1 | from anuga.utilities.numerical_tools import ensure_numeric |
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2 | from Scientific.IO.NetCDF import NetCDFFile |
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3 | from Numeric import asarray,transpose,sqrt,argmax,argmin,arange,Float,\ |
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4 | compress,zeros,fabs,allclose,ones |
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5 | from anuga.utilities.polygon import inside_polygon,read_polygon |
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6 | from os import sep |
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7 | from time import localtime, strftime, gmtime |
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8 | from anuga.shallow_water.data_manager import urs2sts,create_sts_boundary |
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9 | import os |
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10 | |
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11 | def create_sts_boundary_order_file(urs_filename,order_filename,sts_filename,verbose=False): |
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12 | """ |
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13 | Note This is not a robust algorithm. Be Careful when applying that |
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14 | polygon does not intersect itself and that resulting boundary actually |
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15 | follows the path it is supposed too. |
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16 | """ |
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17 | from anuga.shallow_water.data_manager import read_mux2_py |
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18 | times, y, x, elevation, quantity, starttime = read_mux2_py([urs_filename],weights=ones(1,Float)) |
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19 | |
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20 | #find indices of the southernmost gauges |
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21 | #if more than one find gauges furthest left |
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22 | #will fail if domain crosses 180 degrees |
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23 | #i.e. if left most most point is not west i.e x=1 and other points 170<x<180 |
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24 | #or even in utm just a diffenet zone |
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25 | south=min(y) |
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26 | south_indices=compress(y-south<1e-6,arange(len(y))) |
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27 | west=x[south_indices[0]] |
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28 | west_index=south_indices[0] |
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29 | if south_indices>1: |
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30 | #find most western gauge |
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31 | for i,south_index in enumerate(south_indices[1:]): |
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32 | if x[south_index]<west: |
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33 | west_index=south_index |
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34 | |
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35 | n=len(x) |
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36 | boundary=zeros((n,2),Float) |
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37 | indices=arange(n).tolist() |
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38 | boundary[0][0]=x[west_index] |
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39 | boundary[0][1]=y[west_index] |
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40 | indices.remove(west_index) |
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41 | order=[] |
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42 | for i in range(n-1): |
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43 | min_dist=1e12 |
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44 | for j,k in enumerate(indices): |
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45 | dist=sqrt((boundary[i][0]-x[k])**2+(boundary[i][1]-y[k])**2) |
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46 | if dist<min_dist: |
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47 | min_dist=dist |
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48 | index=k |
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49 | elif fabs(dist-min_dist)<1e-6: |
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50 | msg='Two or more points are equal distance apart. Please resolve' |
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51 | raise msg |
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52 | indices.remove(index) |
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53 | boundary[i+1][0]=x[index] |
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54 | boundary[i+1][1]=y[index] |
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55 | order.append(index) |
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56 | #ensure boundary is a polygon i.e no intesections |
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57 | #e.g. |
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58 | #msg='Boundary is not a regular polygon. Intersections found' |
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59 | #assert boundary.is_polygon, msg |
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60 | |
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61 | #So far i cannot tell if the wrong point is closer. |
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62 | |
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63 | boundary=ensure_numeric(boundary) |
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64 | from anuga.coordinate_transforms import redfearn,convert_from_latlon_to_utm |
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65 | boundary_utm,zone=convert_from_latlon_to_utm(longitudes=list(boundary[:,0]),latitudes=list(boundary[:,1])) |
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66 | |
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67 | d="," |
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68 | fid=open(order_filename,'w') |
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69 | header='index, longitude, latitude\n' |
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70 | fid.write(header) |
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71 | line=str(west_index)+d+str(x[west_index])+d+\ |
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72 | str(y[west_index])+"\n" |
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73 | fid.write(line) |
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74 | for i in order: |
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75 | line=str(i)+d+str(x[i])+d+\ |
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76 | str(y[i])+"\n" |
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77 | fid.write(line) |
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78 | fid.close() |
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79 | return boundary,boundary_utm |
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80 | |
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81 | ###################### |
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82 | # Domain definitions # |
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83 | ###################### |
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84 | |
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85 | # Bathymetry and topography filenames |
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86 | dir='data' |
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87 | |
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88 | time = strftime('%Y%m%d_%H%M%S',localtime()) #gets time for new dir |
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89 | poor_combined_dir_name = dir+sep+'poor_phuket_bathymetry' |
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90 | good_combined_dir_name = dir+sep+'good_phuket_bathymetry' |
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91 | meshname = 'phuket_mesh' |
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92 | mesh_elevname = 'phuket_mesh_elev' |
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93 | boundary_most_in = dir+sep+'out' |
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94 | #boundary_most_out = dir+sep+'most_boundary_condition' |
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95 | boundary_most_out = dir+sep+'tide_most_boundary_condition' |
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96 | |
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97 | dir='mesh_polygons' |
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98 | extent = 'extent.csv' |
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99 | patong_bay_polygon = read_polygon(dir+sep+'patong_bay_polygon.csv') |
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100 | |
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101 | tide=0.35 |
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102 | |
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103 | ###################################### |
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104 | # Create urs boundary from mux2files # |
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105 | ###################################### |
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106 | urs_filename='polyline' |
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107 | base_name='tide_polyline' |
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108 | order_filename='boxingday_boundary_order.txt' |
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109 | |
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110 | # Create ordering file |
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111 | # Usually this would be provided before hand |
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112 | boundary,boundary_utm=create_sts_boundary_order_file(urs_filename+'-z-mux2',order_filename,base_name,verbose=False) |
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113 | |
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114 | # Create ordered sts file |
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115 | #if not os.path.exists(base_name+'.sts'): |
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116 | print 'creating sts file' |
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117 | urs2sts(urs_filename,basename_out=base_name, |
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118 | ordering_filename=order_filename, |
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119 | mean_stage=tide, |
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120 | verbose=True) |
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121 | #else: |
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122 | # print 'sts file exists' |
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123 | print 'done' |
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124 | |
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125 | # Read in boundary from ordered sts file |
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126 | urs_boundary=create_sts_boundary(base_name) |
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127 | |
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128 | # Checks that the boundary read from the sts file is the same as the one |
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129 | # defined by the function create_sts_boundary_order_file |
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130 | assert allclose(boundary_utm,urs_boundary) |
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131 | |
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132 | ############################################################# |
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133 | # Add urs boundary segment to user defined boundary polygon # |
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134 | ############################################################# |
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135 | |
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136 | # Read in specific user defined boundary |
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137 | dir='mesh_polygons' |
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138 | extent = 'extent.csv' |
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139 | user_boundary_polygon = read_polygon(dir+sep+extent) |
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140 | |
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141 | # The following is specific to this scenario |
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142 | indices=inside_polygon(urs_boundary, user_boundary_polygon, closed=True, verbose=False) |
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143 | bounding_polygon=[] |
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144 | for i in indices[:-2]: |
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145 | #disregard last two entries because they are not on boundary |
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146 | bounding_polygon.append(urs_boundary[i]) |
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147 | |
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148 | # Append clipped sts boundary to user defined domain boundary |
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149 | bounding_polygon.extend(user_boundary_polygon[2:len(user_boundary_polygon)]) |
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150 | |
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151 | ############################### |
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152 | # Interior region definitions # |
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153 | ############################### |
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154 | |
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155 | contour20m = read_polygon(dir+sep+'20m.csv') |
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156 | contour20m[0][1]+=3000 |
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157 | contour20m[-2][0]+=3000 |
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158 | contour20m[-2][1]-=13000 |
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159 | contour20m[-1][1]+=9000 |
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160 | patong = read_polygon(dir+sep+'patong.csv') |
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161 | bay = read_polygon(dir+sep+'bay.csv') |
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162 | |
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163 | ########################################## |
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164 | # Plot urs boundary and internal regions # |
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165 | ########################################## |
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166 | |
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167 | plot=False |
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168 | if plot: |
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169 | from pylab import plot,show,hold |
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170 | bounding_polygon=ensure_numeric(bounding_polygon)#for plotting only |
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171 | #boundary=ensure_numeric(boundary) |
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172 | #plot(boundary[:,0],boundary[:,1],'o') |
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173 | plot(bounding_polygon[:,0],bounding_polygon[:,1],'o') |
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174 | plot(bounding_polygon[:,0],bounding_polygon[:,1]) |
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175 | contour20m = ensure_numeric(contour20m) |
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176 | plot(contour20m[:,0],contour20m[:,1]) |
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177 | patong=ensure_numeric(patong) |
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178 | plot(patong[:,0],patong[:,1]) |
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179 | show() |
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180 | |
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181 | |
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182 | ####################### |
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183 | # For MOST SIMULATION # |
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184 | ####################### |
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185 | east = 97.7 |
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186 | west = 96.7 |
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187 | north = 9.0 |
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188 | south = 5.9 |
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189 | |
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190 | |
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191 | bay_west = 417348.0 |
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192 | bay_east = 425656.0 |
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193 | bay_south = 870565.0 |
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194 | bay_north = 877008.0 |
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195 | |
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196 | bay_grid_poly=[[bay_west,bay_south],[bay_west,bay_north],[bay_east,bay_north],[bay_east,bay_south]] |
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197 | |
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198 | check_ferret_extent=False |
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199 | if check_ferret_extent: |
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200 | east = east |
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201 | west = west |
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202 | north = north |
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203 | south = south |
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204 | |
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205 | from anuga.coordinate_transforms.redfearn import redfearn |
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206 | zone0, easting0, northing0 = redfearn(north,east) |
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207 | print zone0,easting0,northing0 |
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208 | zone1, easting1, northing1 = redfearn(south,east) |
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209 | print zone1,easting1,northing1 |
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210 | zone2, easting2, northing2 = redfearn(south,west) |
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211 | print zone2,easting2,northing2 |
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212 | zone3, easting3, northing3 = redfearn(north,west) |
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213 | print zone3,easting3,northing3 |
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214 | |
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215 | assert zone0==zone1==zone2==zone3 |
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216 | |
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217 | ferret_polygon=[[easting0, northing0],[easting1, northing1],[easting2, northing2],[easting3, northing3]] |
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218 | points_outside=[] |
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219 | from anuga.utilities.polygon import is_inside_polygon |
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220 | for i,point in enumerate(bounding_polygon): |
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221 | if not is_inside_polygon(point, ferret_polygon, closed=True, verbose=False): |
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222 | print 'point %d = (%f,%f) not inside boundary'%(i,point[0],point[1]) |
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223 | points_outside.append(point) |
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224 | |
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225 | from pylab import plot,show |
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226 | ferret_polygon=ensure_numeric(ferret_polygon) |
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227 | points_outside=ensure_numeric(points_outside) |
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228 | plot(ferret_polygon[:,0],ferret_polygon[:,1]) |
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229 | plot(points_outside[:,0],points_outside[:,1],'o') |
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230 | show() |
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231 | print ferret_polygon[0] |
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232 | print ferret_polygon[1] |
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233 | print ferret_polygon[2] |
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234 | print ferret_polygon[3] |
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235 | print points_outside |
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236 | |
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