Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/readwrite/json_graph/jit.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 """ |
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2 Read and write NetworkX graphs as JavaScript InfoVis Toolkit (JIT) format JSON. |
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3 |
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4 See the `JIT documentation`_ for more examples. |
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5 |
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6 Format |
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7 ------ |
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8 var json = [ |
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9 { |
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10 "id": "aUniqueIdentifier", |
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11 "name": "usually a nodes name", |
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12 "data": { |
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13 "some key": "some value", |
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14 "some other key": "some other value" |
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15 }, |
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16 "adjacencies": [ |
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17 { |
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18 nodeTo:"aNodeId", |
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19 data: {} //put whatever you want here |
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20 }, |
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21 'other adjacencies go here...' |
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22 }, |
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23 |
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24 'other nodes go here...' |
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25 ]; |
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26 .. _JIT documentation: http://thejit.org |
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27 """ |
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28 |
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29 import json |
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30 import networkx as nx |
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31 from networkx.utils.decorators import not_implemented_for |
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32 |
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33 __all__ = ["jit_graph", "jit_data"] |
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34 |
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35 |
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36 def jit_graph(data, create_using=None): |
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37 """Read a graph from JIT JSON. |
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38 |
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39 Parameters |
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40 ---------- |
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41 data : JSON Graph Object |
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42 |
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43 create_using : Networkx Graph, optional (default: Graph()) |
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44 Return graph of this type. The provided instance will be cleared. |
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45 |
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46 Returns |
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47 ------- |
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48 G : NetworkX Graph built from create_using if provided. |
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49 """ |
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50 if create_using is None: |
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51 G = nx.Graph() |
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52 else: |
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53 G = create_using |
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54 G.clear() |
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55 |
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56 if isinstance(data, str): |
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57 data = json.loads(data) |
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58 |
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59 for node in data: |
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60 G.add_node(node["id"], **node["data"]) |
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61 if node.get("adjacencies") is not None: |
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62 for adj in node["adjacencies"]: |
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63 G.add_edge(node["id"], adj["nodeTo"], **adj["data"]) |
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64 return G |
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65 |
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66 |
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67 @not_implemented_for("multigraph") |
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68 def jit_data(G, indent=None, default=None): |
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69 """Returns data in JIT JSON format. |
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70 |
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71 Parameters |
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72 ---------- |
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73 G : NetworkX Graph |
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74 |
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75 indent: optional, default=None |
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76 If indent is a non-negative integer, then JSON array elements and |
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77 object members will be pretty-printed with that indent level. |
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78 An indent level of 0, or negative, will only insert newlines. |
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79 None (the default) selects the most compact representation. |
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80 |
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81 default: optional, default=None |
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82 It will pass the value to the json.dumps function in order to |
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83 be able to serialize custom objects used as nodes. |
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84 |
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85 Returns |
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86 ------- |
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87 data: JIT JSON string |
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88 """ |
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89 json_graph = [] |
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90 for node in G.nodes(): |
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91 json_node = {"id": node, "name": node} |
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92 # node data |
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93 json_node["data"] = G.nodes[node] |
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94 # adjacencies |
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95 if G[node]: |
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96 json_node["adjacencies"] = [] |
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97 for neighbour in G[node]: |
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98 adjacency = {"nodeTo": neighbour} |
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99 # adjacency data |
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100 adjacency["data"] = G.edges[node, neighbour] |
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101 json_node["adjacencies"].append(adjacency) |
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102 json_graph.append(json_node) |
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103 return json.dumps(json_graph, indent=indent, default=default) |