Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/readwrite/gexf.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """Read and write graphs in GEXF format. |
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2 |
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3 GEXF (Graph Exchange XML Format) is a language for describing complex |
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4 network structures, their associated data and dynamics. |
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5 |
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6 This implementation does not support mixed graphs (directed and |
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7 undirected edges together). |
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8 |
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9 Format |
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10 ------ |
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11 GEXF is an XML format. See https://gephi.org/gexf/format/schema.html for the |
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12 specification and https://gephi.org/gexf/format/basic.html for examples. |
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13 """ |
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14 import itertools |
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15 import time |
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16 |
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17 import networkx as nx |
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18 from networkx.utils import open_file |
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19 |
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20 from xml.etree.ElementTree import ( |
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21 Element, |
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22 ElementTree, |
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23 SubElement, |
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24 tostring, |
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25 register_namespace, |
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26 ) |
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27 |
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28 __all__ = ["write_gexf", "read_gexf", "relabel_gexf_graph", "generate_gexf"] |
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29 |
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30 |
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31 @open_file(1, mode="wb") |
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32 def write_gexf(G, path, encoding="utf-8", prettyprint=True, version="1.2draft"): |
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33 """Write G in GEXF format to path. |
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34 |
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35 "GEXF (Graph Exchange XML Format) is a language for describing |
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36 complex networks structures, their associated data and dynamics" [1]_. |
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37 |
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38 Node attributes are checked according to the version of the GEXF |
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39 schemas used for parameters which are not user defined, |
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40 e.g. visualization 'viz' [2]_. See example for usage. |
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41 |
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42 Parameters |
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43 ---------- |
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44 G : graph |
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45 A NetworkX graph |
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46 path : file or string |
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47 File or file name to write. |
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48 File names ending in .gz or .bz2 will be compressed. |
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49 encoding : string (optional, default: 'utf-8') |
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50 Encoding for text data. |
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51 prettyprint : bool (optional, default: True) |
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52 If True use line breaks and indenting in output XML. |
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53 |
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54 Examples |
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55 -------- |
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56 >>> G = nx.path_graph(4) |
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57 >>> nx.write_gexf(G, "test.gexf") |
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58 |
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59 # visualization data |
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60 >>> G.nodes[0]["viz"] = {"size": 54} |
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61 >>> G.nodes[0]["viz"]["position"] = {"x": 0, "y": 1} |
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62 >>> G.nodes[0]["viz"]["color"] = {"r": 0, "g": 0, "b": 256} |
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63 |
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64 |
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65 Notes |
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66 ----- |
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67 This implementation does not support mixed graphs (directed and undirected |
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68 edges together). |
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69 |
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70 The node id attribute is set to be the string of the node label. |
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71 If you want to specify an id use set it as node data, e.g. |
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72 node['a']['id']=1 to set the id of node 'a' to 1. |
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73 |
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74 References |
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75 ---------- |
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76 .. [1] GEXF File Format, https://gephi.org/gexf/format/ |
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77 .. [2] GEXF viz schema 1.1, https://gephi.org/gexf/1.1draft/viz |
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78 """ |
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79 writer = GEXFWriter(encoding=encoding, prettyprint=prettyprint, version=version) |
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80 writer.add_graph(G) |
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81 writer.write(path) |
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82 |
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83 |
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84 def generate_gexf(G, encoding="utf-8", prettyprint=True, version="1.2draft"): |
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85 """Generate lines of GEXF format representation of G. |
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86 |
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87 "GEXF (Graph Exchange XML Format) is a language for describing |
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88 complex networks structures, their associated data and dynamics" [1]_. |
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89 |
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90 Parameters |
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91 ---------- |
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92 G : graph |
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93 A NetworkX graph |
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94 encoding : string (optional, default: 'utf-8') |
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95 Encoding for text data. |
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96 prettyprint : bool (optional, default: True) |
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97 If True use line breaks and indenting in output XML. |
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98 version : string (default: 1.2draft) |
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99 Version of GEFX File Format (see https://gephi.org/gexf/format/schema.html) |
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100 Supported values: "1.1draft", "1.2draft" |
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101 |
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102 |
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103 Examples |
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104 -------- |
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105 >>> G = nx.path_graph(4) |
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106 >>> linefeed = chr(10) # linefeed=\n |
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107 >>> s = linefeed.join(nx.generate_gexf(G)) # doctest: +SKIP |
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108 >>> for line in nx.generate_gexf(G): # doctest: +SKIP |
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109 ... print(line) |
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110 |
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111 Notes |
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112 ----- |
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113 This implementation does not support mixed graphs (directed and undirected |
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114 edges together). |
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115 |
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116 The node id attribute is set to be the string of the node label. |
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117 If you want to specify an id use set it as node data, e.g. |
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118 node['a']['id']=1 to set the id of node 'a' to 1. |
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119 |
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120 References |
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121 ---------- |
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122 .. [1] GEXF File Format, https://gephi.org/gexf/format/ |
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123 """ |
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124 writer = GEXFWriter(encoding=encoding, prettyprint=prettyprint, version=version) |
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125 writer.add_graph(G) |
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126 yield from str(writer).splitlines() |
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127 |
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128 |
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129 @open_file(0, mode="rb") |
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130 def read_gexf(path, node_type=None, relabel=False, version="1.2draft"): |
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131 """Read graph in GEXF format from path. |
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132 |
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133 "GEXF (Graph Exchange XML Format) is a language for describing |
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134 complex networks structures, their associated data and dynamics" [1]_. |
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135 |
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136 Parameters |
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137 ---------- |
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138 path : file or string |
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139 File or file name to read. |
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140 File names ending in .gz or .bz2 will be decompressed. |
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141 node_type: Python type (default: None) |
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142 Convert node ids to this type if not None. |
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143 relabel : bool (default: False) |
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144 If True relabel the nodes to use the GEXF node "label" attribute |
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145 instead of the node "id" attribute as the NetworkX node label. |
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146 version : string (default: 1.2draft) |
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147 Version of GEFX File Format (see https://gephi.org/gexf/format/schema.html) |
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148 Supported values: "1.1draft", "1.2draft" |
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149 |
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150 Returns |
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151 ------- |
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152 graph: NetworkX graph |
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153 If no parallel edges are found a Graph or DiGraph is returned. |
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154 Otherwise a MultiGraph or MultiDiGraph is returned. |
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155 |
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156 Notes |
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157 ----- |
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158 This implementation does not support mixed graphs (directed and undirected |
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159 edges together). |
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160 |
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161 References |
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162 ---------- |
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163 .. [1] GEXF File Format, https://gephi.org/gexf/format/ |
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164 """ |
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165 reader = GEXFReader(node_type=node_type, version=version) |
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166 if relabel: |
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167 G = relabel_gexf_graph(reader(path)) |
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168 else: |
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169 G = reader(path) |
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170 return G |
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171 |
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172 |
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173 class GEXF: |
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174 versions = {} |
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175 d = { |
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176 "NS_GEXF": "http://www.gexf.net/1.1draft", |
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177 "NS_VIZ": "http://www.gexf.net/1.1draft/viz", |
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178 "NS_XSI": "http://www.w3.org/2001/XMLSchema-instance", |
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179 "SCHEMALOCATION": " ".join( |
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180 ["http://www.gexf.net/1.1draft", "http://www.gexf.net/1.1draft/gexf.xsd"] |
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181 ), |
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182 "VERSION": "1.1", |
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183 } |
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184 versions["1.1draft"] = d |
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185 d = { |
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186 "NS_GEXF": "http://www.gexf.net/1.2draft", |
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187 "NS_VIZ": "http://www.gexf.net/1.2draft/viz", |
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188 "NS_XSI": "http://www.w3.org/2001/XMLSchema-instance", |
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189 "SCHEMALOCATION": " ".join( |
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190 ["http://www.gexf.net/1.2draft", "http://www.gexf.net/1.2draft/gexf.xsd"] |
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191 ), |
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192 "VERSION": "1.2", |
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193 } |
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194 versions["1.2draft"] = d |
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195 |
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196 types = [ |
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197 (int, "integer"), |
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198 (float, "float"), |
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199 (float, "double"), |
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200 (bool, "boolean"), |
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201 (list, "string"), |
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202 (dict, "string"), |
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203 (int, "long"), |
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204 (str, "liststring"), |
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205 (str, "anyURI"), |
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206 (str, "string"), |
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207 ] |
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208 |
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209 # These additions to types allow writing numpy types |
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210 try: |
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211 import numpy as np |
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212 except ImportError: |
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213 pass |
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214 else: |
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215 # prepend so that python types are created upon read (last entry wins) |
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216 types = [ |
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217 (np.float64, "float"), |
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218 (np.float32, "float"), |
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219 (np.float16, "float"), |
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220 (np.float_, "float"), |
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221 (np.int_, "int"), |
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222 (np.int8, "int"), |
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223 (np.int16, "int"), |
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224 (np.int32, "int"), |
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225 (np.int64, "int"), |
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226 (np.uint8, "int"), |
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227 (np.uint16, "int"), |
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228 (np.uint32, "int"), |
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229 (np.uint64, "int"), |
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230 (np.int_, "int"), |
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231 (np.intc, "int"), |
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232 (np.intp, "int"), |
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233 ] + types |
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234 |
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235 xml_type = dict(types) |
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236 python_type = dict(reversed(a) for a in types) |
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237 |
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238 # http://www.w3.org/TR/xmlschema-2/#boolean |
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239 convert_bool = { |
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240 "true": True, |
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241 "false": False, |
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242 "True": True, |
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243 "False": False, |
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244 "0": False, |
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245 0: False, |
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246 "1": True, |
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247 1: True, |
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248 } |
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249 |
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250 def set_version(self, version): |
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251 d = self.versions.get(version) |
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252 if d is None: |
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253 raise nx.NetworkXError(f"Unknown GEXF version {version}.") |
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254 self.NS_GEXF = d["NS_GEXF"] |
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255 self.NS_VIZ = d["NS_VIZ"] |
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256 self.NS_XSI = d["NS_XSI"] |
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257 self.SCHEMALOCATION = d["SCHEMALOCATION"] |
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258 self.VERSION = d["VERSION"] |
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259 self.version = version |
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260 |
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261 |
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262 class GEXFWriter(GEXF): |
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263 # class for writing GEXF format files |
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264 # use write_gexf() function |
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265 def __init__( |
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266 self, graph=None, encoding="utf-8", prettyprint=True, version="1.2draft" |
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267 ): |
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268 self.prettyprint = prettyprint |
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269 self.encoding = encoding |
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270 self.set_version(version) |
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271 self.xml = Element( |
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272 "gexf", |
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273 { |
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274 "xmlns": self.NS_GEXF, |
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275 "xmlns:xsi": self.NS_XSI, |
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276 "xsi:schemaLocation": self.SCHEMALOCATION, |
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277 "version": self.VERSION, |
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278 }, |
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279 ) |
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280 |
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281 # Make meta element a non-graph element |
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282 # Also add lastmodifieddate as attribute, not tag |
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283 meta_element = Element("meta") |
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284 subelement_text = f"NetworkX {nx.__version__}" |
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285 SubElement(meta_element, "creator").text = subelement_text |
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286 meta_element.set("lastmodifieddate", time.strftime("%Y-%m-%d")) |
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287 self.xml.append(meta_element) |
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288 |
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289 register_namespace("viz", self.NS_VIZ) |
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290 |
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291 # counters for edge and attribute identifiers |
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292 self.edge_id = itertools.count() |
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293 self.attr_id = itertools.count() |
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294 self.all_edge_ids = set() |
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295 # default attributes are stored in dictionaries |
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296 self.attr = {} |
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297 self.attr["node"] = {} |
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298 self.attr["edge"] = {} |
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299 self.attr["node"]["dynamic"] = {} |
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300 self.attr["node"]["static"] = {} |
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301 self.attr["edge"]["dynamic"] = {} |
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302 self.attr["edge"]["static"] = {} |
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303 |
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304 if graph is not None: |
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305 self.add_graph(graph) |
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306 |
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307 def __str__(self): |
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308 if self.prettyprint: |
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309 self.indent(self.xml) |
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310 s = tostring(self.xml).decode(self.encoding) |
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311 return s |
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312 |
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313 def add_graph(self, G): |
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314 # first pass through G collecting edge ids |
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315 for u, v, dd in G.edges(data=True): |
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316 eid = dd.get("id") |
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317 if eid is not None: |
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318 self.all_edge_ids.add(str(eid)) |
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319 # set graph attributes |
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320 if G.graph.get("mode") == "dynamic": |
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321 mode = "dynamic" |
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322 else: |
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323 mode = "static" |
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324 # Add a graph element to the XML |
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325 if G.is_directed(): |
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326 default = "directed" |
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327 else: |
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328 default = "undirected" |
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329 name = G.graph.get("name", "") |
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330 graph_element = Element("graph", defaultedgetype=default, mode=mode, name=name) |
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331 self.graph_element = graph_element |
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332 self.add_nodes(G, graph_element) |
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333 self.add_edges(G, graph_element) |
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334 self.xml.append(graph_element) |
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335 |
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336 def add_nodes(self, G, graph_element): |
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337 nodes_element = Element("nodes") |
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338 for node, data in G.nodes(data=True): |
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shellac
parents:
diff
changeset
|
339 node_data = data.copy() |
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shellac
parents:
diff
changeset
|
340 node_id = str(node_data.pop("id", node)) |
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shellac
parents:
diff
changeset
|
341 kw = {"id": node_id} |
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shellac
parents:
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changeset
|
342 label = str(node_data.pop("label", node)) |
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shellac
parents:
diff
changeset
|
343 kw["label"] = label |
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shellac
parents:
diff
changeset
|
344 try: |
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shellac
parents:
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changeset
|
345 pid = node_data.pop("pid") |
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shellac
parents:
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changeset
|
346 kw["pid"] = str(pid) |
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shellac
parents:
diff
changeset
|
347 except KeyError: |
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shellac
parents:
diff
changeset
|
348 pass |
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shellac
parents:
diff
changeset
|
349 try: |
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shellac
parents:
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changeset
|
350 start = node_data.pop("start") |
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shellac
parents:
diff
changeset
|
351 kw["start"] = str(start) |
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shellac
parents:
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changeset
|
352 self.alter_graph_mode_timeformat(start) |
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shellac
parents:
diff
changeset
|
353 except KeyError: |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
354 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
355 try: |
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shellac
parents:
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changeset
|
356 end = node_data.pop("end") |
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shellac
parents:
diff
changeset
|
357 kw["end"] = str(end) |
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shellac
parents:
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changeset
|
358 self.alter_graph_mode_timeformat(end) |
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shellac
parents:
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changeset
|
359 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
360 pass |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
361 # add node element with attributes |
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shellac
parents:
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changeset
|
362 node_element = Element("node", **kw) |
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shellac
parents:
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changeset
|
363 # add node element and attr subelements |
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shellac
parents:
diff
changeset
|
364 default = G.graph.get("node_default", {}) |
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shellac
parents:
diff
changeset
|
365 node_data = self.add_parents(node_element, node_data) |
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shellac
parents:
diff
changeset
|
366 if self.VERSION == "1.1": |
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shellac
parents:
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changeset
|
367 node_data = self.add_slices(node_element, node_data) |
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shellac
parents:
diff
changeset
|
368 else: |
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shellac
parents:
diff
changeset
|
369 node_data = self.add_spells(node_element, node_data) |
4f3585e2f14b
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shellac
parents:
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changeset
|
370 node_data = self.add_viz(node_element, node_data) |
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shellac
parents:
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changeset
|
371 node_data = self.add_attributes("node", node_element, node_data, default) |
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shellac
parents:
diff
changeset
|
372 nodes_element.append(node_element) |
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shellac
parents:
diff
changeset
|
373 graph_element.append(nodes_element) |
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shellac
parents:
diff
changeset
|
374 |
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shellac
parents:
diff
changeset
|
375 def add_edges(self, G, graph_element): |
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shellac
parents:
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changeset
|
376 def edge_key_data(G): |
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shellac
parents:
diff
changeset
|
377 # helper function to unify multigraph and graph edge iterator |
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shellac
parents:
diff
changeset
|
378 if G.is_multigraph(): |
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shellac
parents:
diff
changeset
|
379 for u, v, key, data in G.edges(data=True, keys=True): |
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shellac
parents:
diff
changeset
|
380 edge_data = data.copy() |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
381 edge_data.update(key=key) |
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shellac
parents:
diff
changeset
|
382 edge_id = edge_data.pop("id", None) |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
383 if edge_id is None: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
384 edge_id = next(self.edge_id) |
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shellac
parents:
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changeset
|
385 while str(edge_id) in self.all_edge_ids: |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
386 edge_id = next(self.edge_id) |
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shellac
parents:
diff
changeset
|
387 self.all_edge_ids.add(str(edge_id)) |
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shellac
parents:
diff
changeset
|
388 yield u, v, edge_id, edge_data |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
389 else: |
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shellac
parents:
diff
changeset
|
390 for u, v, data in G.edges(data=True): |
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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
391 edge_data = data.copy() |
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shellac
parents:
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changeset
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392 edge_id = edge_data.pop("id", None) |
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shellac
parents:
diff
changeset
|
393 if edge_id is None: |
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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
394 edge_id = next(self.edge_id) |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
395 while str(edge_id) in self.all_edge_ids: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
396 edge_id = next(self.edge_id) |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
397 self.all_edge_ids.add(str(edge_id)) |
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shellac
parents:
diff
changeset
|
398 yield u, v, edge_id, edge_data |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
399 |
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shellac
parents:
diff
changeset
|
400 edges_element = Element("edges") |
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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
401 for u, v, key, edge_data in edge_key_data(G): |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
402 kw = {"id": str(key)} |
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shellac
parents:
diff
changeset
|
403 try: |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
404 edge_label = edge_data.pop("label") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
405 kw["label"] = str(edge_label) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
406 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
407 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
408 try: |
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shellac
parents:
diff
changeset
|
409 edge_weight = edge_data.pop("weight") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
410 kw["weight"] = str(edge_weight) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
411 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
412 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
413 try: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
414 edge_type = edge_data.pop("type") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
415 kw["type"] = str(edge_type) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
416 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
417 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
418 try: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
419 start = edge_data.pop("start") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
420 kw["start"] = str(start) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
421 self.alter_graph_mode_timeformat(start) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
422 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
423 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
424 try: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
425 end = edge_data.pop("end") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
426 kw["end"] = str(end) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
427 self.alter_graph_mode_timeformat(end) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
428 except KeyError: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
429 pass |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
430 source_id = str(G.nodes[u].get("id", u)) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
431 target_id = str(G.nodes[v].get("id", v)) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
432 edge_element = Element("edge", source=source_id, target=target_id, **kw) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
433 default = G.graph.get("edge_default", {}) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
434 if self.VERSION == "1.1": |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
435 edge_data = self.add_slices(edge_element, edge_data) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
436 else: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
437 edge_data = self.add_spells(edge_element, edge_data) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
438 edge_data = self.add_viz(edge_element, edge_data) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
439 edge_data = self.add_attributes("edge", edge_element, edge_data, default) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
440 edges_element.append(edge_element) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
441 graph_element.append(edges_element) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
442 |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
443 def add_attributes(self, node_or_edge, xml_obj, data, default): |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
444 # Add attrvalues to node or edge |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
445 attvalues = Element("attvalues") |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
446 if len(data) == 0: |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
447 return data |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
448 mode = "static" |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
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449 for k, v in data.items(): |
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450 # rename generic multigraph key to avoid any name conflict |
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451 if k == "key": |
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452 k = "networkx_key" |
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453 val_type = type(v) |
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454 if val_type not in self.xml_type: |
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455 raise TypeError(f"attribute value type is not allowed: {val_type}") |
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456 if isinstance(v, list): |
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457 # dynamic data |
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458 for val, start, end in v: |
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459 val_type = type(val) |
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460 if start is not None or end is not None: |
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461 mode = "dynamic" |
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462 self.alter_graph_mode_timeformat(start) |
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463 self.alter_graph_mode_timeformat(end) |
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464 break |
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465 attr_id = self.get_attr_id( |
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466 str(k), self.xml_type[val_type], node_or_edge, default, mode |
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467 ) |
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468 for val, start, end in v: |
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469 e = Element("attvalue") |
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470 e.attrib["for"] = attr_id |
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471 e.attrib["value"] = str(val) |
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472 # Handle nan, inf, -inf differently |
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473 if val_type == float: |
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474 if e.attrib["value"] == "inf": |
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475 e.attrib["value"] = "INF" |
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476 elif e.attrib["value"] == "nan": |
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477 e.attrib["value"] = "NaN" |
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478 elif e.attrib["value"] == "-inf": |
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479 e.attrib["value"] = "-INF" |
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480 if start is not None: |
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481 e.attrib["start"] = str(start) |
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482 if end is not None: |
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483 e.attrib["end"] = str(end) |
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484 attvalues.append(e) |
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485 else: |
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486 # static data |
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487 mode = "static" |
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488 attr_id = self.get_attr_id( |
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489 str(k), self.xml_type[val_type], node_or_edge, default, mode |
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490 ) |
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491 e = Element("attvalue") |
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492 e.attrib["for"] = attr_id |
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493 if isinstance(v, bool): |
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494 e.attrib["value"] = str(v).lower() |
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495 else: |
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496 e.attrib["value"] = str(v) |
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497 # Handle float nan, inf, -inf differently |
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498 if val_type == float: |
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499 if e.attrib["value"] == "inf": |
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500 e.attrib["value"] = "INF" |
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501 elif e.attrib["value"] == "nan": |
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502 e.attrib["value"] = "NaN" |
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503 elif e.attrib["value"] == "-inf": |
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504 e.attrib["value"] = "-INF" |
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505 attvalues.append(e) |
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506 xml_obj.append(attvalues) |
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507 return data |
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508 |
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509 def get_attr_id(self, title, attr_type, edge_or_node, default, mode): |
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510 # find the id of the attribute or generate a new id |
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511 try: |
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512 return self.attr[edge_or_node][mode][title] |
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513 except KeyError: |
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514 # generate new id |
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515 new_id = str(next(self.attr_id)) |
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516 self.attr[edge_or_node][mode][title] = new_id |
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517 attr_kwargs = {"id": new_id, "title": title, "type": attr_type} |
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518 attribute = Element("attribute", **attr_kwargs) |
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519 # add subelement for data default value if present |
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520 default_title = default.get(title) |
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521 if default_title is not None: |
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522 default_element = Element("default") |
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523 default_element.text = str(default_title) |
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524 attribute.append(default_element) |
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525 # new insert it into the XML |
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526 attributes_element = None |
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527 for a in self.graph_element.findall("attributes"): |
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528 # find existing attributes element by class and mode |
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529 a_class = a.get("class") |
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530 a_mode = a.get("mode", "static") |
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531 if a_class == edge_or_node and a_mode == mode: |
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532 attributes_element = a |
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533 if attributes_element is None: |
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534 # create new attributes element |
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535 attr_kwargs = {"mode": mode, "class": edge_or_node} |
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536 attributes_element = Element("attributes", **attr_kwargs) |
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537 self.graph_element.insert(0, attributes_element) |
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538 attributes_element.append(attribute) |
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539 return new_id |
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540 |
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541 def add_viz(self, element, node_data): |
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542 viz = node_data.pop("viz", False) |
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543 if viz: |
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544 color = viz.get("color") |
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545 if color is not None: |
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546 if self.VERSION == "1.1": |
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547 e = Element( |
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548 f"{{{self.NS_VIZ}}}color", |
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549 r=str(color.get("r")), |
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550 g=str(color.get("g")), |
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551 b=str(color.get("b")), |
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552 ) |
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553 else: |
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554 e = Element( |
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555 f"{{{self.NS_VIZ}}}color", |
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556 r=str(color.get("r")), |
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557 g=str(color.get("g")), |
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558 b=str(color.get("b")), |
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559 a=str(color.get("a")), |
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560 ) |
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561 element.append(e) |
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562 |
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563 size = viz.get("size") |
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564 if size is not None: |
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565 e = Element(f"{{{self.NS_VIZ}}}size", value=str(size)) |
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566 element.append(e) |
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parents:
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567 |
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568 thickness = viz.get("thickness") |
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569 if thickness is not None: |
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570 e = Element(f"{{{self.NS_VIZ}}}thickness", value=str(thickness)) |
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571 element.append(e) |
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572 |
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573 shape = viz.get("shape") |
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574 if shape is not None: |
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575 if shape.startswith("http"): |
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parents:
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576 e = Element( |
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577 f"{{{self.NS_VIZ}}}shape", value="image", uri=str(shape) |
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|
578 ) |
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579 else: |
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580 e = Element(f"{{{self.NS_VIZ}}}shape", value=str(shape)) |
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581 element.append(e) |
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582 |
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583 position = viz.get("position") |
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584 if position is not None: |
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585 e = Element( |
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586 f"{{{self.NS_VIZ}}}position", |
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587 x=str(position.get("x")), |
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588 y=str(position.get("y")), |
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589 z=str(position.get("z")), |
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590 ) |
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591 element.append(e) |
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592 return node_data |
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593 |
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594 def add_parents(self, node_element, node_data): |
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595 parents = node_data.pop("parents", False) |
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596 if parents: |
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597 parents_element = Element("parents") |
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598 for p in parents: |
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599 e = Element("parent") |
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600 e.attrib["for"] = str(p) |
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601 parents_element.append(e) |
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602 node_element.append(parents_element) |
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603 return node_data |
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604 |
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605 def add_slices(self, node_or_edge_element, node_or_edge_data): |
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606 slices = node_or_edge_data.pop("slices", False) |
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607 if slices: |
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608 slices_element = Element("slices") |
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609 for start, end in slices: |
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610 e = Element("slice", start=str(start), end=str(end)) |
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611 slices_element.append(e) |
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612 node_or_edge_element.append(slices_element) |
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613 return node_or_edge_data |
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614 |
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615 def add_spells(self, node_or_edge_element, node_or_edge_data): |
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616 spells = node_or_edge_data.pop("spells", False) |
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617 if spells: |
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618 spells_element = Element("spells") |
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619 for start, end in spells: |
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620 e = Element("spell") |
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621 if start is not None: |
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622 e.attrib["start"] = str(start) |
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623 self.alter_graph_mode_timeformat(start) |
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624 if end is not None: |
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625 e.attrib["end"] = str(end) |
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626 self.alter_graph_mode_timeformat(end) |
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627 spells_element.append(e) |
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628 node_or_edge_element.append(spells_element) |
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629 return node_or_edge_data |
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shellac
parents:
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|
630 |
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|
631 def alter_graph_mode_timeformat(self, start_or_end): |
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shellac
parents:
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|
632 # If 'start' or 'end' appears, alter Graph mode to dynamic and |
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parents:
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|
633 # set timeformat |
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634 if self.graph_element.get("mode") == "static": |
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635 if start_or_end is not None: |
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636 if isinstance(start_or_end, str): |
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637 timeformat = "date" |
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parents:
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|
638 elif isinstance(start_or_end, float): |
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639 timeformat = "double" |
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640 elif isinstance(start_or_end, int): |
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641 timeformat = "long" |
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642 else: |
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643 raise nx.NetworkXError( |
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parents:
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644 "timeformat should be of the type int, float or str" |
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|
645 ) |
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646 self.graph_element.set("timeformat", timeformat) |
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647 self.graph_element.set("mode", "dynamic") |
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648 |
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parents:
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649 def write(self, fh): |
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parents:
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650 # Serialize graph G in GEXF to the open fh |
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651 if self.prettyprint: |
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652 self.indent(self.xml) |
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653 document = ElementTree(self.xml) |
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654 document.write(fh, encoding=self.encoding, xml_declaration=True) |
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|
655 |
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656 def indent(self, elem, level=0): |
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657 # in-place prettyprint formatter |
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658 i = "\n" + " " * level |
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659 if len(elem): |
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660 if not elem.text or not elem.text.strip(): |
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661 elem.text = i + " " |
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662 if not elem.tail or not elem.tail.strip(): |
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663 elem.tail = i |
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664 for elem in elem: |
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665 self.indent(elem, level + 1) |
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666 if not elem.tail or not elem.tail.strip(): |
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667 elem.tail = i |
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668 else: |
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parents:
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669 if level and (not elem.tail or not elem.tail.strip()): |
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parents:
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670 elem.tail = i |
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parents:
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|
671 |
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parents:
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672 |
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673 class GEXFReader(GEXF): |
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674 # Class to read GEXF format files |
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675 # use read_gexf() function |
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676 def __init__(self, node_type=None, version="1.2draft"): |
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677 self.node_type = node_type |
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678 # assume simple graph and test for multigraph on read |
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679 self.simple_graph = True |
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680 self.set_version(version) |
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681 |
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682 def __call__(self, stream): |
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683 self.xml = ElementTree(file=stream) |
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684 g = self.xml.find(f"{{{self.NS_GEXF}}}graph") |
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685 if g is not None: |
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686 return self.make_graph(g) |
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687 # try all the versions |
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688 for version in self.versions: |
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689 self.set_version(version) |
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690 g = self.xml.find(f"{{{self.NS_GEXF}}}graph") |
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691 if g is not None: |
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692 return self.make_graph(g) |
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693 raise nx.NetworkXError("No <graph> element in GEXF file.") |
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694 |
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695 def make_graph(self, graph_xml): |
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696 # start with empty DiGraph or MultiDiGraph |
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697 edgedefault = graph_xml.get("defaultedgetype", None) |
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698 if edgedefault == "directed": |
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699 G = nx.MultiDiGraph() |
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700 else: |
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701 G = nx.MultiGraph() |
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702 |
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703 # graph attributes |
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704 graph_name = graph_xml.get("name", "") |
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705 if graph_name != "": |
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706 G.graph["name"] = graph_name |
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707 graph_start = graph_xml.get("start") |
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708 if graph_start is not None: |
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709 G.graph["start"] = graph_start |
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710 graph_end = graph_xml.get("end") |
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711 if graph_end is not None: |
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712 G.graph["end"] = graph_end |
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713 graph_mode = graph_xml.get("mode", "") |
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714 if graph_mode == "dynamic": |
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715 G.graph["mode"] = "dynamic" |
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716 else: |
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717 G.graph["mode"] = "static" |
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718 |
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719 # timeformat |
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720 self.timeformat = graph_xml.get("timeformat") |
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721 if self.timeformat == "date": |
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722 self.timeformat = "string" |
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723 |
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724 # node and edge attributes |
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725 attributes_elements = graph_xml.findall(f"{{{self.NS_GEXF}}}attributes") |
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726 # dictionaries to hold attributes and attribute defaults |
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727 node_attr = {} |
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728 node_default = {} |
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729 edge_attr = {} |
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730 edge_default = {} |
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731 for a in attributes_elements: |
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732 attr_class = a.get("class") |
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733 if attr_class == "node": |
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734 na, nd = self.find_gexf_attributes(a) |
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735 node_attr.update(na) |
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736 node_default.update(nd) |
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737 G.graph["node_default"] = node_default |
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738 elif attr_class == "edge": |
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739 ea, ed = self.find_gexf_attributes(a) |
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740 edge_attr.update(ea) |
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741 edge_default.update(ed) |
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742 G.graph["edge_default"] = edge_default |
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743 else: |
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744 raise # unknown attribute class |
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|
745 |
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746 # Hack to handle Gephi0.7beta bug |
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747 # add weight attribute |
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748 ea = {"weight": {"type": "double", "mode": "static", "title": "weight"}} |
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749 ed = {} |
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750 edge_attr.update(ea) |
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751 edge_default.update(ed) |
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752 G.graph["edge_default"] = edge_default |
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|
753 |
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754 # add nodes |
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755 nodes_element = graph_xml.find(f"{{{self.NS_GEXF}}}nodes") |
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756 if nodes_element is not None: |
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757 for node_xml in nodes_element.findall(f"{{{self.NS_GEXF}}}node"): |
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758 self.add_node(G, node_xml, node_attr) |
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759 |
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760 # add edges |
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761 edges_element = graph_xml.find(f"{{{self.NS_GEXF}}}edges") |
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762 if edges_element is not None: |
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763 for edge_xml in edges_element.findall(f"{{{self.NS_GEXF}}}edge"): |
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764 self.add_edge(G, edge_xml, edge_attr) |
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765 |
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766 # switch to Graph or DiGraph if no parallel edges were found. |
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767 if self.simple_graph: |
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768 if G.is_directed(): |
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769 G = nx.DiGraph(G) |
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770 else: |
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771 G = nx.Graph(G) |
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772 return G |
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773 |
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774 def add_node(self, G, node_xml, node_attr, node_pid=None): |
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775 # add a single node with attributes to the graph |
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776 |
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777 # get attributes and subattributues for node |
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778 data = self.decode_attr_elements(node_attr, node_xml) |
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779 data = self.add_parents(data, node_xml) # add any parents |
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780 if self.VERSION == "1.1": |
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781 data = self.add_slices(data, node_xml) # add slices |
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782 else: |
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783 data = self.add_spells(data, node_xml) # add spells |
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parents:
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|
784 data = self.add_viz(data, node_xml) # add viz |
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shellac
parents:
diff
changeset
|
785 data = self.add_start_end(data, node_xml) # add start/end |
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shellac
parents:
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changeset
|
786 |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
787 # find the node id and cast it to the appropriate type |
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shellac
parents:
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|
788 node_id = node_xml.get("id") |
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parents:
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changeset
|
789 if self.node_type is not None: |
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shellac
parents:
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changeset
|
790 node_id = self.node_type(node_id) |
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shellac
parents:
diff
changeset
|
791 |
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shellac
parents:
diff
changeset
|
792 # every node should have a label |
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shellac
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|
793 node_label = node_xml.get("label") |
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shellac
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|
794 data["label"] = node_label |
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parents:
diff
changeset
|
795 |
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shellac
parents:
diff
changeset
|
796 # parent node id |
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shellac
parents:
diff
changeset
|
797 node_pid = node_xml.get("pid", node_pid) |
4f3585e2f14b
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shellac
parents:
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changeset
|
798 if node_pid is not None: |
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shellac
parents:
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|
799 data["pid"] = node_pid |
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shellac
parents:
diff
changeset
|
800 |
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shellac
parents:
diff
changeset
|
801 # check for subnodes, recursive |
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shellac
parents:
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|
802 subnodes = node_xml.find(f"{{{self.NS_GEXF}}}nodes") |
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shellac
parents:
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changeset
|
803 if subnodes is not None: |
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shellac
parents:
diff
changeset
|
804 for node_xml in subnodes.findall(f"{{{self.NS_GEXF}}}node"): |
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shellac
parents:
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changeset
|
805 self.add_node(G, node_xml, node_attr, node_pid=node_id) |
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parents:
diff
changeset
|
806 |
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shellac
parents:
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changeset
|
807 G.add_node(node_id, **data) |
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shellac
parents:
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changeset
|
808 |
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shellac
parents:
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changeset
|
809 def add_start_end(self, data, xml): |
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shellac
parents:
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changeset
|
810 # start and end times |
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parents:
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|
811 ttype = self.timeformat |
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parents:
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|
812 node_start = xml.get("start") |
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shellac
parents:
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changeset
|
813 if node_start is not None: |
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shellac
parents:
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|
814 data["start"] = self.python_type[ttype](node_start) |
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shellac
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|
815 node_end = xml.get("end") |
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shellac
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changeset
|
816 if node_end is not None: |
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shellac
parents:
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|
817 data["end"] = self.python_type[ttype](node_end) |
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shellac
parents:
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changeset
|
818 return data |
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parents:
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changeset
|
819 |
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shellac
parents:
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changeset
|
820 def add_viz(self, data, node_xml): |
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shellac
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|
821 # add viz element for node |
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|
822 viz = {} |
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shellac
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|
823 color = node_xml.find(f"{{{self.NS_VIZ}}}color") |
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|
824 if color is not None: |
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shellac
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|
825 if self.VERSION == "1.1": |
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parents:
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|
826 viz["color"] = { |
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|
827 "r": int(color.get("r")), |
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|
828 "g": int(color.get("g")), |
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|
829 "b": int(color.get("b")), |
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shellac
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|
830 } |
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shellac
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|
831 else: |
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shellac
parents:
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changeset
|
832 viz["color"] = { |
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|
833 "r": int(color.get("r")), |
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shellac
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|
834 "g": int(color.get("g")), |
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|
835 "b": int(color.get("b")), |
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shellac
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|
836 "a": float(color.get("a", 1)), |
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shellac
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|
837 } |
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shellac
parents:
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changeset
|
838 |
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shellac
parents:
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changeset
|
839 size = node_xml.find(f"{{{self.NS_VIZ}}}size") |
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shellac
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|
840 if size is not None: |
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shellac
parents:
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changeset
|
841 viz["size"] = float(size.get("value")) |
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shellac
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|
842 |
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shellac
parents:
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changeset
|
843 thickness = node_xml.find(f"{{{self.NS_VIZ}}}thickness") |
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shellac
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|
844 if thickness is not None: |
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shellac
parents:
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changeset
|
845 viz["thickness"] = float(thickness.get("value")) |
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shellac
parents:
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changeset
|
846 |
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shellac
parents:
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changeset
|
847 shape = node_xml.find(f"{{{self.NS_VIZ}}}shape") |
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shellac
parents:
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changeset
|
848 if shape is not None: |
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shellac
parents:
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changeset
|
849 viz["shape"] = shape.get("shape") |
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shellac
parents:
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changeset
|
850 if viz["shape"] == "image": |
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shellac
parents:
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changeset
|
851 viz["shape"] = shape.get("uri") |
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shellac
parents:
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changeset
|
852 |
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shellac
parents:
diff
changeset
|
853 position = node_xml.find(f"{{{self.NS_VIZ}}}position") |
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shellac
parents:
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changeset
|
854 if position is not None: |
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shellac
parents:
diff
changeset
|
855 viz["position"] = { |
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shellac
parents:
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changeset
|
856 "x": float(position.get("x", 0)), |
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shellac
parents:
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changeset
|
857 "y": float(position.get("y", 0)), |
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shellac
parents:
diff
changeset
|
858 "z": float(position.get("z", 0)), |
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shellac
parents:
diff
changeset
|
859 } |
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shellac
parents:
diff
changeset
|
860 |
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shellac
parents:
diff
changeset
|
861 if len(viz) > 0: |
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shellac
parents:
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changeset
|
862 data["viz"] = viz |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
863 return data |
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shellac
parents:
diff
changeset
|
864 |
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shellac
parents:
diff
changeset
|
865 def add_parents(self, data, node_xml): |
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shellac
parents:
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changeset
|
866 parents_element = node_xml.find(f"{{{self.NS_GEXF}}}parents") |
4f3585e2f14b
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shellac
parents:
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changeset
|
867 if parents_element is not None: |
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shellac
parents:
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changeset
|
868 data["parents"] = [] |
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shellac
parents:
diff
changeset
|
869 for p in parents_element.findall(f"{{{self.NS_GEXF}}}parent"): |
4f3585e2f14b
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shellac
parents:
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changeset
|
870 parent = p.get("for") |
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shellac
parents:
diff
changeset
|
871 data["parents"].append(parent) |
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shellac
parents:
diff
changeset
|
872 return data |
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shellac
parents:
diff
changeset
|
873 |
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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
874 def add_slices(self, data, node_or_edge_xml): |
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shellac
parents:
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changeset
|
875 slices_element = node_or_edge_xml.find(f"{{{self.NS_GEXF}}}slices") |
4f3585e2f14b
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shellac
parents:
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changeset
|
876 if slices_element is not None: |
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shellac
parents:
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changeset
|
877 data["slices"] = [] |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
878 for s in slices_element.findall(f"{{{self.NS_GEXF}}}slice"): |
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shellac
parents:
diff
changeset
|
879 start = s.get("start") |
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shellac
parents:
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changeset
|
880 end = s.get("end") |
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shellac
parents:
diff
changeset
|
881 data["slices"].append((start, end)) |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
882 return data |
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shellac
parents:
diff
changeset
|
883 |
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shellac
parents:
diff
changeset
|
884 def add_spells(self, data, node_or_edge_xml): |
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shellac
parents:
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changeset
|
885 spells_element = node_or_edge_xml.find(f"{{{self.NS_GEXF}}}spells") |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
886 if spells_element is not None: |
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shellac
parents:
diff
changeset
|
887 data["spells"] = [] |
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shellac
parents:
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changeset
|
888 ttype = self.timeformat |
4f3585e2f14b
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shellac
parents:
diff
changeset
|
889 for s in spells_element.findall(f"{{{self.NS_GEXF}}}spell"): |
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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
890 start = self.python_type[ttype](s.get("start")) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
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changeset
|
891 end = self.python_type[ttype](s.get("end")) |
4f3585e2f14b
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff
changeset
|
892 data["spells"].append((start, end)) |
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shellac
parents:
diff
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|
893 return data |
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|
894 |
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|
895 def add_edge(self, G, edge_element, edge_attr): |
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|
896 # add an edge to the graph |
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|
897 |
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|
898 # raise error if we find mixed directed and undirected edges |
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|
899 edge_direction = edge_element.get("type") |
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|
900 if G.is_directed() and edge_direction == "undirected": |
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|
901 raise nx.NetworkXError("Undirected edge found in directed graph.") |
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|
902 if (not G.is_directed()) and edge_direction == "directed": |
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|
903 raise nx.NetworkXError("Directed edge found in undirected graph.") |
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|
904 |
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|
905 # Get source and target and recast type if required |
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|
906 source = edge_element.get("source") |
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|
907 target = edge_element.get("target") |
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|
908 if self.node_type is not None: |
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|
909 source = self.node_type(source) |
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|
910 target = self.node_type(target) |
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|
911 |
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|
912 data = self.decode_attr_elements(edge_attr, edge_element) |
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|
913 data = self.add_start_end(data, edge_element) |
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914 |
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|
915 if self.VERSION == "1.1": |
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|
916 data = self.add_slices(data, edge_element) # add slices |
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917 else: |
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|
918 data = self.add_spells(data, edge_element) # add spells |
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|
919 |
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|
920 # GEXF stores edge ids as an attribute |
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|
921 # NetworkX uses them as keys in multigraphs |
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922 # if networkx_key is not specified as an attribute |
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|
923 edge_id = edge_element.get("id") |
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|
924 if edge_id is not None: |
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925 data["id"] = edge_id |
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|
926 |
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|
927 # check if there is a 'multigraph_key' and use that as edge_id |
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|
928 multigraph_key = data.pop("networkx_key", None) |
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|
929 if multigraph_key is not None: |
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|
930 edge_id = multigraph_key |
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|
931 |
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|
932 weight = edge_element.get("weight") |
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|
933 if weight is not None: |
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|
934 data["weight"] = float(weight) |
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|
935 |
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|
936 edge_label = edge_element.get("label") |
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|
937 if edge_label is not None: |
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|
938 data["label"] = edge_label |
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|
939 |
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|
940 if G.has_edge(source, target): |
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|
941 # seen this edge before - this is a multigraph |
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|
942 self.simple_graph = False |
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|
943 G.add_edge(source, target, key=edge_id, **data) |
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|
944 if edge_direction == "mutual": |
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|
945 G.add_edge(target, source, key=edge_id, **data) |
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|
946 |
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parents:
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|
947 def decode_attr_elements(self, gexf_keys, obj_xml): |
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|
948 # Use the key information to decode the attr XML |
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|
949 attr = {} |
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|
950 # look for outer '<attvalues>' element |
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|
951 attr_element = obj_xml.find(f"{{{self.NS_GEXF}}}attvalues") |
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|
952 if attr_element is not None: |
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|
953 # loop over <attvalue> elements |
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|
954 for a in attr_element.findall(f"{{{self.NS_GEXF}}}attvalue"): |
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|
955 key = a.get("for") # for is required |
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|
956 try: # should be in our gexf_keys dictionary |
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|
957 title = gexf_keys[key]["title"] |
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|
958 except KeyError as e: |
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|
959 raise nx.NetworkXError(f"No attribute defined for={key}.") from e |
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|
960 atype = gexf_keys[key]["type"] |
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|
961 value = a.get("value") |
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|
962 if atype == "boolean": |
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|
963 value = self.convert_bool[value] |
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|
964 else: |
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|
965 value = self.python_type[atype](value) |
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|
966 if gexf_keys[key]["mode"] == "dynamic": |
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|
967 # for dynamic graphs use list of three-tuples |
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|
968 # [(value1,start1,end1), (value2,start2,end2), etc] |
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|
969 ttype = self.timeformat |
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|
970 start = self.python_type[ttype](a.get("start")) |
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|
971 end = self.python_type[ttype](a.get("end")) |
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|
972 if title in attr: |
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|
973 attr[title].append((value, start, end)) |
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|
974 else: |
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|
975 attr[title] = [(value, start, end)] |
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976 else: |
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|
977 # for static graphs just assign the value |
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978 attr[title] = value |
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|
979 return attr |
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|
980 |
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|
981 def find_gexf_attributes(self, attributes_element): |
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982 # Extract all the attributes and defaults |
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|
983 attrs = {} |
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|
984 defaults = {} |
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|
985 mode = attributes_element.get("mode") |
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|
986 for k in attributes_element.findall(f"{{{self.NS_GEXF}}}attribute"): |
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|
987 attr_id = k.get("id") |
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988 title = k.get("title") |
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|
989 atype = k.get("type") |
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|
990 attrs[attr_id] = {"title": title, "type": atype, "mode": mode} |
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shellac
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|
991 # check for the 'default' subelement of key element and add |
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|
992 default = k.find(f"{{{self.NS_GEXF}}}default") |
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|
993 if default is not None: |
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|
994 if atype == "boolean": |
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|
995 value = self.convert_bool[default.text] |
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|
996 else: |
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997 value = self.python_type[atype](default.text) |
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|
998 defaults[title] = value |
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|
999 return attrs, defaults |
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parents:
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|
1000 |
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|
1001 |
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diff
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|
1002 def relabel_gexf_graph(G): |
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1003 """Relabel graph using "label" node keyword for node label. |
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1004 |
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1005 Parameters |
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1006 ---------- |
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1007 G : graph |
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1008 A NetworkX graph read from GEXF data |
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1009 |
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1010 Returns |
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1011 ------- |
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1012 H : graph |
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1013 A NetworkX graph with relabed nodes |
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1014 |
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1015 Raises |
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1016 ------ |
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1017 NetworkXError |
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1018 If node labels are missing or not unique while relabel=True. |
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1019 |
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1020 Notes |
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1021 ----- |
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1022 This function relabels the nodes in a NetworkX graph with the |
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1023 "label" attribute. It also handles relabeling the specific GEXF |
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1024 node attributes "parents", and "pid". |
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1025 """ |
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1026 # build mapping of node labels, do some error checking |
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1027 try: |
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1028 mapping = [(u, G.nodes[u]["label"]) for u in G] |
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1029 except KeyError as e: |
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1030 raise nx.NetworkXError( |
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1031 "Failed to relabel nodes: missing node labels found. Use relabel=False." |
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1032 ) from e |
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1033 x, y = zip(*mapping) |
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1034 if len(set(y)) != len(G): |
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1035 raise nx.NetworkXError( |
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1036 "Failed to relabel nodes: " |
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1037 "duplicate node labels found. " |
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1038 "Use relabel=False." |
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1039 ) |
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1040 mapping = dict(mapping) |
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1041 H = nx.relabel_nodes(G, mapping) |
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1042 # relabel attributes |
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1043 for n in G: |
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1044 m = mapping[n] |
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1045 H.nodes[m]["id"] = n |
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1046 H.nodes[m].pop("label") |
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1047 if "pid" in H.nodes[m]: |
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1048 H.nodes[m]["pid"] = mapping[G.nodes[n]["pid"]] |
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1049 if "parents" in H.nodes[m]: |
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1050 H.nodes[m]["parents"] = [mapping[p] for p in G.nodes[n]["parents"]] |
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1051 return H |