| 1 | """Read in sww file, interpolate at specified locations and plot time series |
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| 2 | |
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| 3 | """ |
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| 4 | |
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| 5 | import project |
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| 6 | from pyvolution.util import file_function |
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| 7 | from coordinate_transforms.redfearn import degminsec2decimal_degrees, redfearn |
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| 8 | from pylab import * |
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| 9 | from matplotlib.ticker import MultipleLocator, FormatStrFormatter |
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| 10 | |
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| 11 | swwfile = project.outputname + '.sww' |
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| 12 | |
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| 13 | |
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| 14 | |
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| 15 | #Time interval to plot |
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| 16 | tmin = 13000 |
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| 17 | tmax = 21000 |
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| 18 | |
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| 19 | def get_gauges_from_file(filename): |
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| 20 | fid = open(filename) |
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| 21 | lines = fid.readlines() |
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| 22 | fid.close() |
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| 23 | |
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| 24 | gauges = [] |
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| 25 | gaugelocation = [] |
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| 26 | for line in lines[1:]: |
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| 27 | fields = line.split(',') |
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| 28 | # my gauge file set up as locationname, easting, northing |
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| 29 | location = fields[0] |
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| 30 | easting = float(fields[1]) |
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| 31 | northing = float(fields[2]) |
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| 32 | #z, easting, northing = redfearn(lat, lon) |
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| 33 | gauges.append([easting, northing]) |
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| 34 | gaugelocation.append(location) |
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| 35 | |
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| 36 | #Return gauges and raw data for subsequent storage |
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| 37 | return gauges, lines, gaugelocation |
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| 38 | |
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| 39 | #gauges, buildings = get_gauges_from_file(project.gauge_filename) |
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| 40 | gauges, lines, locations = get_gauges_from_file(project.gauge_filename) |
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| 41 | |
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| 42 | print 'number of gauges for Benfield: ', len(gauges) |
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| 43 | |
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| 44 | #Read model output |
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| 45 | quantities = ['stage', 'elevation', 'xmomentum', 'ymomentum'] |
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| 46 | f = file_function(swwfile, |
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| 47 | quantities = quantities, |
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| 48 | interpolation_points = gauges, |
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| 49 | verbose = True, |
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| 50 | use_cache = True) |
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| 51 | |
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| 52 | |
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| 53 | |
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| 54 | from math import sqrt, atan, degrees |
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| 55 | from Numeric import ones |
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| 56 | N = len(gauges) |
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| 57 | for k, g in enumerate(gauges): |
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| 58 | if k%((N+10)/10)==0: # diagnostics - print 10 lines |
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| 59 | print 'Doing row %d of %d' %(k, N) |
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| 60 | |
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| 61 | model_time = [] |
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| 62 | stages = [] |
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| 63 | elevations = [] |
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| 64 | momenta = [] |
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| 65 | velocity = [] |
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| 66 | xmom = [] |
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| 67 | ymom = [] |
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| 68 | bearings = [] |
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| 69 | depths = [] |
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| 70 | |
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| 71 | max_depth = 0 |
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| 72 | max_momentum = 0 |
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| 73 | max_velocity = 0 |
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| 74 | |
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| 75 | T = f.get_time() |
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| 76 | due_east = 90.0*ones([len(T)]) |
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| 77 | due_west = 270.0*ones([len(T)]) |
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| 78 | maxT = max(T) |
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| 79 | tstep = maxT/(len(T)-1) |
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| 80 | |
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| 81 | for i, t in enumerate(T): # T is a list of times |
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| 82 | #if tmin < t < tmax: |
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| 83 | w = f(t, point_id = k)[0] |
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| 84 | z = f(t, point_id = k)[1] |
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| 85 | uh = f(t, point_id = k)[2] |
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| 86 | vh = f(t, point_id = k)[3] |
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| 87 | myloc = locations[k] |
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| 88 | depth = w-z |
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| 89 | |
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| 90 | m = sqrt(uh*uh + vh*vh) #Absolute momentum |
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| 91 | vel = sqrt(uh*uh + vh*vh) / (w-z + 1.e-30) #Absolute velocity |
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| 92 | angle = degrees(atan(vh/(uh+1.e-15))) |
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| 93 | if (0 < angle < 90.0): |
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| 94 | if vh > 0: |
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| 95 | bearing = 90.0 - abs(angle) |
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| 96 | if vh < 0: |
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| 97 | bearing = 270.0 - abs(angle) |
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| 98 | if (-90 < angle < 0): |
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| 99 | if vh < 0: |
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| 100 | bearing = 90.0 - abs(angle) |
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| 101 | if vh > 0: |
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| 102 | bearing = 270.0 - abs(angle) |
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| 103 | if angle == 0: |
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| 104 | bearing = 0.0 |
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| 105 | |
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| 106 | model_time.append(t) |
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| 107 | stages.append(w) |
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| 108 | elevations.append(z) #Should be constant over time |
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| 109 | momenta.append(m) |
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| 110 | velocity.append(vel) |
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| 111 | xmom.append(uh) |
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| 112 | ymom.append(vh) |
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| 113 | bearings.append(bearing) |
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| 114 | depths.append(depth) |
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| 115 | |
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| 116 | if w-z > max_depth: |
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| 117 | max_depth = w-z |
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| 118 | if m > max_momentum: |
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| 119 | max_momentum = m |
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| 120 | if vel > max_velocity: |
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| 121 | max_velocity = vel |
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| 122 | |
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| 123 | #Plot only those gauges that have been inundated by more than a threshold |
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| 124 | #if max_depth < 0.2: |
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| 125 | # print 'Skipping gauge %d' %k |
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| 126 | # continue |
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| 127 | |
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| 128 | ion() |
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| 129 | hold(False) |
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| 130 | |
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| 131 | if elevations[0] < -10: |
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| 132 | plot(model_time, stages, '-b') |
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| 133 | else: |
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| 134 | plot(model_time, stages, '-b', |
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| 135 | model_time, elevations, '-k') |
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| 136 | #name = 'Gauge_%d: (%.1f, %.1f)' %(k, g[0], g[1]) |
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| 137 | name = 'Gauge_%d: (%.1f, %.1f) Location: %s' %(k, g[0], g[1], myloc) |
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| 138 | title(name) |
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| 139 | |
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| 140 | title('%s (stage)' %name) |
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| 141 | xlabel('time [s]') |
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| 142 | ylabel('elevation [m]') |
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| 143 | legend(('Stage', 'Bed = %.1f' %elevations[0]), |
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| 144 | shadow=True, |
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| 145 | loc='upper right') |
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| 146 | #savefig('Gauge_%d_stage' %k) |
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| 147 | savefig('Gauge_%s_stage' %myloc) |
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| 148 | |
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| 149 | # raw_input('Next') |
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| 150 | |
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| 151 | #Momentum plot |
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| 152 | ion() |
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| 153 | hold(False) |
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| 154 | plot(model_time, momenta, '-r') |
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| 155 | title(name) |
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| 156 | |
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| 157 | title('%s (momentum)' %name) |
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| 158 | xlabel('time [s]') |
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| 159 | ylabel('sqrt( uh^2 + vh^2 ) [m^2/s]') |
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| 160 | #savefig('Gauge_%d_momentum' %k) |
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| 161 | savefig('Gauge_%s_momentum' %myloc) |
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| 162 | |
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| 163 | # raw_input('Next') |
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| 164 | |
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| 165 | #Bearing plot |
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| 166 | ion() |
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| 167 | hold(False) |
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| 168 | ax = plot(model_time, bearings, '-b', model_time, due_west, '-.b', |
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| 169 | model_time, due_east, '-.b') |
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| 170 | title(name) |
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| 171 | ax = axis([0, maxT, 0, 360]) |
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| 172 | text(maxT+tstep, 90, 'East') |
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| 173 | text(maxT+tstep, 270, 'West') |
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| 174 | #majorLocator = MultipleLocator(3600) |
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| 175 | #print 'major', majorLocator[1] |
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| 176 | #ax.xaxis.set_major_locator(majorLocator) #'yticklabels', range(30,390,30)) |
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| 177 | # set(labels,color='g',rotation=45) |
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| 178 | |
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| 179 | title('%s (bearing)' %name) |
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| 180 | xlabel('time [s]') |
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| 181 | ylabel(' atan(vh/uh) [degrees from North]') |
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| 182 | #savefig('Gauge_%d_bearing' %k) |
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| 183 | savefig('Gauge_%s_bearing' %myloc) |
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| 184 | |
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| 185 | # raw_input('Next') |
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| 186 | |
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| 187 | #Speed plot |
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| 188 | ion() |
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| 189 | hold(False) |
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| 190 | plot(model_time, velocity, '-r') |
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| 191 | title(name) |
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| 192 | |
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| 193 | title('%s (velocity)' %name) |
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| 194 | xlabel('time [s]') |
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| 195 | ylabel('sqrt( uh^2 + vh^2 ) / depth [m/s]') |
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| 196 | #savefig('Gauge_%d_speed' %k) |
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| 197 | savefig('Gauge_%s_speed' %myloc) |
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| 198 | |
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| 199 | # raw_input('Next') |
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| 200 | |
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| 201 | whichone = '_%s' %myloc |
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| 202 | thisfile = project.gaugetimeseries+whichone+'.csv' |
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| 203 | fid = open(thisfile, 'w') |
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| 204 | s = 'Time, Depth, Momentum, Velocity \n' |
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| 205 | fid.write(s) |
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| 206 | for i_t, i_d, i_m, i_vel in zip(model_time, depths, momenta, velocity): |
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| 207 | s = '%.2f, %.2f, %.2f, %.2f\n' %(i_t, i_d, i_m, i_vel) |
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| 208 | fid.write(s) |
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| 209 | |
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| 210 | show() |
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| 211 | |
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| 212 | |
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