annotate test_weblogo.py @ 5:b89bb51eba83

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author davidmurphy
date Mon, 16 Jan 2012 06:59:52 -0500
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1 #!/usr/bin/env python
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2
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3 # Copyright (c) 2006, The Regents of the University of California, through
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4 # Lawrence Berkeley National Laboratory (subject to receipt of any required
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5 # approvals from the U.S. Dept. of Energy). All rights reserved.
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6
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7 # This software is distributed under the new BSD Open Source License.
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8 # <http://www.opensource.org/licenses/bsd-license.html>
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9 #
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10 # Redistribution and use in source and binary forms, with or without
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11 # modification, are permitted provided that the following conditions are met:
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12 #
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13 # (1) Redistributions of source code must retain the above copyright notice,
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14 # this list of conditions and the following disclaimer.
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15 #
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16 # (2) Redistributions in binary form must reproduce the above copyright
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17 # notice, this list of conditions and the following disclaimer in the
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18 # documentation and or other materials provided with the distribution.
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19 #
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20 # (3) Neither the name of the University of California, Lawrence Berkeley
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21 # National Laboratory, U.S. Dept. of Energy nor the names of its contributors
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22 # may be used to endorse or promote products derived from this software
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23 # without specific prior written permission.
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24 #
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25 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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26 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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27 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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28 # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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29 # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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30 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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31 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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32 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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33 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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34 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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35 # POSSIBILITY OF SUCH DAMAGE.
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36
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37
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38 import unittest
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39
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40 import weblogolib
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41 from weblogolib import *
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42 from weblogolib import parse_prior, GhostscriptAPI
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43 from weblogolib.color import *
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44 from weblogolib.colorscheme import *
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45 from StringIO import StringIO
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46 import sys
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47
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48 from numpy import array, asarray, float64, ones, zeros, int32,all,any, shape
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49 import numpy as na
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50
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51 from corebio import seq_io
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52 from corebio.seq import *
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53
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54 # python2.3 compatability
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55 from corebio._future.subprocess import *
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56 from corebio._future import resource_stream
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57
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58 from corebio.moremath import entropy
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59 from math import log, sqrt
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60 codon_alphabetU=['AAA', 'AAC', 'AAG', 'AAU', 'ACA', 'ACC', 'ACG', 'ACU', 'AGA', 'AGC', 'AGG', 'AGU', 'AUA', 'AUC', 'AUG', 'AUU', 'CAA', 'CAC', 'CAG', 'CAU', 'CCA', 'CCC', 'CCG', 'CCU', 'CGA', 'CGC', 'CGG', 'CGU', 'CUA', 'CUC', 'CUG', 'CUU', 'GAA', 'GAC', 'GAG', 'GAU', 'GCA', 'GCC', 'GCG', 'GCU', 'GGA', 'GGC', 'GGG', 'GGU', 'GUA', 'GUC', 'GUG', 'GUU', 'UAA', 'UAC', 'UAG', 'UAU', 'UCA', 'UCC', 'UCG', 'UCU', 'UGA', 'UGC', 'UGG', 'UGU', 'UUA', 'UUC', 'UUG', 'UUU']
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61 codon_alphabetT=['AAA', 'AAC', 'AAG', 'AAT', 'ACA', 'ACC', 'ACG', 'ACT', 'AGA', 'AGC', 'AGG', 'AGT', 'ATA', 'ATC', 'ATG', 'ATT', 'CAA', 'CAC', 'CAG', 'CAT', 'CCA', 'CCC', 'CCG', 'CCT', 'CGA', 'CGC', 'CGG', 'CGT', 'CTA', 'CTC', 'CTG', 'CTT', 'GAA', 'GAC', 'GAG', 'GAT', 'GCA', 'GCC', 'GCG', 'GCT', 'GGA', 'GGC', 'GGG', 'GGT', 'GTA', 'GTC', 'GTG', 'GTT', 'TAA', 'TAC', 'TAG', 'TAT', 'TCA', 'TCC', 'TCG', 'TCT', 'TGA', 'TGC', 'TGG', 'TGT', 'TTA', 'TTC', 'TTG', 'TTT']
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62
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63
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64 def testdata_stream( name ):
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65 return resource_stream(__name__, 'tests/data/'+name, __file__)
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66
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67 class test_logoformat(unittest.TestCase) :
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68
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69 def test_options(self) :
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70 options = LogoOptions()
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71
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72
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73 class test_ghostscript(unittest.TestCase) :
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74 def test_version(self) :
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75 version = GhostscriptAPI().version
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76
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77
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78
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79 class test_parse_prior(unittest.TestCase) :
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80 def assertTrue(self, bool) :
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81 self.assertEquals( bool, True)
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82
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83 def test_parse_prior_none(self) :
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84 self.assertEquals( None,
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85 parse_prior(None, unambiguous_protein_alphabet ) )
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86 self.assertEquals( None,
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87 parse_prior( 'none', unambiguous_protein_alphabet ) )
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88 self.assertEquals( None,
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89 parse_prior( 'noNe', None) )
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90
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91 def test_parse_prior_equiprobable(self) :
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92 self.assertTrue( all(20.*equiprobable_distribution(20) ==
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93 parse_prior( 'equiprobable', unambiguous_protein_alphabet ) ) )
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94
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95 self.assertTrue(
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96 all( 1.2* equiprobable_distribution(3)
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97 == parse_prior( ' equiprobablE ', Alphabet('123'), 1.2 ) ) )
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98
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99 def test_parse_prior_percentage(self) :
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100 #print parse_prior( '50%', unambiguous_dna_alphabet, 1. )
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101 self.assertTrue( all( equiprobable_distribution(4)
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102 == parse_prior( '50%', unambiguous_dna_alphabet, 1. ) ) )
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103
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104 self.assertTrue( all( equiprobable_distribution(4)
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105 == parse_prior( ' 50.0 % ', unambiguous_dna_alphabet, 1. ) ) )
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106
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107 self.assertTrue( all( array( (0.3,0.2,0.2,0.3), float64)
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108 == parse_prior( ' 40.0 % ', unambiguous_dna_alphabet, 1. ) ) )
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109
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110 def test_parse_prior_float(self) :
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111 self.assertTrue( all( equiprobable_distribution(4)
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112 == parse_prior( '0.5', unambiguous_dna_alphabet, 1. ) ) )
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113
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114 self.assertTrue( all( equiprobable_distribution(4)
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115 == parse_prior( ' 0.500 ', unambiguous_dna_alphabet, 1. ) ) )
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116
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117 self.assertTrue( all( array( (0.3,0.2,0.2,0.3), float64)
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118 == parse_prior( ' 0.40 ', unambiguous_dna_alphabet, 1. ) ) )
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119
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120 def test_auto(self) :
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121 self.assertTrue( all(4.*equiprobable_distribution(4) ==
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122 parse_prior( 'auto', unambiguous_dna_alphabet ) ) )
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123 self.assertTrue( all(4.*equiprobable_distribution(4) ==
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124 parse_prior( 'automatic', unambiguous_dna_alphabet ) ) )
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125
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126 def test_weight(self) :
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127 self.assertTrue( all(4.*equiprobable_distribution(4) ==
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128 parse_prior( 'automatic', unambiguous_dna_alphabet ) ) )
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129 self.assertTrue( all(123.123*equiprobable_distribution(4) ==
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130 parse_prior( 'auto', unambiguous_dna_alphabet , 123.123) ) )
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131
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132 def test_explicit(self) :
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133 s = "{'A':10, 'C':40, 'G':40, 'T':10}"
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134 p = array( (10, 40, 40,10), float64)*4./100.
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135 self.assertTrue( all(
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136 p == parse_prior( s, unambiguous_dna_alphabet ) ) )
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137
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138
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139 class test_logooptions(unittest.TestCase) :
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140 def test_create(self) :
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141 opt = LogoOptions()
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142 opt.small_fontsize =10
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143 options = repr(opt)
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144
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145 opt = LogoOptions(title="sometitle")
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146 assert opt.title == "sometitle"
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147
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148 class test_logosize(unittest.TestCase) :
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149 def test_create(self) :
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150 s = LogoSize(101.0,10.0)
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151 assert s.stack_width == 101.0
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152 r = repr(s)
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153
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154
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155 class test_seqlogo(unittest.TestCase) :
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156 # FIXME: The version of python used by Popen may not be the
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157 # same as that used to run this test.
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158 def _exec(self, args, outputtext, returncode =0, stdin=None) :
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159 if not stdin :
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160 stdin = testdata_stream("cap.fa")
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161 args = ["./weblogo"] + args
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162 p = Popen(args,stdin=stdin,stdout=PIPE, stderr=PIPE)
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163 (out, err) = p.communicate()
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164 if returncode ==0 and p.returncode >0 :
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165 print err
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166 self.assertEquals(returncode, p.returncode)
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167 if returncode == 0 : self.assertEquals( len(err), 0)
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168
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169 for item in outputtext :
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170 self.failUnless(item in out)
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171
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172
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173
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174 def test_malformed_options(self) :
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175 self._exec( ["--notarealoption"], [], 2)
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176 self._exec( ["extrajunk"], [], 2)
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177 self._exec( ["-I"], [], 2)
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178
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179 def test_help_option(self) :
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180 self._exec( ["-h"], ["options"])
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181 self._exec( ["--help"], ["options"])
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182
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183 def test_version_option(self) :
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184 self._exec( ['--version'], weblogolib.__version__)
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185
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186
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187 def test_default_build(self) :
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188 self._exec( [], ["%%Title: Sequence Logo:"] )
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189
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190
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davidmurphy
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191 # Format options
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192 def test_width(self) :
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davidmurphy
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193 self._exec( ['-W','1234'], ["/stack_width 1234"] )
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davidmurphy
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194 self._exec( ['--stack-width','1234'], ["/stack_width 1234"] )
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davidmurphy
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195
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196 def test_height(self) :
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197 self._exec( ['-H','1234'], ["/stack_height 1234"] )
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davidmurphy
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198 self._exec( ['--stack-height','1234'], ["/stack_height 1234"] )
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davidmurphy
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199
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davidmurphy
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200
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davidmurphy
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201 def test_stacks_per_line(self) :
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davidmurphy
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202 self._exec( ['-n','7'], ["/stacks_per_line 7 def"] )
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davidmurphy
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203 self._exec( ['--stacks-per-line','7'], ["/stacks_per_line 7 def"] )
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diff changeset
204
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205
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206 def test_title(self) :
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207 self._exec( ['-t', '3456'], ['/logo_title (3456) def',
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davidmurphy
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diff changeset
208 '/show_title True def'])
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davidmurphy
parents:
diff changeset
209 self._exec( ['-t', ''], ['/logo_title () def',
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davidmurphy
parents:
diff changeset
210 '/show_title False def'])
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davidmurphy
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diff changeset
211 self._exec( ['--title', '3456'], ['/logo_title (3456) def',
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davidmurphy
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diff changeset
212 '/show_title True def'])
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davidmurphy
parents:
diff changeset
213
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davidmurphy
parents:
diff changeset
214
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davidmurphy
parents:
diff changeset
215
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davidmurphy
parents:
diff changeset
216
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davidmurphy
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diff changeset
217
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davidmurphy
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diff changeset
218 class test_which(unittest.TestCase) :
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davidmurphy
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219 def test_which(self):
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220 tests = (
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davidmurphy
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221 (seq_io.read(testdata_stream('cap.fa')), codon_alphabetT),
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davidmurphy
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diff changeset
222 (seq_io.read(testdata_stream('capu.fa')), codon_alphabetU),
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davidmurphy
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diff changeset
223
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davidmurphy
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224 #(seq_io.read(testdata_stream('cox2.msf')), unambiguous_protein_alphabet),
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davidmurphy
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225 #(seq_io.read(testdata_stream('Rv3829c.fasta')), unambiguous_protein_alphabet),
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davidmurphy
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diff changeset
226 )
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davidmurphy
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diff changeset
227 for t in tests :
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davidmurphy
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228 self.failUnlessEqual(which_alphabet(t[0]), t[1])
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davidmurphy
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229
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diff changeset
230
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231
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232
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233 class test_colorscheme(unittest.TestCase) :
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234
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235 def test_colorgroup(self) :
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236 cr = ColorGroup( "ABC", "black", "Because")
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237 self.assertEquals( cr.description, "Because")
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238
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239 def test_colorscheme(self) :
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240 cs = ColorScheme([
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241 ColorGroup("G", "orange"),
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davidmurphy
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242 ColorGroup("TU", "red"),
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davidmurphy
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243 ColorGroup("C", "blue"),
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davidmurphy
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244 ColorGroup("A", "green")
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davidmurphy
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245 ],
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davidmurphy
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246 title = "title",
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davidmurphy
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diff changeset
247 description = "description",
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davidmurphy
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248 )
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249
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250 self.assertEquals( cs.color('A'), Color.by_name("green"))
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davidmurphy
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251 self.assertEquals( cs.color('X'), cs.default_color)
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252
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253
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254
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davidmurphy
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255 class test_color(unittest.TestCase) :
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davidmurphy
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256 # 2.3 Python compatibility
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davidmurphy
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diff changeset
257 assertTrue = unittest.TestCase.failUnless
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davidmurphy
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diff changeset
258 assertFalse = unittest.TestCase.failIf
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davidmurphy
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259
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260 def test_color_names(self) :
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261 names = Color.names()
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davidmurphy
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262 self.failUnlessEqual( len(names), 147)
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davidmurphy
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263
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davidmurphy
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264 for n in names:
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davidmurphy
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265 c = Color.by_name(n)
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davidmurphy
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266 self.assertTrue( c != None )
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davidmurphy
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267
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davidmurphy
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268
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269 def test_color_components(self) :
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davidmurphy
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270 white = Color.by_name("white")
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davidmurphy
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271 self.failUnlessEqual( 1.0, white.red)
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davidmurphy
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272 self.failUnlessEqual( 1.0, white.green)
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davidmurphy
parents:
diff changeset
273 self.failUnlessEqual( 1.0, white.blue)
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davidmurphy
parents:
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274
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davidmurphy
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275
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davidmurphy
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276 c = Color(0.3, 0.4, 0.2)
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davidmurphy
parents:
diff changeset
277 self.failUnlessEqual( 0.3, c.red)
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davidmurphy
parents:
diff changeset
278 self.failUnlessEqual( 0.4, c.green)
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davidmurphy
parents:
diff changeset
279 self.failUnlessEqual( 0.2, c.blue)
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davidmurphy
parents:
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280
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davidmurphy
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diff changeset
281 c = Color(0,128,0)
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davidmurphy
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diff changeset
282 self.failUnlessEqual( 0.0, c.red)
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davidmurphy
parents:
diff changeset
283 self.failUnlessEqual( 128./255., c.green)
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davidmurphy
parents:
diff changeset
284 self.failUnlessEqual( 0.0, c.blue)
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davidmurphy
parents:
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285
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davidmurphy
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286
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davidmurphy
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287 def test_color_from_rgb(self) :
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davidmurphy
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288 white = Color.by_name("white")
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davidmurphy
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289
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davidmurphy
parents:
diff changeset
290 self.failUnlessEqual(white, Color(1.,1.,1.) )
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davidmurphy
parents:
diff changeset
291 self.failUnlessEqual(white, Color(255,255,255) )
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davidmurphy
parents:
diff changeset
292 self.failUnlessEqual(white, Color.from_rgb(1.,1.,1.) )
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davidmurphy
parents:
diff changeset
293 self.failUnlessEqual(white, Color.from_rgb(255,255,255) )
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davidmurphy
parents:
diff changeset
294
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davidmurphy
parents:
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295
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davidmurphy
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diff changeset
296 def test_color_from_hsl(self) :
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davidmurphy
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297 red = Color.by_name("red")
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davidmurphy
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298 lime = Color.by_name("lime")
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davidmurphy
parents:
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299 saddlebrown = Color.by_name("saddlebrown")
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davidmurphy
parents:
diff changeset
300 darkgreen = Color.by_name("darkgreen")
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davidmurphy
parents:
diff changeset
301 blue = Color.by_name("blue")
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davidmurphy
parents:
diff changeset
302 green = Color.by_name("green")
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davidmurphy
parents:
diff changeset
303
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davidmurphy
parents:
diff changeset
304 self.failUnlessEqual(red, Color.from_hsl(0, 1.0,0.5) )
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davidmurphy
parents:
diff changeset
305 self.failUnlessEqual(lime, Color.from_hsl(120, 1.0, 0.5) )
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davidmurphy
parents:
diff changeset
306 self.failUnlessEqual(blue, Color.from_hsl(240, 1.0, 0.5) )
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davidmurphy
parents:
diff changeset
307 self.failUnlessEqual(Color.by_name("gray"), Color.from_hsl(0,0,0.5) )
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davidmurphy
parents:
diff changeset
308
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davidmurphy
parents:
diff changeset
309 self.failUnlessEqual(saddlebrown, Color.from_hsl(25, 0.76, 0.31) )
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davidmurphy
parents:
diff changeset
310
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davidmurphy
parents:
diff changeset
311 self.failUnlessEqual(darkgreen, Color.from_hsl(120, 1.0, 0.197) )
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davidmurphy
parents:
diff changeset
312
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davidmurphy
parents:
diff changeset
313
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davidmurphy
parents:
diff changeset
314 def test_color_by_name(self):
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davidmurphy
parents:
diff changeset
315 white = Color.by_name("white")
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davidmurphy
parents:
diff changeset
316 self.failUnlessEqual(white, Color.by_name("white"))
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davidmurphy
parents:
diff changeset
317 self.failUnlessEqual(white, Color.by_name("WHITE"))
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davidmurphy
parents:
diff changeset
318 self.failUnlessEqual(white, Color.by_name(" wHiTe \t\n\t"))
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davidmurphy
parents:
diff changeset
319
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davidmurphy
parents:
diff changeset
320
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davidmurphy
parents:
diff changeset
321 self.failUnlessEqual(Color(255,255,240), Color.by_name("ivory"))
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davidmurphy
parents:
diff changeset
322 self.failUnlessEqual(Color(70,130,180), Color.by_name("steelblue"))
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davidmurphy
parents:
diff changeset
323
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davidmurphy
parents:
diff changeset
324 self.failUnlessEqual(Color(0,128,0), Color.by_name("green"))
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davidmurphy
parents:
diff changeset
325
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davidmurphy
parents:
diff changeset
326
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davidmurphy
parents:
diff changeset
327 def test_color_from_invalid_name(self):
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davidmurphy
parents:
diff changeset
328 self.failUnlessRaises( ValueError, Color.by_name, "not_a_color")
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davidmurphy
parents:
diff changeset
329
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davidmurphy
parents:
diff changeset
330
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davidmurphy
parents:
diff changeset
331 def test_color_clipping(self):
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davidmurphy
parents:
diff changeset
332 red = Color.by_name("red")
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davidmurphy
parents:
diff changeset
333 self.failUnlessEqual(red, Color(255,0,0) )
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davidmurphy
parents:
diff changeset
334 self.failUnlessEqual(red, Color(260,-10,0) )
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davidmurphy
parents:
diff changeset
335 self.failUnlessEqual(red, Color(1.1,-0.,-1.) )
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davidmurphy
parents:
diff changeset
336
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davidmurphy
parents:
diff changeset
337 self.failUnlessEqual( Color(1.0001, 213.0, 1.2).red, 1.0 )
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davidmurphy
parents:
diff changeset
338 self.failUnlessEqual( Color(-0.001, -2183.0, -1.0).red, 0.0 )
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davidmurphy
parents:
diff changeset
339 self.failUnlessEqual( Color(1.0001, 213.0, 1.2).green, 1.0 )
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davidmurphy
parents:
diff changeset
340 self.failUnlessEqual( Color(-0.001, -2183.0, -1.0).green, 0.0 )
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davidmurphy
parents:
diff changeset
341 self.failUnlessEqual( Color(1.0001, 213.0, 1.2).blue, 1.0 )
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davidmurphy
parents:
diff changeset
342 self.failUnlessEqual( Color(-0.001, -2183.0, -1.0).blue, 0.0 )
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davidmurphy
parents:
diff changeset
343
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davidmurphy
parents:
diff changeset
344
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davidmurphy
parents:
diff changeset
345 def test_color_fail_on_mixed_type(self):
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davidmurphy
parents:
diff changeset
346 self.failUnlessRaises( TypeError, Color.from_rgb, 1,1,1.0 )
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davidmurphy
parents:
diff changeset
347 self.failUnlessRaises( TypeError, Color.from_rgb, 1.0,1,1.0 )
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davidmurphy
parents:
diff changeset
348
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davidmurphy
parents:
diff changeset
349 def test_color_red(self) :
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davidmurphy
parents:
diff changeset
350 # Check Usage comment in Color
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davidmurphy
parents:
diff changeset
351 red = Color.by_name("red")
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davidmurphy
parents:
diff changeset
352 self.failUnlessEqual( red , Color(255,0,0) )
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davidmurphy
parents:
diff changeset
353 self.failUnlessEqual( red, Color(1., 0., 0.) )
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davidmurphy
parents:
diff changeset
354
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davidmurphy
parents:
diff changeset
355 self.failUnlessEqual( red , Color.from_rgb(1.,0.,0.) )
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davidmurphy
parents:
diff changeset
356 self.failUnlessEqual( red , Color.from_rgb(255,0,0) )
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davidmurphy
parents:
diff changeset
357 self.failUnlessEqual( red , Color.from_hsl(0.,1., 0.5) )
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davidmurphy
parents:
diff changeset
358
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davidmurphy
parents:
diff changeset
359 self.failUnlessEqual( red , Color.from_string("red") )
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davidmurphy
parents:
diff changeset
360 self.failUnlessEqual( red , Color.from_string("RED") )
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davidmurphy
parents:
diff changeset
361 self.failUnlessEqual( red , Color.from_string("#F00") )
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davidmurphy
parents:
diff changeset
362 self.failUnlessEqual( red , Color.from_string("#FF0000") )
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davidmurphy
parents:
diff changeset
363 self.failUnlessEqual( red , Color.from_string("rgb(255, 0, 0)") )
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davidmurphy
parents:
diff changeset
364 self.failUnlessEqual( red , Color.from_string("rgb(100%, 0%, 0%)") )
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davidmurphy
parents:
diff changeset
365 self.failUnlessEqual( red , Color.from_string("hsl(0, 100%, 50%)") )
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davidmurphy
parents:
diff changeset
366
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davidmurphy
parents:
diff changeset
367
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davidmurphy
parents:
diff changeset
368 def test_color_from_string(self) :
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davidmurphy
parents:
diff changeset
369 purple = Color(128,0,128)
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davidmurphy
parents:
diff changeset
370 red = Color(255,0,0)
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davidmurphy
parents:
diff changeset
371 skyblue = Color(135,206,235)
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davidmurphy
parents:
diff changeset
372
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davidmurphy
parents:
diff changeset
373 red_strings = ("red",
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davidmurphy
parents:
diff changeset
374 "ReD",
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davidmurphy
parents:
diff changeset
375 "RED",
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davidmurphy
parents:
diff changeset
376 " Red \t",
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davidmurphy
parents:
diff changeset
377 "#F00",
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davidmurphy
parents:
diff changeset
378 "#FF0000",
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davidmurphy
parents:
diff changeset
379 "rgb(255, 0, 0)",
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davidmurphy
parents:
diff changeset
380 "rgb(100%, 0%, 0%)",
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davidmurphy
parents:
diff changeset
381 "hsl(0, 100%, 50%)")
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davidmurphy
parents:
diff changeset
382
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davidmurphy
parents:
diff changeset
383 for s in red_strings:
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davidmurphy
parents:
diff changeset
384 self.failUnlessEqual( red, Color.from_string(s) )
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davidmurphy
parents:
diff changeset
385
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davidmurphy
parents:
diff changeset
386 skyblue_strings = ("skyblue",
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davidmurphy
parents:
diff changeset
387 "SKYBLUE",
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davidmurphy
parents:
diff changeset
388 " \t\n SkyBlue \t",
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davidmurphy
parents:
diff changeset
389 "#87ceeb",
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davidmurphy
parents:
diff changeset
390 "rgb(135,206,235)"
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davidmurphy
parents:
diff changeset
391 )
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davidmurphy
parents:
diff changeset
392
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davidmurphy
parents:
diff changeset
393 for s in skyblue_strings:
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davidmurphy
parents:
diff changeset
394 self.failUnlessEqual( skyblue, Color.from_string(s) )
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davidmurphy
parents:
diff changeset
395
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davidmurphy
parents:
diff changeset
396
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davidmurphy
parents:
diff changeset
397
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davidmurphy
parents:
diff changeset
398 def test_color_equality(self):
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davidmurphy
parents:
diff changeset
399 c1 = Color(123,99,12)
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davidmurphy
parents:
diff changeset
400 c2 = Color(123,99,12)
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davidmurphy
parents:
diff changeset
401
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davidmurphy
parents:
diff changeset
402 self.failUnlessEqual(c1,c2)
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davidmurphy
parents:
diff changeset
403
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davidmurphy
parents:
diff changeset
404
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davidmurphy
parents:
diff changeset
405
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davidmurphy
parents:
diff changeset
406
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davidmurphy
parents:
diff changeset
407
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davidmurphy
parents:
diff changeset
408
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davidmurphy
parents:
diff changeset
409 class test_Dirichlet(unittest.TestCase) :
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davidmurphy
parents:
diff changeset
410 # 2.3 Python compatibility
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davidmurphy
parents:
diff changeset
411 assertTrue = unittest.TestCase.failUnless
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davidmurphy
parents:
diff changeset
412 assertFalse = unittest.TestCase.failIf
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davidmurphy
parents:
diff changeset
413
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davidmurphy
parents:
diff changeset
414
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davidmurphy
parents:
diff changeset
415 def test_init(self) :
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davidmurphy
parents:
diff changeset
416 d = Dirichlet( ( 1,1,1,1,) )
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davidmurphy
parents:
diff changeset
417
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davidmurphy
parents:
diff changeset
418
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davidmurphy
parents:
diff changeset
419 def test_random(self) :
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davidmurphy
parents:
diff changeset
420
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davidmurphy
parents:
diff changeset
421
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davidmurphy
parents:
diff changeset
422 def do_test( alpha, samples = 1000) :
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davidmurphy
parents:
diff changeset
423 ent = zeros( (samples,), float64)
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davidmurphy
parents:
diff changeset
424 #alpha = ones( ( K,), Float64 ) * A/K
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davidmurphy
parents:
diff changeset
425
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davidmurphy
parents:
diff changeset
426 #pt = zeros( (len(alpha) ,), Float64)
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davidmurphy
parents:
diff changeset
427 d = Dirichlet(alpha)
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davidmurphy
parents:
diff changeset
428 for s in range(samples) :
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davidmurphy
parents:
diff changeset
429 p = d.sample()
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davidmurphy
parents:
diff changeset
430 #print p
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davidmurphy
parents:
diff changeset
431 #pt +=p
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davidmurphy
parents:
diff changeset
432 ent[s] = entropy(p)
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davidmurphy
parents:
diff changeset
433
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davidmurphy
parents:
diff changeset
434 #print pt/samples
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davidmurphy
parents:
diff changeset
435
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davidmurphy
parents:
diff changeset
436 m = mean(ent)
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davidmurphy
parents:
diff changeset
437 v = var(ent)
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davidmurphy
parents:
diff changeset
438
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davidmurphy
parents:
diff changeset
439 dm = d.mean_entropy()
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davidmurphy
parents:
diff changeset
440 dv = d.variance_entropy()
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davidmurphy
parents:
diff changeset
441
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davidmurphy
parents:
diff changeset
442 #print alpha, ':', m, v, dm, dv
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davidmurphy
parents:
diff changeset
443 error = 4. * sqrt(v/samples)
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davidmurphy
parents:
diff changeset
444 self.assertTrue( abs(m-dm) < error)
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davidmurphy
parents:
diff changeset
445 self.assertTrue( abs(v-dv) < error) # dodgy error estimate
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davidmurphy
parents:
diff changeset
446
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davidmurphy
parents:
diff changeset
447
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davidmurphy
parents:
diff changeset
448 do_test( (1., 1.) )
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davidmurphy
parents:
diff changeset
449 do_test( (2., 1.) )
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davidmurphy
parents:
diff changeset
450 do_test( (3., 1.) )
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davidmurphy
parents:
diff changeset
451 do_test( (4., 1.) )
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davidmurphy
parents:
diff changeset
452 do_test( (5., 1.) )
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davidmurphy
parents:
diff changeset
453 do_test( (6., 1.) )
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davidmurphy
parents:
diff changeset
454
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davidmurphy
parents:
diff changeset
455 do_test( (1., 1.) )
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davidmurphy
parents:
diff changeset
456 do_test( (20., 20.) )
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davidmurphy
parents:
diff changeset
457 do_test( (1., 1., 1., 1., 1., 1., 1., 1., 1., 1.) )
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davidmurphy
parents:
diff changeset
458 do_test( (.1, .1, .1, .1, .1, .1, .1, .1, .1, .1) )
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davidmurphy
parents:
diff changeset
459 do_test( (.01, .01, .01, .01, .01, .01, .01, .01, .01, .01) )
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davidmurphy
parents:
diff changeset
460 do_test( (2.0, 6.0, 1.0, 1.0) )
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davidmurphy
parents:
diff changeset
461
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davidmurphy
parents:
diff changeset
462
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davidmurphy
parents:
diff changeset
463 def test_mean(self) :
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davidmurphy
parents:
diff changeset
464 alpha = ones( ( 10,), float64 ) * 23.
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davidmurphy
parents:
diff changeset
465 d = Dirichlet(alpha)
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davidmurphy
parents:
diff changeset
466 m = d.mean()
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davidmurphy
parents:
diff changeset
467 self.assertAlmostEqual( m[2], 1./10)
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davidmurphy
parents:
diff changeset
468 self.assertAlmostEqual( sum(m), 1.0)
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davidmurphy
parents:
diff changeset
469
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davidmurphy
parents:
diff changeset
470 def test_covariance(self) :
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davidmurphy
parents:
diff changeset
471 alpha = ones( ( 4,), float64 )
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davidmurphy
parents:
diff changeset
472 d = Dirichlet(alpha)
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davidmurphy
parents:
diff changeset
473 cv = d.covariance()
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davidmurphy
parents:
diff changeset
474 self.assertEqual( cv.shape, (4,4) )
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davidmurphy
parents:
diff changeset
475 self.assertAlmostEqual( cv[0,0], 1.0 * (1.0 - 1./4.0)/ (4.0 * 5.0) )
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davidmurphy
parents:
diff changeset
476 self.assertAlmostEqual( cv[0,1], - 1 / ( 4. * 4. * 5.) )
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davidmurphy
parents:
diff changeset
477
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davidmurphy
parents:
diff changeset
478 def test_mean_x(self) :
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davidmurphy
parents:
diff changeset
479 alpha = (1.0, 2.0, 3.0, 4.0)
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davidmurphy
parents:
diff changeset
480 xx = (2.0, 2.0, 2.0, 2.0)
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davidmurphy
parents:
diff changeset
481 m = Dirichlet(alpha).mean_x(xx)
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davidmurphy
parents:
diff changeset
482 self.assertEquals( m, 2.0)
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davidmurphy
parents:
diff changeset
483
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davidmurphy
parents:
diff changeset
484 alpha = (1.0, 1.0, 1.0, 1.0)
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davidmurphy
parents:
diff changeset
485 xx = (2.0, 3.0, 4.0, 3.0)
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davidmurphy
parents:
diff changeset
486 m = Dirichlet(alpha).mean_x(xx)
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davidmurphy
parents:
diff changeset
487 self.assertEquals( m, 3.0)
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davidmurphy
parents:
diff changeset
488
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davidmurphy
parents:
diff changeset
489 def test_variance_x(self) :
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davidmurphy
parents:
diff changeset
490 alpha = (1.0, 1.0, 1.0, 1.0)
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davidmurphy
parents:
diff changeset
491 xx = (2.0, 2.0, 2.0, 2.0)
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davidmurphy
parents:
diff changeset
492 v = Dirichlet(alpha).variance_x(xx)
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davidmurphy
parents:
diff changeset
493 self.assertAlmostEquals( v, 0.0)
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davidmurphy
parents:
diff changeset
494
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davidmurphy
parents:
diff changeset
495 alpha = (1.0, 2.0, 3.0, 4.0)
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davidmurphy
parents:
diff changeset
496 xx = (2.0, 0.0, 1.0, 10.0)
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davidmurphy
parents:
diff changeset
497 v = Dirichlet(alpha).variance_x(xx)
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davidmurphy
parents:
diff changeset
498 #print v
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davidmurphy
parents:
diff changeset
499 # TODO: Don't actually know if this is correct
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davidmurphy
parents:
diff changeset
500
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davidmurphy
parents:
diff changeset
501 def test_relative_entropy(self):
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davidmurphy
parents:
diff changeset
502 alpha = (2.0, 10.0, 1.0, 1.0)
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davidmurphy
parents:
diff changeset
503 d = Dirichlet(alpha)
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davidmurphy
parents:
diff changeset
504 pvec = (0.1, 0.2, 0.3, 0.4)
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davidmurphy
parents:
diff changeset
505
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davidmurphy
parents:
diff changeset
506 rent = d.mean_relative_entropy(pvec)
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davidmurphy
parents:
diff changeset
507 vrent = d.variance_relative_entropy(pvec)
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davidmurphy
parents:
diff changeset
508 low, high = d.interval_relative_entropy(pvec, 0.95)
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davidmurphy
parents:
diff changeset
509
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davidmurphy
parents:
diff changeset
510 #print
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davidmurphy
parents:
diff changeset
511 #print '> ', rent, vrent, low, high
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davidmurphy
parents:
diff changeset
512
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davidmurphy
parents:
diff changeset
513 # This test can fail randomly, but the precision form a few
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davidmurphy
parents:
diff changeset
514 # thousand samples is low. Increasing samples, 1000->2000
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davidmurphy
parents:
diff changeset
515 samples = 2000
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davidmurphy
parents:
diff changeset
516 sent = zeros( (samples,), float64)
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davidmurphy
parents:
diff changeset
517
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davidmurphy
parents:
diff changeset
518 for s in range(samples) :
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davidmurphy
parents:
diff changeset
519 post = d.sample()
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davidmurphy
parents:
diff changeset
520 e = -entropy(post)
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davidmurphy
parents:
diff changeset
521 for k in range(4) :
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davidmurphy
parents:
diff changeset
522 e += - post[k] * log(pvec[k])
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davidmurphy
parents:
diff changeset
523 sent[s] = e
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davidmurphy
parents:
diff changeset
524 sent.sort()
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davidmurphy
parents:
diff changeset
525 self.assertTrue( abs(sent.mean() - rent) < 4.*sqrt(vrent) )
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davidmurphy
parents:
diff changeset
526 self.assertAlmostEqual( sent.std(), sqrt(vrent), 1 )
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davidmurphy
parents:
diff changeset
527 self.assertTrue( abs(low-sent[ int( samples *0.025)])<0.2 )
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davidmurphy
parents:
diff changeset
528 self.assertTrue( abs(high-sent[ int( samples *0.975)])<0.2 )
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davidmurphy
parents:
diff changeset
529
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davidmurphy
parents:
diff changeset
530 #print '>>', mean(sent), var(sent), sent[ int( samples *0.025)] ,sent[ int( samples *0.975)]
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davidmurphy
parents:
diff changeset
531
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davidmurphy
parents:
diff changeset
532
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davidmurphy
parents:
diff changeset
533
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davidmurphy
parents:
diff changeset
534 def mean( a) :
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davidmurphy
parents:
diff changeset
535 return sum(a)/ len(a)
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davidmurphy
parents:
diff changeset
536
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davidmurphy
parents:
diff changeset
537 def var(a) :
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davidmurphy
parents:
diff changeset
538 return (sum(a*a) /len(a) ) - mean(a)**2
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davidmurphy
parents:
diff changeset
539
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davidmurphy
parents:
diff changeset
540
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davidmurphy
parents:
diff changeset
541
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davidmurphy
parents:
diff changeset
542
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davidmurphy
parents:
diff changeset
543 if __name__ == '__main__':
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davidmurphy
parents:
diff changeset
544 unittest.main()