1 | #!/usr/bin/env python |
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2 | |
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3 | #TEST |
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4 | |
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5 | import unittest |
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6 | from math import sqrt |
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7 | |
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8 | |
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9 | from least_squares import * |
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10 | from Numeric import allclose, array, transpose |
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11 | |
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12 | def distance(x, y): |
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13 | return sqrt( sum( (array(x)-array(y))**2 )) |
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14 | |
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15 | def linear_function(point): |
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16 | point = array(point) |
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17 | return point[:,0]+point[:,1] |
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18 | |
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19 | |
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20 | class TestCase(unittest.TestCase): |
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21 | |
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22 | def setUp(self): |
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23 | pass |
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24 | |
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25 | def tearDown(self): |
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26 | pass |
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27 | |
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28 | def test_datapoint_at_centroid(self): |
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29 | a = [0.0, 0.0] |
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30 | b = [0.0, 2.0] |
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31 | c = [2.0,0.0] |
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32 | points = [a, b, c] |
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33 | vertices = [ [1,0,2] ] #bac |
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34 | |
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35 | data = [ [2.0/3, 2.0/3] ] #Use centroid as one data point |
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36 | |
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37 | interp = Interpolation(points, vertices, data) |
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38 | assert allclose(interp.get_A(), [[1./3, 1./3, 1./3]]) |
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39 | |
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40 | |
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41 | def test_quad_tree(self): |
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42 | p0 = [-10.0, -10.0] |
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43 | p1 = [20.0, -10.0] |
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44 | p2 = [-10.0, 20.0] |
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45 | p3 = [10.0, 50.0] |
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46 | p4 = [30.0, 30.0] |
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47 | p5 = [50.0, 10.0] |
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48 | p6 = [40.0, 60.0] |
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49 | p7 = [60.0, 40.0] |
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50 | p8 = [-66.0, 20.0] |
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51 | p9 = [10.0, -66.0] |
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52 | |
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53 | points = [p0, p1, p2, p3, p4, p5, p6, p7, p8, p9] |
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54 | triangles = [ [0, 1, 2], |
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55 | [3, 2, 4], |
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56 | [4, 2, 1], |
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57 | [4, 1, 5], |
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58 | [3, 4, 6], |
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59 | [6, 4, 7], |
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60 | [7, 4, 5], |
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61 | [8, 0, 2], |
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62 | [0, 9, 1]] |
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63 | |
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64 | data = [ [4,4] ] |
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65 | interp = Interpolation(points, triangles, data, alpha = 0.0, |
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66 | max_points_per_cell = 4) |
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67 | #print "PDSG - interp.get_A()", interp.get_A() |
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68 | answer = [ [ 0.06666667, 0.46666667, 0.46666667, 0., |
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69 | 0., 0. , 0., 0., 0., 0.]] |
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70 | assert allclose(interp.get_A(), answer) |
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71 | interp.set_point_coordinates([[-30, -30]]) #point outside of mesh |
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72 | #print "PDSG - interp.get_A()", interp.get_A() |
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73 | answer = [ [ 0.0, 0.0, 0.0, 0., |
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74 | 0., 0. , 0., 0., 0., 0.]] |
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75 | assert allclose(interp.get_A(), answer) |
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76 | |
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77 | |
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78 | #point outside of quad tree root cell |
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79 | interp.set_point_coordinates([[-70, -70]]) |
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80 | #print "PDSG - interp.get_A()", interp.get_A() |
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81 | answer = [ [ 0.0, 0.0, 0.0, 0., |
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82 | 0., 0. , 0., 0., 0., 0.]] |
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83 | assert allclose(interp.get_A(), answer) |
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84 | |
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85 | def test_expand_search(self): |
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86 | p0 = [-10.0, -10.0] |
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87 | p1 = [20.0, -10.0] |
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88 | p2 = [-10.0, 20.0] |
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89 | p3 = [10.0, 50.0] |
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90 | p4 = [30.0, 30.0] |
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91 | p5 = [50.0, 10.0] |
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92 | p6 = [40.0, 60.0] |
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93 | p7 = [60.0, 40.0] |
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94 | p8 = [-66.0, 20.0] |
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95 | p9 = [10.0, -66.0] |
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96 | |
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97 | points = [p0, p1, p2, p3, p4, p5, p6, p7, p8, p9] |
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98 | triangles = [ [0, 1, 2], |
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99 | [3, 2, 4], |
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100 | [4, 2, 1], |
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101 | [4, 1, 5], |
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102 | [3, 4, 6], |
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103 | [6, 4, 7], |
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104 | [7, 4, 5], |
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105 | [8, 0, 2], |
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106 | [0, 9, 1]] |
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107 | |
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108 | data = [ [4,4], |
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109 | [-30,10], |
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110 | [-20,0], |
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111 | [-20,10], |
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112 | [0,30], |
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113 | [10,-40], |
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114 | [10,-30], |
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115 | [10,-20], |
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116 | [10,10], |
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117 | [10,20], |
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118 | [10,30], |
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119 | [10,40], |
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120 | [20,10], |
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121 | [25,45], |
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122 | [30,0], |
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123 | [30,10], |
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124 | [30,30], |
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125 | [30,40], |
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126 | [30,50], |
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127 | [40,10], |
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128 | [40,30], |
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129 | [40,40], |
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130 | [40,50], |
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131 | [50,20], |
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132 | [50,30], |
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133 | [50,40], |
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134 | [50,50], |
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135 | [30,0], |
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136 | [-20,-20]] |
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137 | point_attributes = [ -400000, |
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138 | 10, |
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139 | 10, |
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140 | 10, |
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141 | 10, |
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142 | 10, |
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143 | 10, |
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144 | 10, |
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145 | 10, |
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146 | 10, |
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147 | 10, |
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148 | 10, |
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149 | 10, |
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150 | 10, |
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151 | 10, |
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152 | 10, |
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153 | 10, |
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154 | 10, |
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155 | 10, |
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156 | 10, |
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157 | 10, |
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158 | 10, |
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159 | 10, |
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160 | 10, |
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161 | 10, |
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162 | 10, |
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163 | 10, |
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164 | 10, |
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165 | 99] |
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166 | |
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167 | interp = Interpolation(points, triangles, data, |
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168 | alpha=0.0, expand_search=False, #verbose = True, #False, |
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169 | max_points_per_cell = 4) |
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170 | calc = interp.fit_points(point_attributes, ) |
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171 | #print "calc",calc |
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172 | |
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173 | # the point at 4,4 is ignored. An expanded search has to be done |
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174 | # to fine which triangel it's in. |
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175 | # An expanded search isn't done to find that the last point |
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176 | # isn't in the mesh. But this isn't tested. |
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177 | answer= [ 10, |
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178 | 10, |
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179 | 10, |
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180 | 10, |
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181 | 10, |
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182 | 10, |
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183 | 10, |
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184 | 10, |
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185 | 10, |
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186 | 10] |
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187 | assert allclose(calc, answer) |
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188 | |
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189 | def test_quad_treeII(self): |
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190 | p0 = [-66.0, 14.0] |
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191 | p1 = [14.0, -66.0] |
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192 | p2 = [14.0, 14.0] |
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193 | p3 = [60.0, 20.0] |
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194 | p4 = [10.0, 60.0] |
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195 | p5 = [60.0, 60.0] |
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196 | |
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197 | points = [p0, p1, p2, p3, p4, p5] |
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198 | triangles = [ [0, 1, 2], |
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199 | [3, 2, 1], |
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200 | [0, 2, 4], |
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201 | [0, 2, 4], |
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202 | [4, 2, 5], |
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203 | [5, 2, 3]] |
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204 | |
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205 | data = [ [-26.0,-26.0] ] |
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206 | interp = Interpolation(points, triangles, data, alpha = 0.0, |
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207 | max_points_per_cell = 4) |
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208 | #print "PDSG - interp.get_A()", interp.get_A() |
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209 | answer = [ [ 0.5, 0.5, 0.0, 0., |
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210 | 0., 0.]] |
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211 | assert allclose(interp.get_A(), answer) |
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212 | interp.set_point_coordinates([[-30, -30]]) #point outside of mesh |
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213 | #print "PDSG -30,-30 - interp.get_A()", interp.get_A() |
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214 | answer = [ [ 0.0, 0.0, 0.0, 0., |
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215 | 0., 0.]] |
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216 | assert allclose(interp.get_A(), answer) |
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217 | |
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218 | |
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219 | #point outside of quad tree root cell |
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220 | interp.set_point_coordinates([[-70, -70]]) |
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221 | #print "PDSG -70,-70 interp.get_A()", interp.get_A() |
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222 | answer = [ [ 0.0, 0.0, 0.0, 0., |
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223 | 0., 0. ]] |
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224 | assert allclose(interp.get_A(), answer) |
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225 | |
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226 | |
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227 | def test_datapoints_at_vertices(self): |
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228 | """Test that data points coinciding with vertices yield a diagonal matrix |
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229 | """ |
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230 | |
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231 | a = [0.0, 0.0] |
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232 | b = [0.0, 2.0] |
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233 | c = [2.0,0.0] |
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234 | points = [a, b, c] |
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235 | vertices = [ [1,0,2] ] #bac |
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236 | |
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237 | data = points #Use data at vertices |
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238 | |
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239 | interp = Interpolation(points, vertices, data) |
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240 | assert allclose(interp.get_A(), [[1., 0., 0.], |
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241 | [0., 1., 0.], |
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242 | [0., 0., 1.]]) |
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243 | |
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244 | |
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245 | |
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246 | def test_datapoints_on_edge_midpoints(self): |
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247 | """Try datapoints midway on edges - |
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248 | each point should affect two matrix entries equally |
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249 | """ |
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250 | |
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251 | a = [0.0, 0.0] |
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252 | b = [0.0, 2.0] |
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253 | c = [2.0,0.0] |
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254 | points = [a, b, c] |
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255 | vertices = [ [1,0,2] ] #bac |
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256 | |
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257 | data = [ [0., 1.], [1., 0.], [1., 1.] ] |
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258 | |
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259 | interp = Interpolation(points, vertices, data) |
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260 | |
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261 | assert allclose(interp.get_A(), [[0.5, 0.5, 0.0], #Affects vertex 1 and 0 |
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262 | [0.5, 0.0, 0.5], #Affects vertex 0 and 2 |
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263 | [0.0, 0.5, 0.5]]) #Affects vertex 1 and 2 |
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264 | |
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265 | |
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266 | def test_datapoints_on_edges(self): |
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267 | """Try datapoints on edges - |
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268 | each point should affect two matrix entries in proportion |
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269 | """ |
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270 | |
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271 | a = [0.0, 0.0] |
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272 | b = [0.0, 2.0] |
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273 | c = [2.0,0.0] |
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274 | points = [a, b, c] |
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275 | vertices = [ [1,0,2] ] #bac |
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276 | |
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277 | data = [ [0., 1.5], [1.5, 0.], [1.5, 0.5] ] |
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278 | |
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279 | interp = Interpolation(points, vertices, data) |
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280 | |
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281 | assert allclose(interp.get_A(), [[0.25, 0.75, 0.0], #Affects vertex 1 and 0 |
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282 | [0.25, 0.0, 0.75], #Affects vertex 0 and 2 |
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283 | [0.0, 0.25, 0.75]]) #Affects vertex 1 and 2 |
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284 | |
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285 | def test_arbitrary_datapoints(self): |
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286 | """Try arbitrary datapoints |
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287 | """ |
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288 | |
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289 | from Numeric import sum |
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290 | |
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291 | a = [0.0, 0.0] |
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292 | b = [0.0, 2.0] |
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293 | c = [2.0,0.0] |
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294 | points = [a, b, c] |
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295 | vertices = [ [1,0,2] ] #bac |
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296 | |
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297 | data = [ [0.2, 1.5], [0.123, 1.768], [1.43, 0.44] ] |
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298 | |
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299 | interp = Interpolation(points, vertices, data) |
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300 | #print "interp.get_A()", interp.get_A() |
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301 | assert allclose(sum(interp.get_A(), axis=1), 1.0) |
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302 | |
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303 | def test_arbitrary_datapoints_some_outside(self): |
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304 | """Try arbitrary datapoints one outside the triangle. |
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305 | That one should be ignored |
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306 | """ |
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307 | |
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308 | from Numeric import sum |
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309 | |
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310 | a = [0.0, 0.0] |
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311 | b = [0.0, 2.0] |
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312 | c = [2.0,0.0] |
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313 | points = [a, b, c] |
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314 | vertices = [ [1,0,2] ] #bac |
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315 | |
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316 | data = [ [0.2, 1.5], [0.123, 1.768], [1.43, 0.44], [5.0, 7.0]] |
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317 | |
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318 | |
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319 | interp = Interpolation(points, vertices, data, precrop = True) |
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320 | assert allclose(sum(interp.get_A(), axis=1), 1.0) |
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321 | |
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322 | interp = Interpolation(points, vertices, data, precrop = False) |
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323 | assert allclose(sum(interp.get_A(), axis=1), [1,1,1,0]) |
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324 | |
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325 | |
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326 | |
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327 | # this causes a memory error in scipy.sparse |
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328 | def test_more_triangles(self): |
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329 | |
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330 | a = [-1.0, 0.0] |
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331 | b = [3.0, 4.0] |
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332 | c = [4.0,1.0] |
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333 | d = [-3.0, 2.0] #3 |
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334 | e = [-1.0,-2.0] |
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335 | f = [1.0, -2.0] #5 |
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336 | |
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337 | points = [a, b, c, d,e,f] |
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338 | triangles = [[0,1,3],[1,0,2],[0,4,5], [0,5,2]] #abd bac aef afc |
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339 | |
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340 | #Data points |
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341 | data_points = [ [-3., 2.0], [-2, 1], [0.0, 1], [0, 3], [2, 3], [-1.0/3,-4./3] ] |
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342 | interp = Interpolation(points, triangles, data_points) |
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343 | |
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344 | answer = [[0.0, 0.0, 0.0, 1.0, 0.0, 0.0], #Affects point d |
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345 | [0.5, 0.0, 0.0, 0.5, 0.0, 0.0], #Affects points a and d |
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346 | [0.75, 0.25, 0.0, 0.0, 0.0, 0.0], #Affects points a and b |
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347 | [0.0, 0.5, 0.0, 0.5, 0.0, 0.0], #Affects points a and d |
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348 | [0.25, 0.75, 0.0, 0.0, 0.0, 0.0], #Affects points a and b |
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349 | [1./3, 0.0, 0.0, 0.0, 1./3, 1./3]] #Affects points a, e and f |
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350 | |
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351 | |
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352 | A = interp.get_A() |
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353 | for i in range(A.shape[0]): |
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354 | for j in range(A.shape[1]): |
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355 | if not allclose(A[i,j], answer[i][j]): |
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356 | print i,j,':',A[i,j], answer[i][j] |
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357 | |
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358 | |
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359 | assert allclose(interp.get_A(), answer) |
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360 | |
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361 | |
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362 | |
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363 | |
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364 | def test_smooth_attributes_to_mesh(self): |
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365 | a = [0.0, 0.0] |
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366 | b = [0.0, 5.0] |
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367 | c = [5.0, 0.0] |
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368 | points = [a, b, c] |
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369 | triangles = [ [1,0,2] ] #bac |
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370 | |
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371 | d1 = [1.0, 1.0] |
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372 | d2 = [1.0, 3.0] |
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373 | d3 = [3.0,1.0] |
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374 | z1 = 2 |
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375 | z2 = 4 |
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376 | z3 = 4 |
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377 | data_coords = [d1, d2, d3] |
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378 | |
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379 | interp = Interpolation(points, triangles, data_coords, alpha=5.0e-20) |
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380 | z = [z1, z2, z3] |
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381 | f = interp.fit(z) |
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382 | answer = [0, 5., 5.] |
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383 | |
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384 | #print "f\n",f |
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385 | #print "answer\n",answer |
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386 | |
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387 | assert allclose(f, answer, atol=1e-7) |
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388 | |
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389 | |
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390 | def test_smooth_att_to_meshII(self): |
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391 | |
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392 | a = [0.0, 0.0] |
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393 | b = [0.0, 5.0] |
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394 | c = [5.0, 0.0] |
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395 | points = [a, b, c] |
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396 | triangles = [ [1,0,2] ] #bac |
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397 | |
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398 | d1 = [1.0, 1.0] |
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399 | d2 = [1.0, 2.0] |
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400 | d3 = [3.0,1.0] |
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401 | data_coords = [d1, d2, d3] |
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402 | z = linear_function(data_coords) |
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403 | interp = Interpolation(points, triangles, data_coords, alpha=0.0) |
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404 | f = interp.fit(z) |
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405 | answer = linear_function(points) |
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406 | |
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407 | assert allclose(f, answer) |
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408 | |
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409 | def test_smooth_attributes_to_meshIII(self): |
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410 | |
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411 | a = [-1.0, 0.0] |
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412 | b = [3.0, 4.0] |
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413 | c = [4.0,1.0] |
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414 | d = [-3.0, 2.0] #3 |
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415 | e = [-1.0,-2.0] |
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416 | f = [1.0, -2.0] #5 |
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417 | |
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418 | vertices = [a, b, c, d,e,f] |
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419 | triangles = [[0,1,3], [1,0,2], [0,4,5], [0,5,2]] #abd bac aef afc |
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420 | |
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421 | point_coords = [[-2.0, 2.0], |
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422 | [-1.0, 1.0], |
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423 | [0.0,2.0], |
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424 | [1.0, 1.0], |
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425 | [2.0, 1.0], |
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426 | [0.0,0.0], |
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427 | [1.0, 0.0], |
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428 | [0.0, -1.0], |
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429 | [-0.2,-0.5], |
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430 | [-0.9, -1.5], |
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431 | [0.5, -1.9], |
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432 | [3.0,1.0]] |
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433 | |
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434 | z = linear_function(point_coords) |
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435 | interp = Interpolation(vertices, triangles, point_coords, alpha=0.0) |
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436 | |
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437 | #print 'z',z |
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438 | f = interp.fit(z) |
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439 | answer = linear_function(vertices) |
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440 | #print "f\n",f |
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441 | #print "answer\n",answer |
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442 | assert allclose(f, answer) |
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443 | |
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444 | |
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445 | def test_smooth_attributes_to_meshIV(self): |
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446 | """ Testing 2 attributes smoothed to the mesh |
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447 | """ |
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448 | |
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449 | a = [0.0, 0.0] |
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450 | b = [0.0, 5.0] |
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451 | c = [5.0, 0.0] |
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452 | points = [a, b, c] |
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453 | triangles = [ [1,0,2] ] #bac |
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454 | |
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455 | d1 = [1.0, 1.0] |
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456 | d2 = [1.0, 3.0] |
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457 | d3 = [3.0, 1.0] |
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458 | z1 = [2, 4] |
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459 | z2 = [4, 8] |
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460 | z3 = [4, 8] |
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461 | data_coords = [d1, d2, d3] |
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462 | |
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463 | interp = Interpolation(points, triangles, data_coords, alpha=0.0) |
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464 | z = [z1, z2, z3] |
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465 | f = interp.fit_points(z) |
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466 | answer = [[0,0], [5., 10.], [5., 10.]] |
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467 | assert allclose(f, answer) |
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468 | |
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469 | def test_interpolate_attributes_to_points(self): |
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470 | v0 = [0.0, 0.0] |
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471 | v1 = [0.0, 5.0] |
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472 | v2 = [5.0, 0.0] |
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473 | |
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474 | vertices = [v0, v1, v2] |
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475 | triangles = [ [1,0,2] ] #bac |
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476 | |
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477 | d0 = [1.0, 1.0] |
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478 | d1 = [1.0, 2.0] |
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479 | d2 = [3.0, 1.0] |
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480 | point_coords = [ d0, d1, d2] |
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481 | |
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482 | interp = Interpolation(vertices, triangles, point_coords) |
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483 | f = linear_function(vertices) |
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484 | z = interp.interpolate(f) |
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485 | answer = linear_function(point_coords) |
---|
486 | |
---|
487 | |
---|
488 | assert allclose(z, answer) |
---|
489 | |
---|
490 | |
---|
491 | def test_interpolate_attributes_to_pointsII(self): |
---|
492 | a = [-1.0, 0.0] |
---|
493 | b = [3.0, 4.0] |
---|
494 | c = [4.0, 1.0] |
---|
495 | d = [-3.0, 2.0] #3 |
---|
496 | e = [-1.0, -2.0] |
---|
497 | f = [1.0, -2.0] #5 |
---|
498 | |
---|
499 | vertices = [a, b, c, d,e,f] |
---|
500 | triangles = [[0,1,3], [1,0,2], [0,4,5], [0,5,2]] #abd bac aef afc |
---|
501 | |
---|
502 | |
---|
503 | point_coords = [[-2.0, 2.0], |
---|
504 | [-1.0, 1.0], |
---|
505 | [0.0, 2.0], |
---|
506 | [1.0, 1.0], |
---|
507 | [2.0, 1.0], |
---|
508 | [0.0, 0.0], |
---|
509 | [1.0, 0.0], |
---|
510 | [0.0, -1.0], |
---|
511 | [-0.2, -0.5], |
---|
512 | [-0.9, -1.5], |
---|
513 | [0.5, -1.9], |
---|
514 | [3.0, 1.0]] |
---|
515 | |
---|
516 | interp = Interpolation(vertices, triangles, point_coords) |
---|
517 | f = linear_function(vertices) |
---|
518 | z = interp.interpolate(f) |
---|
519 | answer = linear_function(point_coords) |
---|
520 | #print "z",z |
---|
521 | #print "answer",answer |
---|
522 | assert allclose(z, answer) |
---|
523 | |
---|
524 | def test_interpolate_attributes_to_pointsIII(self): |
---|
525 | """Test linear interpolation of known values at vertices to |
---|
526 | new points inside a triangle |
---|
527 | """ |
---|
528 | a = [0.0, 0.0] |
---|
529 | b = [0.0, 5.0] |
---|
530 | c = [5.0, 0.0] |
---|
531 | d = [5.0, 5.0] |
---|
532 | |
---|
533 | vertices = [a, b, c, d] |
---|
534 | triangles = [ [1,0,2], [2,3,0] ] #bac, cdb |
---|
535 | |
---|
536 | #Points within triangle 1 |
---|
537 | d0 = [1.0, 1.0] |
---|
538 | d1 = [1.0, 2.0] |
---|
539 | d2 = [3.0, 1.0] |
---|
540 | |
---|
541 | #Point within triangle 2 |
---|
542 | d3 = [4.0, 3.0] |
---|
543 | |
---|
544 | #Points on common edge |
---|
545 | d4 = [2.5, 2.5] |
---|
546 | d5 = [4.0, 1.0] |
---|
547 | |
---|
548 | #Point on common vertex |
---|
549 | d6 = [0., 5.] |
---|
550 | |
---|
551 | |
---|
552 | point_coords = [d0, d1, d2, d3, d4, d5, d6] |
---|
553 | |
---|
554 | interp = Interpolation(vertices, triangles, point_coords) |
---|
555 | |
---|
556 | #Known values at vertices |
---|
557 | #Functions are x+y, x+2y, 2x+y, x-y-5 |
---|
558 | f = [ [0., 0., 0., -5.], # (0,0) |
---|
559 | [5., 10., 5., -10.], # (0,5) |
---|
560 | [5., 5., 10.0, 0.], # (5,0) |
---|
561 | [10., 15., 15., -5.]] # (5,5) |
---|
562 | |
---|
563 | z = interp.interpolate(f) |
---|
564 | answer = [ [2., 3., 3., -5.], # (1,1) |
---|
565 | [3., 5., 4., -6.], # (1,2) |
---|
566 | [4., 5., 7., -3.], # (3,1) |
---|
567 | [7., 10., 11., -4.], # (4,3) |
---|
568 | [5., 7.5, 7.5, -5.], # (2.5, 2.5) |
---|
569 | [5., 6., 9., -2.], # (4,1) |
---|
570 | [5., 10., 5., -10.]] # (0,5) |
---|
571 | |
---|
572 | #print "***********" |
---|
573 | #print "z",z |
---|
574 | #print "answer",answer |
---|
575 | #print "***********" |
---|
576 | |
---|
577 | assert allclose(z, answer) |
---|
578 | |
---|
579 | def test_interpolate_attributes_to_pointsIV(self): |
---|
580 | a = [-1.0, 0.0] |
---|
581 | b = [3.0, 4.0] |
---|
582 | c = [4.0, 1.0] |
---|
583 | d = [-3.0, 2.0] #3 |
---|
584 | e = [-1.0, -2.0] |
---|
585 | f = [1.0, -2.0] #5 |
---|
586 | |
---|
587 | vertices = [a, b, c, d,e,f] |
---|
588 | triangles = [[0,1,3], [1,0,2], [0,4,5], [0,5,2]] #abd bac aef afc |
---|
589 | |
---|
590 | |
---|
591 | point_coords = [[-2.0, 2.0], |
---|
592 | [-1.0, 1.0], |
---|
593 | [0.0, 2.0], |
---|
594 | [1.0, 1.0], |
---|
595 | [2.0, 1.0], |
---|
596 | [0.0, 0.0], |
---|
597 | [1.0, 0.0], |
---|
598 | [0.0, -1.0], |
---|
599 | [-0.2, -0.5], |
---|
600 | [-0.9, -1.5], |
---|
601 | [0.5, -1.9], |
---|
602 | [3.0, 1.0]] |
---|
603 | |
---|
604 | interp = Interpolation(vertices, triangles, point_coords) |
---|
605 | f = array([linear_function(vertices),2*linear_function(vertices) ]) |
---|
606 | f = transpose(f) |
---|
607 | #print "f",f |
---|
608 | z = interp.interpolate(f) |
---|
609 | answer = [linear_function(point_coords), |
---|
610 | 2*linear_function(point_coords) ] |
---|
611 | answer = transpose(answer) |
---|
612 | #print "z",z |
---|
613 | #print "answer",answer |
---|
614 | assert allclose(z, answer) |
---|
615 | |
---|
616 | def test_smooth_attributes_to_mesh_function(self): |
---|
617 | """ Testing 2 attributes smoothed to the mesh |
---|
618 | """ |
---|
619 | |
---|
620 | a = [0.0, 0.0] |
---|
621 | b = [0.0, 5.0] |
---|
622 | c = [5.0, 0.0] |
---|
623 | points = [a, b, c] |
---|
624 | triangles = [ [1,0,2] ] #bac |
---|
625 | |
---|
626 | d1 = [1.0, 1.0] |
---|
627 | d2 = [1.0, 3.0] |
---|
628 | d3 = [3.0, 1.0] |
---|
629 | z1 = [2, 4] |
---|
630 | z2 = [4, 8] |
---|
631 | z3 = [4, 8] |
---|
632 | data_coords = [d1, d2, d3] |
---|
633 | z = [z1, z2, z3] |
---|
634 | |
---|
635 | f = fit_to_mesh(points, triangles, data_coords, z, alpha=0.0) |
---|
636 | answer = [[0, 0], [5., 10.], [5., 10.]] |
---|
637 | |
---|
638 | assert allclose(f, answer) |
---|
639 | |
---|
640 | |
---|
641 | |
---|
642 | def test_pts2rectangular(self): |
---|
643 | |
---|
644 | import time, os |
---|
645 | FN = 'xyatest' + str(time.time()) + '.xya' |
---|
646 | fid = open(FN, 'w') |
---|
647 | fid.write(' %s \n' %('elevation')) |
---|
648 | fid.write('%f %f %f\n' %(1,1,2) ) |
---|
649 | fid.write('%f %f %f\n' %(1,3,4) ) |
---|
650 | fid.write('%f %f %f\n' %(3,1,4) ) |
---|
651 | fid.close() |
---|
652 | |
---|
653 | points, triangles, boundary, attributes =\ |
---|
654 | pts2rectangular(FN, 4, 4, format = 'asc') |
---|
655 | |
---|
656 | |
---|
657 | data_coords = [ [1,1], [1,3], [3,1] ] |
---|
658 | z = [2, 4, 4] |
---|
659 | |
---|
660 | ref = fit_to_mesh(points, triangles, data_coords, z) |
---|
661 | |
---|
662 | #print attributes |
---|
663 | #print ref |
---|
664 | assert allclose(attributes, ref) |
---|
665 | |
---|
666 | os.remove(FN) |
---|
667 | |
---|
668 | |
---|
669 | #Tests of smoothing matrix |
---|
670 | def test_smoothing_matrix_one_triangle(self): |
---|
671 | from Numeric import dot |
---|
672 | a = [0.0, 0.0] |
---|
673 | b = [0.0, 2.0] |
---|
674 | c = [2.0,0.0] |
---|
675 | points = [a, b, c] |
---|
676 | |
---|
677 | vertices = [ [1,0,2] ] #bac |
---|
678 | |
---|
679 | interp = Interpolation(points, vertices) |
---|
680 | |
---|
681 | assert allclose(interp.get_D(), [[1, -0.5, -0.5], |
---|
682 | [-0.5, 0.5, 0], |
---|
683 | [-0.5, 0, 0.5]]) |
---|
684 | |
---|
685 | #Define f(x,y) = x |
---|
686 | f = array([0,0,2]) #Value at global vertex 2 |
---|
687 | |
---|
688 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
689 | # int 1 dx dy = area = 2 |
---|
690 | assert dot(dot(f, interp.get_D()), f) == 2 |
---|
691 | |
---|
692 | #Define f(x,y) = y |
---|
693 | f = array([0,2,0]) #Value at global vertex 1 |
---|
694 | |
---|
695 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
696 | # int 1 dx dy = area = 2 |
---|
697 | assert dot(dot(f, interp.get_D()), f) == 2 |
---|
698 | |
---|
699 | #Define f(x,y) = x+y |
---|
700 | f = array([0,2,2]) #Values at global vertex 1 and 2 |
---|
701 | |
---|
702 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
703 | # int 2 dx dy = 2*area = 4 |
---|
704 | assert dot(dot(f, interp.get_D()), f) == 4 |
---|
705 | |
---|
706 | |
---|
707 | |
---|
708 | def test_smoothing_matrix_more_triangles(self): |
---|
709 | from Numeric import dot |
---|
710 | |
---|
711 | a = [0.0, 0.0] |
---|
712 | b = [0.0, 2.0] |
---|
713 | c = [2.0,0.0] |
---|
714 | d = [0.0, 4.0] |
---|
715 | e = [2.0, 2.0] |
---|
716 | f = [4.0,0.0] |
---|
717 | |
---|
718 | points = [a, b, c, d, e, f] |
---|
719 | #bac, bce, ecf, dbe, daf, dae |
---|
720 | vertices = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
721 | |
---|
722 | interp = Interpolation(points, vertices) |
---|
723 | |
---|
724 | |
---|
725 | #assert allclose(interp.get_D(), [[1, -0.5, -0.5], |
---|
726 | # [-0.5, 0.5, 0], |
---|
727 | # [-0.5, 0, 0.5]]) |
---|
728 | |
---|
729 | #Define f(x,y) = x |
---|
730 | f = array([0,0,2,0,2,4]) #f evaluated at points a-f |
---|
731 | |
---|
732 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
733 | # int 1 dx dy = total area = 8 |
---|
734 | assert dot(dot(f, interp.get_D()), f) == 8 |
---|
735 | |
---|
736 | #Define f(x,y) = y |
---|
737 | f = array([0,2,0,4,2,0]) #f evaluated at points a-f |
---|
738 | |
---|
739 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
740 | # int 1 dx dy = area = 8 |
---|
741 | assert dot(dot(f, interp.get_D()), f) == 8 |
---|
742 | |
---|
743 | #Define f(x,y) = x+y |
---|
744 | f = array([0,2,2,4,4,4]) #f evaluated at points a-f |
---|
745 | |
---|
746 | #Check that int (df/dx)**2 + (df/dy)**2 dx dy = |
---|
747 | # int 2 dx dy = 2*area = 16 |
---|
748 | assert dot(dot(f, interp.get_D()), f) == 16 |
---|
749 | |
---|
750 | |
---|
751 | def test_fit_and_interpolation(self): |
---|
752 | from mesh import Mesh |
---|
753 | |
---|
754 | a = [0.0, 0.0] |
---|
755 | b = [0.0, 2.0] |
---|
756 | c = [2.0, 0.0] |
---|
757 | d = [0.0, 4.0] |
---|
758 | e = [2.0, 2.0] |
---|
759 | f = [4.0, 0.0] |
---|
760 | |
---|
761 | points = [a, b, c, d, e, f] |
---|
762 | #bac, bce, ecf, dbe, daf, dae |
---|
763 | triangles = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
764 | |
---|
765 | #Get (enough) datapoints |
---|
766 | data_points = [[ 0.66666667, 0.66666667], |
---|
767 | [ 1.33333333, 1.33333333], |
---|
768 | [ 2.66666667, 0.66666667], |
---|
769 | [ 0.66666667, 2.66666667], |
---|
770 | [ 0.0, 1.0], |
---|
771 | [ 0.0, 3.0], |
---|
772 | [ 1.0, 0.0], |
---|
773 | [ 1.0, 1.0], |
---|
774 | [ 1.0, 2.0], |
---|
775 | [ 1.0, 3.0], |
---|
776 | [ 2.0, 1.0], |
---|
777 | [ 3.0, 0.0], |
---|
778 | [ 3.0, 1.0]] |
---|
779 | |
---|
780 | interp = Interpolation(points, triangles, data_points, alpha=0.0) |
---|
781 | |
---|
782 | z = linear_function(data_points) |
---|
783 | answer = linear_function(points) |
---|
784 | |
---|
785 | f = interp.fit(z) |
---|
786 | |
---|
787 | #print "f",f |
---|
788 | #print "answer",answer |
---|
789 | assert allclose(f, answer) |
---|
790 | |
---|
791 | #Map back |
---|
792 | z1 = interp.interpolate(f) |
---|
793 | #print "z1\n", z1 |
---|
794 | #print "z\n",z |
---|
795 | assert allclose(z, z1) |
---|
796 | |
---|
797 | |
---|
798 | def test_smoothing_and_interpolation(self): |
---|
799 | |
---|
800 | a = [0.0, 0.0] |
---|
801 | b = [0.0, 2.0] |
---|
802 | c = [2.0, 0.0] |
---|
803 | d = [0.0, 4.0] |
---|
804 | e = [2.0, 2.0] |
---|
805 | f = [4.0, 0.0] |
---|
806 | |
---|
807 | points = [a, b, c, d, e, f] |
---|
808 | #bac, bce, ecf, dbe, daf, dae |
---|
809 | triangles = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
810 | |
---|
811 | #Get (too few!) datapoints |
---|
812 | data_points = [[ 0.66666667, 0.66666667], |
---|
813 | [ 1.33333333, 1.33333333], |
---|
814 | [ 2.66666667, 0.66666667], |
---|
815 | [ 0.66666667, 2.66666667]] |
---|
816 | |
---|
817 | z = linear_function(data_points) |
---|
818 | answer = linear_function(points) |
---|
819 | |
---|
820 | #Make interpolator with too few data points and no smoothing |
---|
821 | interp = Interpolation(points, triangles, data_points, alpha=0.0) |
---|
822 | #Must raise an exception |
---|
823 | try: |
---|
824 | f = interp.fit(z) |
---|
825 | except: |
---|
826 | pass |
---|
827 | |
---|
828 | #Now try with smoothing parameter |
---|
829 | interp = Interpolation(points, triangles, data_points, alpha=1.0e-13) |
---|
830 | |
---|
831 | f = interp.fit(z) |
---|
832 | #f will be different from answerr due to smoothing |
---|
833 | assert allclose(f, answer,atol=5) |
---|
834 | |
---|
835 | #Map back |
---|
836 | z1 = interp.interpolate(f) |
---|
837 | assert allclose(z, z1) |
---|
838 | |
---|
839 | |
---|
840 | |
---|
841 | def test_fit_and_interpolation_with_new_points(self): |
---|
842 | """Fit a surface to one set of points. Then interpolate that surface |
---|
843 | using another set of points. |
---|
844 | """ |
---|
845 | from mesh import Mesh |
---|
846 | |
---|
847 | |
---|
848 | #Setup mesh used to represent fitted function |
---|
849 | a = [0.0, 0.0] |
---|
850 | b = [0.0, 2.0] |
---|
851 | c = [2.0, 0.0] |
---|
852 | d = [0.0, 4.0] |
---|
853 | e = [2.0, 2.0] |
---|
854 | f = [4.0, 0.0] |
---|
855 | |
---|
856 | points = [a, b, c, d, e, f] |
---|
857 | #bac, bce, ecf, dbe, daf, dae |
---|
858 | triangles = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
859 | |
---|
860 | #Datapoints to fit from |
---|
861 | data_points1 = [[ 0.66666667, 0.66666667], |
---|
862 | [ 1.33333333, 1.33333333], |
---|
863 | [ 2.66666667, 0.66666667], |
---|
864 | [ 0.66666667, 2.66666667], |
---|
865 | [ 0.0, 1.0], |
---|
866 | [ 0.0, 3.0], |
---|
867 | [ 1.0, 0.0], |
---|
868 | [ 1.0, 1.0], |
---|
869 | [ 15, -17], #Outside mesh |
---|
870 | [ 1.0, 2.0], |
---|
871 | [ 1.0, 3.0], |
---|
872 | [ 2.0, 1.0], |
---|
873 | [ 3.0, 0.0], |
---|
874 | [ 3.0, 1.0]] |
---|
875 | |
---|
876 | #Fit surface to mesh |
---|
877 | interp = Interpolation(points, triangles, data_points1, alpha=0.0, |
---|
878 | precrop = True) |
---|
879 | z = linear_function(data_points1) #Example z-values |
---|
880 | f = interp.fit(z) #Fitted values at vertices |
---|
881 | |
---|
882 | |
---|
883 | |
---|
884 | #New datapoints where interpolated values are sought |
---|
885 | data_points2 = [[ 0.0, 0.0], |
---|
886 | [ 0.5, 0.5], |
---|
887 | [ 0.7, 0.7], |
---|
888 | [-13, 65], #Outside |
---|
889 | [ 1.0, 0.5], |
---|
890 | [ 2.0, 0.4], |
---|
891 | [ 2.8, 1.2]] |
---|
892 | |
---|
893 | |
---|
894 | |
---|
895 | #Build new A matrix based on new points (without precrop) |
---|
896 | interp.build_interpolation_matrix_A(data_points2, precrop = False) |
---|
897 | |
---|
898 | #Interpolate using fitted surface |
---|
899 | z1 = interp.interpolate(f) |
---|
900 | |
---|
901 | #import Numeric |
---|
902 | #data_points2 = Numeric.take(data_points2, interp.point_indices) |
---|
903 | |
---|
904 | #Desired result (OK for points inside) |
---|
905 | |
---|
906 | answer = linear_function(data_points2) |
---|
907 | import Numeric |
---|
908 | z1 = Numeric.take(z1, [0,1,2,4,5,6]) |
---|
909 | answer = Numeric.take(answer, [0,1,2,4,5,6]) |
---|
910 | assert allclose(z1, answer) |
---|
911 | |
---|
912 | #Build new A matrix based on new points (with precrop) |
---|
913 | interp.build_interpolation_matrix_A(data_points2, precrop = True) |
---|
914 | |
---|
915 | #Interpolate using fitted surface |
---|
916 | z1 = interp.interpolate(f) |
---|
917 | |
---|
918 | import Numeric |
---|
919 | data_points2 = Numeric.take(data_points2, interp.point_indices) |
---|
920 | |
---|
921 | #Desired result |
---|
922 | answer = linear_function(data_points2) |
---|
923 | assert allclose(z1, answer) |
---|
924 | |
---|
925 | |
---|
926 | |
---|
927 | def test_fit_and_interpolation_with_different_origins(self): |
---|
928 | """Fit a surface to one set of points. Then interpolate that surface |
---|
929 | using another set of points. |
---|
930 | This test tests situtaion where points and mesh belong to a different |
---|
931 | coordinate system as defined by origin. |
---|
932 | """ |
---|
933 | from mesh import Mesh |
---|
934 | |
---|
935 | #Setup mesh used to represent fitted function |
---|
936 | a = [0.0, 0.0] |
---|
937 | b = [0.0, 2.0] |
---|
938 | c = [2.0, 0.0] |
---|
939 | d = [0.0, 4.0] |
---|
940 | e = [2.0, 2.0] |
---|
941 | f = [4.0, 0.0] |
---|
942 | |
---|
943 | points = [a, b, c, d, e, f] |
---|
944 | #bac, bce, ecf, dbe, daf, dae |
---|
945 | triangles = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
946 | |
---|
947 | #Datapoints to fit from |
---|
948 | data_points1 = [[ 0.66666667, 0.66666667], |
---|
949 | [ 1.33333333, 1.33333333], |
---|
950 | [ 2.66666667, 0.66666667], |
---|
951 | [ 0.66666667, 2.66666667], |
---|
952 | [ 0.0, 1.0], |
---|
953 | [ 0.0, 3.0], |
---|
954 | [ 1.0, 0.0], |
---|
955 | [ 1.0, 1.0], |
---|
956 | [ 1.0, 2.0], |
---|
957 | [ 1.0, 3.0], |
---|
958 | [ 2.0, 1.0], |
---|
959 | [ 3.0, 0.0], |
---|
960 | [ 3.0, 1.0]] |
---|
961 | |
---|
962 | |
---|
963 | #First check that things are OK when using same origin |
---|
964 | mesh_origin = (56, 290000, 618000) #zone, easting, northing |
---|
965 | data_origin = (56, 290000, 618000) #zone, easting, northing |
---|
966 | |
---|
967 | |
---|
968 | #Fit surface to mesh |
---|
969 | interp = Interpolation(points, triangles, data_points1, |
---|
970 | alpha=0.0, |
---|
971 | data_origin = data_origin, |
---|
972 | mesh_origin = mesh_origin) |
---|
973 | |
---|
974 | z = linear_function(data_points1) #Example z-values |
---|
975 | f = interp.fit(z) #Fitted values at vertices |
---|
976 | |
---|
977 | |
---|
978 | #New datapoints where interpolated values are sought |
---|
979 | data_points2 = [[ 0.0, 0.0], |
---|
980 | [ 0.5, 0.5], |
---|
981 | [ 0.7, 0.7], |
---|
982 | [ 1.0, 0.5], |
---|
983 | [ 2.0, 0.4], |
---|
984 | [ 2.8, 1.2]] |
---|
985 | |
---|
986 | |
---|
987 | #Build new A matrix based on new points |
---|
988 | interp.build_interpolation_matrix_A(data_points2) |
---|
989 | |
---|
990 | #Interpolate using fitted surface |
---|
991 | z1 = interp.interpolate(f) |
---|
992 | |
---|
993 | #Desired result |
---|
994 | answer = linear_function(data_points2) |
---|
995 | assert allclose(z1, answer) |
---|
996 | |
---|
997 | |
---|
998 | ############################################## |
---|
999 | |
---|
1000 | #Then check situtaion where points are relative to a different |
---|
1001 | #origin (same zone, though, until we figure that out (FIXME)) |
---|
1002 | |
---|
1003 | mesh_origin = (56, 290000, 618000) #zone, easting, northing |
---|
1004 | data_origin = (56, 10000, 10000) #zone, easting, northing |
---|
1005 | |
---|
1006 | #Shift datapoints according to new origin |
---|
1007 | |
---|
1008 | for k in range(len(data_points1)): |
---|
1009 | data_points1[k][0] += mesh_origin[1] - data_origin[1] |
---|
1010 | data_points1[k][1] += mesh_origin[2] - data_origin[2] |
---|
1011 | |
---|
1012 | for k in range(len(data_points2)): |
---|
1013 | data_points2[k][0] += mesh_origin[1] - data_origin[1] |
---|
1014 | data_points2[k][1] += mesh_origin[2] - data_origin[2] |
---|
1015 | |
---|
1016 | |
---|
1017 | |
---|
1018 | #Fit surface to mesh |
---|
1019 | interp = Interpolation(points, triangles, data_points1, |
---|
1020 | alpha=0.0, |
---|
1021 | data_origin = data_origin, |
---|
1022 | mesh_origin = mesh_origin) |
---|
1023 | |
---|
1024 | f1 = interp.fit(z) #Fitted values at vertices (using same z as before) |
---|
1025 | |
---|
1026 | assert allclose(f,f1), 'Fit should have been unaltered' |
---|
1027 | |
---|
1028 | |
---|
1029 | #Build new A matrix based on new points |
---|
1030 | interp.build_interpolation_matrix_A(data_points2) |
---|
1031 | |
---|
1032 | #Interpolate using fitted surface |
---|
1033 | z1 = interp.interpolate(f) |
---|
1034 | assert allclose(z1, answer) |
---|
1035 | |
---|
1036 | |
---|
1037 | ######################################################### |
---|
1038 | #Finally try to relate data_points2 to new origin without |
---|
1039 | #rebuilding matrix |
---|
1040 | |
---|
1041 | data_origin = (56, 2000, 2000) #zone, easting, northing |
---|
1042 | for k in range(len(data_points2)): |
---|
1043 | data_points2[k][0] += 8000 |
---|
1044 | data_points2[k][1] += 8000 |
---|
1045 | |
---|
1046 | #Build new A matrix based on new points |
---|
1047 | interp.build_interpolation_matrix_A(data_points2, |
---|
1048 | data_origin = data_origin) |
---|
1049 | |
---|
1050 | #Interpolate using fitted surface |
---|
1051 | z1 = interp.interpolate(f) |
---|
1052 | assert allclose(z1, answer) |
---|
1053 | |
---|
1054 | |
---|
1055 | |
---|
1056 | |
---|
1057 | def test_fit_to_mesh_file(self): |
---|
1058 | from load_mesh.loadASCII import mesh_file_to_mesh_dictionary, \ |
---|
1059 | export_triangulation_file |
---|
1060 | import tempfile |
---|
1061 | import os |
---|
1062 | |
---|
1063 | # create a .tsh file, no user outline |
---|
1064 | mesh_dic = {} |
---|
1065 | mesh_dic['vertices'] = [[0.0, 0.0], |
---|
1066 | [0.0, 5.0], |
---|
1067 | [5.0, 0.0]] |
---|
1068 | mesh_dic['triangles'] = [[0, 2, 1]] |
---|
1069 | mesh_dic['segments'] = [[0, 1], [2, 0], [1, 2]] |
---|
1070 | mesh_dic['triangle_tags'] = [['']] |
---|
1071 | mesh_dic['vertex_attributes'] = [[], [], []] |
---|
1072 | mesh_dic['vertiex_attribute_titles'] = [] |
---|
1073 | mesh_dic['triangle_neighbors'] = [[-1, -1, -1]] |
---|
1074 | mesh_dic['segment_tags'] = ['external', |
---|
1075 | 'external', |
---|
1076 | 'external'] |
---|
1077 | mesh_file = tempfile.mktemp(".tsh") |
---|
1078 | export_triangulation_file(mesh_file,mesh_dic) |
---|
1079 | |
---|
1080 | # create an .xya file |
---|
1081 | point_file = tempfile.mktemp(".xya") |
---|
1082 | fd = open(point_file,'w') |
---|
1083 | fd.write("elevation, stage \n 1.0, 1.0,2.,4 \n 1.0, 3.0,4,8 \n 3.0,1.0,4.,8 \n") |
---|
1084 | fd.close() |
---|
1085 | |
---|
1086 | mesh_output_file = "new_trianlge.tsh" |
---|
1087 | fit_to_mesh_file(mesh_file, |
---|
1088 | point_file, |
---|
1089 | mesh_output_file, |
---|
1090 | alpha = 0.0) |
---|
1091 | # load in the .tsh file we just wrote |
---|
1092 | mesh_dic = mesh_file_to_mesh_dictionary(mesh_output_file) |
---|
1093 | #print "mesh_dic",mesh_dic |
---|
1094 | ans =[[0.0, 0.0], |
---|
1095 | [5.0, 10.0], |
---|
1096 | [5.0,10.0]] |
---|
1097 | assert allclose(mesh_dic['vertex_attributes'],ans) |
---|
1098 | |
---|
1099 | self.failUnless(mesh_dic['vertex_attribute_titles'] == |
---|
1100 | ['elevation','stage'], |
---|
1101 | 'test_fit_to_mesh_file failed') |
---|
1102 | |
---|
1103 | #clean up |
---|
1104 | os.remove(mesh_file) |
---|
1105 | os.remove(point_file) |
---|
1106 | os.remove(mesh_output_file) |
---|
1107 | |
---|
1108 | def test_fit_to_mesh_fileII(self): |
---|
1109 | from load_mesh.loadASCII import mesh_file_to_mesh_dictionary, \ |
---|
1110 | export_triangulation_file |
---|
1111 | import tempfile |
---|
1112 | import os |
---|
1113 | |
---|
1114 | # create a .tsh file, no user outline |
---|
1115 | mesh_dic = {} |
---|
1116 | mesh_dic['vertices'] = [[0.0, 0.0], |
---|
1117 | [0.0, 5.0], |
---|
1118 | [5.0, 0.0]] |
---|
1119 | mesh_dic['triangles'] = [[0, 2, 1]] |
---|
1120 | mesh_dic['segments'] = [[0, 1], [2, 0], [1, 2]] |
---|
1121 | mesh_dic['triangle_tags'] = [['']] |
---|
1122 | mesh_dic['vertex_attributes'] = [[1,2], [1,2], [1,2]] |
---|
1123 | mesh_dic['vertex_attribute_titles'] = ['density', 'temp'] |
---|
1124 | mesh_dic['triangle_neighbors'] = [[-1, -1, -1]] |
---|
1125 | mesh_dic['segment_tags'] = ['external', |
---|
1126 | 'external', |
---|
1127 | 'external'] |
---|
1128 | mesh_file = tempfile.mktemp(".tsh") |
---|
1129 | export_triangulation_file(mesh_file,mesh_dic) |
---|
1130 | |
---|
1131 | # create an .xya file |
---|
1132 | point_file = tempfile.mktemp(".xya") |
---|
1133 | fd = open(point_file,'w') |
---|
1134 | fd.write("elevation, stage \n 1.0, 1.0,2.,4 \n 1.0, 3.0,4,8 \n 3.0,1.0,4.,8 \n") |
---|
1135 | fd.close() |
---|
1136 | |
---|
1137 | mesh_output_file = "new_triangle.tsh" |
---|
1138 | fit_to_mesh_file(mesh_file, |
---|
1139 | point_file, |
---|
1140 | mesh_output_file, |
---|
1141 | alpha = 0.0) |
---|
1142 | # load in the .tsh file we just wrote |
---|
1143 | mesh_dic = mesh_file_to_mesh_dictionary(mesh_output_file) |
---|
1144 | |
---|
1145 | assert allclose(mesh_dic['vertex_attributes'], |
---|
1146 | [[1.0, 2.0,0.0, 0.0], |
---|
1147 | [1.0, 2.0,5.0, 10.0], |
---|
1148 | [1.0, 2.0,5.0,10.0]]) |
---|
1149 | |
---|
1150 | self.failUnless(mesh_dic['vertex_attribute_titles'] == |
---|
1151 | ['density', 'temp','elevation','stage'], |
---|
1152 | 'test_fit_to_mesh_file failed') |
---|
1153 | |
---|
1154 | #clean up |
---|
1155 | os.remove(mesh_file) |
---|
1156 | os.remove(mesh_output_file) |
---|
1157 | os.remove(point_file) |
---|
1158 | |
---|
1159 | #------------------------------------------------------------- |
---|
1160 | if __name__ == "__main__": |
---|
1161 | suite = unittest.makeSuite(TestCase,'test') |
---|
1162 | |
---|
1163 | #suite = unittest.makeSuite(TestCase,'test_arbitrary_datapoints') |
---|
1164 | runner = unittest.TextTestRunner(verbosity=1) |
---|
1165 | runner.run(suite) |
---|
1166 | |
---|
1167 | |
---|
1168 | |
---|
1169 | |
---|
1170 | |
---|
1171 | |
---|