| 1 | """ |
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| 2 | Generates ascii grids of nominated areas - |
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| 3 | Input: sww file from run_model.py |
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| 4 | area for grids from project.py |
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| 5 | Outputs: ascii grids of specified variables |
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| 6 | Stored in the 'outputs_dir' folder for respective .sww file |
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| 7 | |
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| 8 | Note: |
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| 9 | If producing a grid for the enitre extent cellsize should be greater than 30m |
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| 10 | If producing grids for inundation area resolution should be greater than mesh (ie ~20m) |
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| 11 | """ |
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| 12 | |
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| 13 | import project, os |
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| 14 | import sys |
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| 15 | from os.path import join |
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| 16 | from anuga.lib.maxasc.maxasc import MaxAsc |
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| 17 | from anuga.shallow_water.data_manager import convert_dem_from_ascii2netcdf, dem2pts |
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| 18 | from anuga.shallow_water.data_manager import sww2dem |
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| 19 | from os import sep |
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| 20 | |
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| 21 | directory = project.output_folder |
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| 22 | #Folders that contain the sww files of interest found in anuga/outputs |
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| 23 | time_dir1 = '20090714_162136_run_final_0_58260_None_kvanputt' |
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| 24 | time_dir2 = '20090714_162041_run_final_0.8_58292_None_kvanputt' |
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| 25 | time_dir3 = '20090714_161944_run_final_0.8_58280_None_kvanputt' |
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| 26 | time_dir4 = '20090714_161740_run_final_0.8_58260_None_kvanputt' |
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| 27 | |
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| 28 | time_dirs = [time_dir1, time_dir2, time_dir3, time_dir4] |
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| 29 | |
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| 30 | # sww filename extensions ie. hobart_time_17640_0.sww, input into list 17640 |
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| 31 | # make sure numbers are in sequential order |
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| 32 | times = [17640, 35280, 52920] |
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| 33 | |
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| 34 | #Modify the cellsize value to set the size of the raster you require |
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| 35 | #Take into account mesh size when aplying this paramater |
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| 36 | cellsize = 20 #250 |
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| 37 | |
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| 38 | #Now set the timestep at which you want the raster generated. |
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| 39 | #Either set the actual timestep required or use 'None' to indicate that |
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| 40 | #you want the maximum values in the raster over all timesteps |
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| 41 | timestep = None #0 |
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| 42 | |
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| 43 | # Set the special areas of interest. If none, do: area=['All'] |
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| 44 | # Areas identified below are specified by cooridinates in project.py |
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| 45 | |
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| 46 | area = ['Hobart', 'NW', 'South'] |
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| 47 | #area = ['All'] |
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| 48 | |
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| 49 | # one or more key strings from var_equations below |
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| 50 | var = ['depth', 'speed'] |
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| 51 | |
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| 52 | ###### |
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| 53 | # Define allowed variable names and associated equations to generate values. |
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| 54 | # This would not normally change. |
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| 55 | ###### |
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| 56 | var_equations = {'stage': 'stage', |
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| 57 | 'momentum': '(xmomentum**2 + ymomentum**2)**0.5', |
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| 58 | 'depth': 'stage-elevation', |
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| 59 | 'speed': '(xmomentum**2 + ymomentum**2)**0.5/(stage-elevation+1.e-6)', |
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| 60 | 'elevation': 'elevation' } |
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| 61 | |
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| 62 | |
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| 63 | ###### |
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| 64 | # Start script, running through variables, area, folder, sww file (determine by times) |
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| 65 | # Then creates a maximum asci if there is more than one sww file |
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| 66 | ###### |
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| 67 | |
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| 68 | for which_var in var: |
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| 69 | if which_var not in var_equations: |
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| 70 | print 'Unrecognized variable name: %s' % which_var |
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| 71 | break |
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| 72 | |
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| 73 | for which_area in area: |
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| 74 | if which_area == 'All': |
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| 75 | easting_min = None |
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| 76 | easting_max = None |
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| 77 | northing_min = None |
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| 78 | northing_max = None |
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| 79 | else: |
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| 80 | try: |
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| 81 | easting_min = eval('project.xmin%s' % which_area) |
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| 82 | easting_max = eval('project.xmax%s' % which_area) |
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| 83 | northing_min = eval('project.ymin%s' % which_area) |
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| 84 | northing_max = eval('project.ymax%s' % which_area) |
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| 85 | except AttributeError: |
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| 86 | print 'Unrecognized area name: %s' % which_area |
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| 87 | break |
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| 88 | |
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| 89 | for time_dir in time_dirs: |
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| 90 | names = [join(directory, time_dir, project.scenario_name)] |
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| 91 | for time in times: |
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| 92 | names.append(join(directory, time_dir, project.scenario_name)+ '_time_' + str(time) + '_0') |
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| 93 | |
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| 94 | asc_name = [] |
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| 95 | |
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| 96 | for name in names: |
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| 97 | outname = name + '_' + which_area + '_' + which_var |
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| 98 | quantityname = var_equations[which_var] |
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| 99 | |
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| 100 | print 'start sww2dem: time_dir=%s' % time_dir |
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| 101 | print 'name=%s' % name |
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| 102 | sww2dem(name, basename_out = outname, |
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| 103 | quantity = quantityname, |
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| 104 | timestep = timestep, |
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| 105 | cellsize = cellsize, |
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| 106 | easting_min = easting_min, |
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| 107 | easting_max = easting_max, |
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| 108 | northing_min = northing_min, |
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| 109 | northing_max = northing_max, |
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| 110 | reduction = max, |
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| 111 | verbose = True, |
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| 112 | format = 'asc') |
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| 113 | |
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| 114 | asc_name.append(outname + '.asc') |
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| 115 | |
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| 116 | if len(names) >1: |
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| 117 | maxasc_outname = join(directory, time_dir, project.scenario_name)+'_'+which_area+'_'+which_var+'_max.asc' |
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| 118 | |
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| 119 | print 'max asc outname ', maxasc_outname |
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| 120 | print 'asc_name ', str(asc_name) |
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| 121 | |
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| 122 | MaxAsc(maxasc_outname, asc_name) |
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| 123 | else: |
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| 124 | print 'Only one sww file, no Max file required' |
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