1 | """Verify that simulation produced by ANUGA compares to published |
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2 | validation timeseries ch5, ch7 and ch9 as well as the boundary timeseries. |
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3 | |
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4 | RMS norm is printed and plots are produced. |
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5 | """ |
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6 | |
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7 | import numpy as num |
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8 | from Scientific.IO.NetCDF import NetCDFFile |
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9 | |
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10 | from anuga.abstract_2d_finite_volumes.util import file_function |
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11 | from anuga.utilities.numerical_tools import\ |
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12 | ensure_numeric, cov, get_machine_precision |
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13 | |
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14 | import project |
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15 | |
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16 | try: |
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17 | from pylab import ion, hold, plot, title, legend, xlabel, ylabel, savefig |
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18 | except: |
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19 | plotting = False |
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20 | else: |
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21 | plotting = True |
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22 | |
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23 | print 'plotting', plotting |
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24 | #plotting = False |
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25 | |
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26 | #------------------------- |
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27 | # Basic data |
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28 | #------------------------- |
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29 | |
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30 | finaltime = 22.5 |
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31 | timestep = 0.05 |
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32 | |
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33 | gauge_locations = [[0.000, 1.696]] # Boundary gauge |
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34 | gauge_locations += [[4.521, 1.196], [4.521, 1.696], [4.521, 2.196]] #Ch 5-7-9 |
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35 | gauge_names = ['Boundary', 'ch5', 'ch7', 'ch9'] |
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36 | |
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37 | validation_data = {} |
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38 | for key in gauge_names: |
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39 | validation_data[key] = [] |
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40 | |
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41 | |
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42 | #------------------------- |
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43 | # Read validation dataa |
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44 | #------------------------- |
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45 | |
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46 | print 'Reading', project.boundary_filename |
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47 | fid = NetCDFFile(project.boundary_filename, 'r') |
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48 | input_time = fid.variables['time'][:] |
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49 | validation_data['Boundary'] = fid.variables['stage'][:] |
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50 | |
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51 | reference_time = [] |
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52 | fid = open(project.validation_filename) |
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53 | lines = fid.readlines() |
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54 | fid.close() |
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55 | |
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56 | for i, line in enumerate(lines[1:]): |
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57 | if i == len(input_time): break |
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58 | |
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59 | fields = line.split() |
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60 | |
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61 | reference_time.append(float(fields[0])) # Record reference time |
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62 | for j, key in enumerate(gauge_names[1:]): # Omit boundary gauge |
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63 | value = float(fields[1:][j]) # Omit time |
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64 | validation_data[key].append(value/100) # Convert cm2m |
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65 | |
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66 | |
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67 | # Checks |
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68 | assert reference_time[0] == 0.0 |
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69 | assert reference_time[-1] == finaltime |
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70 | assert num.allclose(reference_time, input_time) |
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71 | |
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72 | for key in gauge_names: |
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73 | validation_data[key] = ensure_numeric(validation_data[key]) |
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74 | |
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75 | |
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76 | #-------------------------------------------------- |
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77 | # Read and interpolate model output |
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78 | #-------------------------------------------------- |
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79 | |
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80 | import sys |
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81 | if len(sys.argv) > 1: |
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82 | sww_filename = sys.argv[1] |
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83 | else: |
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84 | sww_filename = project.output_filename |
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85 | |
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86 | f = file_function(sww_filename, |
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87 | quantities='stage', |
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88 | interpolation_points=gauge_locations, |
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89 | use_cache=True, |
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90 | verbose=True) |
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91 | |
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92 | #-------------------------------------------------- |
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93 | # Check max runup |
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94 | #-------------------------------------------------- |
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95 | |
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96 | from anuga.shallow_water.data_manager import get_maximum_inundation_elevation |
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97 | from anuga.shallow_water.data_manager import get_maximum_inundation_location |
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98 | from anuga.utilities.polygon import is_inside_polygon |
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99 | |
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100 | q = get_maximum_inundation_elevation(sww_filename) |
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101 | loc = get_maximum_inundation_location(sww_filename) |
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102 | |
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103 | print 'Max runup elevation: ', q |
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104 | print 'Max runup elevation (scaled by 400): ', q*400 |
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105 | print 'Max runup location: ', loc |
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106 | |
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107 | #from create_okushiri import gulleys |
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108 | #assert is_inside_polygon(loc, gulleys) |
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109 | |
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110 | |
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111 | |
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112 | #-------------------------------------------------- |
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113 | # Compare model output to validation data |
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114 | #-------------------------------------------------- |
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115 | |
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116 | eps = get_machine_precision() |
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117 | for k, name in enumerate(gauge_names): |
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118 | sqsum = 0 |
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119 | denom = 0 |
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120 | model = [] |
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121 | print |
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122 | print 'Validating ' + name |
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123 | observed_timeseries = validation_data[name] |
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124 | for i, t in enumerate(reference_time): |
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125 | model.append(f(t, point_id=k)[0]) |
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126 | |
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127 | |
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128 | # Covariance measures |
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129 | res = cov(observed_timeseries, model) |
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130 | print 'Covariance = %.18e' %res |
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131 | |
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132 | # Difference measures |
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133 | res = sum(abs(observed_timeseries-model))/len(model) |
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134 | print 'Accumulated difference = %.18e' %res |
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135 | |
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136 | |
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137 | # Extrema |
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138 | res = abs(max(observed_timeseries)-max(model)) |
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139 | print 'Difference in maxima = %.18e' %res |
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140 | |
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141 | |
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142 | res = abs(min(observed_timeseries)-min(model)) |
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143 | print 'Difference in minima = %.18e' %res |
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144 | |
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145 | # Locations of extrema |
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146 | i0 = num.argmax(observed_timeseries) |
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147 | i1 = num.argmax(model) |
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148 | res = abs(reference_time[i1] - reference_time[i0]) |
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149 | print 'Timelag between maxima = %.18e' %res |
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150 | |
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151 | |
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152 | i0 = num.argmin(observed_timeseries) |
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153 | i1 = num.argmin(model) |
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154 | res = abs(reference_time[i1] - reference_time[i0]) |
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155 | print 'Timelag between minima = %.18e' %res |
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156 | |
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157 | |
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158 | |
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159 | |
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160 | if plotting is True: |
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161 | ion() |
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162 | hold(False) |
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163 | |
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164 | plot(reference_time, validation_data[name], 'r-', |
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165 | reference_time, model, 'k-') |
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166 | title('Gauge %s' %name) |
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167 | xlabel('time(s)') |
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168 | ylabel('stage (m)') |
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169 | legend(('Observed', 'Modelled'), shadow=True, loc='upper left') |
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170 | savefig(name, dpi = 300) |
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171 | |
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172 | raw_input('Next') |
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173 | |
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174 | |
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175 | |
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