| 1 | #!/usr/bin/env python |
|---|
| 2 | |
|---|
| 3 | ### A. Spiga -- LMD -- 30/06/2011 to 04/07/2011 |
|---|
| 4 | ### Thanks to A. Colaitis for the parser trick |
|---|
| 5 | |
|---|
| 6 | |
|---|
| 7 | #################################### |
|---|
| 8 | #################################### |
|---|
| 9 | ### The main program to plot vectors |
|---|
| 10 | def winds (namefile,\ |
|---|
| 11 | nvert,\ |
|---|
| 12 | proj=None,\ |
|---|
| 13 | back=None,\ |
|---|
| 14 | target=None, |
|---|
| 15 | stride=3,\ |
|---|
| 16 | numplot=4,\ |
|---|
| 17 | var=None,\ |
|---|
| 18 | colorb=None,\ |
|---|
| 19 | winds=True): |
|---|
| 20 | |
|---|
| 21 | #################################################################################################################### |
|---|
| 22 | ### Colorbars http://www.scipy.org/Cookbook/Matplotlib/Show_colormaps?action=AttachFile&do=get&target=colormaps3.png |
|---|
| 23 | |
|---|
| 24 | ################################# |
|---|
| 25 | ### Load librairies and functions |
|---|
| 26 | from netCDF4 import Dataset |
|---|
| 27 | from myplot import getcoord2d,define_proj,makeplotpng,simplinterv,vectorfield,ptitle,latinterv,getproj,wrfinterv,dumpbdy |
|---|
| 28 | from matplotlib.pyplot import contourf, subplot, figure, rcParams, savefig, colorbar |
|---|
| 29 | from matplotlib.cm import get_cmap |
|---|
| 30 | import numpy as np |
|---|
| 31 | |
|---|
| 32 | ###################### |
|---|
| 33 | ### Load NETCDF object |
|---|
| 34 | nc = Dataset(namefile) |
|---|
| 35 | |
|---|
| 36 | ################################### |
|---|
| 37 | ### Recognize predefined file types |
|---|
| 38 | if 'controle' in nc.variables: typefile = 'gcm' |
|---|
| 39 | elif 'vert' in nc.variables: typefile = 'mesoapi' |
|---|
| 40 | elif 'U' in nc.variables: typefile = 'meso' |
|---|
| 41 | else: |
|---|
| 42 | print "typefile not supported." |
|---|
| 43 | print nc.variables |
|---|
| 44 | exit() |
|---|
| 45 | |
|---|
| 46 | ############################################################## |
|---|
| 47 | ### Try to guess the projection from wrfout if not set by user |
|---|
| 48 | if typefile in ['mesoapi','meso']: |
|---|
| 49 | if proj == None: proj = getproj(nc) |
|---|
| 50 | ### (il faudrait passer CEN_LON dans la projection ?) |
|---|
| 51 | elif typefile in ['gcm']: |
|---|
| 52 | if proj == None: proj = "cyl" |
|---|
| 53 | ## pb avec les autres (de trace derriere la sphere ?) |
|---|
| 54 | |
|---|
| 55 | ############################################ |
|---|
| 56 | #### Choose underlying topography by default |
|---|
| 57 | if not back: |
|---|
| 58 | if not var: back = "mola" ## if no var: draw mola |
|---|
| 59 | elif typefile in ['mesoapi','meso'] \ |
|---|
| 60 | and proj not in ['merc','lcc']: back = "molabw" ## if var but meso: draw molabw |
|---|
| 61 | else: pass ## else: draw None |
|---|
| 62 | |
|---|
| 63 | #################################################### |
|---|
| 64 | ### Get geographical coordinates and plot boundaries |
|---|
| 65 | if typefile in ['mesoapi','meso']: |
|---|
| 66 | [lon2d,lat2d] = getcoord2d(nc) |
|---|
| 67 | lon2d = dumpbdy(lon2d) |
|---|
| 68 | lat2d = dumpbdy(lat2d) |
|---|
| 69 | elif typefile in ['gcm']: |
|---|
| 70 | [lon2d,lat2d] = getcoord2d(nc,nlat="latitude",nlon="longitude",is1d=True) |
|---|
| 71 | if proj == "npstere": [wlon,wlat] = latinterv("North_Pole") |
|---|
| 72 | elif proj == "lcc": [wlon,wlat] = wrfinterv(lon2d,lat2d) |
|---|
| 73 | else: [wlon,wlat] = simplinterv(lon2d,lat2d) |
|---|
| 74 | |
|---|
| 75 | ################## |
|---|
| 76 | ### Get local time |
|---|
| 77 | if typefile in ['mesoapi','meso']: ltst = int(getattr(nc, 'GMT') + 0.5*(wlon[0]+wlon[1])/15.) |
|---|
| 78 | elif typefile in ['gcm']: ltst = 0 |
|---|
| 79 | |
|---|
| 80 | ############################################################################## |
|---|
| 81 | ### Get winds and know if those are meteorological winds (ie. zon, mer) or not |
|---|
| 82 | if winds: |
|---|
| 83 | if typefile is 'mesoapi': |
|---|
| 84 | [u,v] = getwinds(nc) |
|---|
| 85 | metwind = True ## meteorological (zon/mer) |
|---|
| 86 | elif typefile is 'gcm': |
|---|
| 87 | [u,v] = getwinds(nc,charu='u',charv='v') |
|---|
| 88 | metwind = True ## meteorological (zon/mer) |
|---|
| 89 | elif typefile is 'meso': |
|---|
| 90 | [u,v] = getwinds(nc,charu='U',charv='V') |
|---|
| 91 | metwind = False ## geometrical (wrt grid) |
|---|
| 92 | print "Beware ! Not using meteorological winds. You trust numerical grid as being (x,y)." |
|---|
| 93 | |
|---|
| 94 | ##################################################### |
|---|
| 95 | ### Load the chosen variables, whether it is 2D or 3D |
|---|
| 96 | if var: |
|---|
| 97 | if var not in nc.variables: |
|---|
| 98 | print "not found in file:",var |
|---|
| 99 | exit() |
|---|
| 100 | else: |
|---|
| 101 | dimension = np.array(nc.variables[var]).ndim |
|---|
| 102 | if dimension == 2: field = nc.variables[var][:,:] |
|---|
| 103 | elif dimension == 3: field = nc.variables[var][:,:,:] |
|---|
| 104 | elif dimension == 4: field = nc.variables[var][:,nvert,:,:] |
|---|
| 105 | |
|---|
| 106 | ########################### |
|---|
| 107 | ### Get length of time axis |
|---|
| 108 | if winds: nt = len(u[:,0,0,0]) |
|---|
| 109 | elif var: |
|---|
| 110 | if dimension == 2: nt = 1 |
|---|
| 111 | else : nt = len(field[:,0,0]) |
|---|
| 112 | |
|---|
| 113 | ######################################### |
|---|
| 114 | ### Name for title and graphics save file |
|---|
| 115 | if winds: basename = "WINDS_" |
|---|
| 116 | else: basename = "" |
|---|
| 117 | if var: |
|---|
| 118 | basename = basename + var |
|---|
| 119 | if typefile is 'meso': stralt = "_lvl" + str(nvert) |
|---|
| 120 | elif typefile is 'mesoapi': |
|---|
| 121 | zelevel = int(nc.variables['vert'][nvert]) |
|---|
| 122 | if 'altitude_abg' in nc.dimensions: stralt = "_"+str(zelevel)+"m-ALS" |
|---|
| 123 | elif 'bottom_top' in nc.dimensions: stralt = "_"+str(zelevel)+"m-AMR" |
|---|
| 124 | elif 'pressure' in nc.dimensions: stralt = "_"+str(zelevel)+"Pa" |
|---|
| 125 | else: stralt = "" |
|---|
| 126 | basename = basename + stralt |
|---|
| 127 | |
|---|
| 128 | ################################## |
|---|
| 129 | ### Open a figure and set subplots |
|---|
| 130 | fig = figure() |
|---|
| 131 | if numplot > 0: |
|---|
| 132 | if numplot == 4: |
|---|
| 133 | sub = 221 |
|---|
| 134 | fig.subplots_adjust(wspace = 0.1, hspace = 0.3) |
|---|
| 135 | rcParams['font.size'] = int( rcParams['font.size'] * 2. / 3. ) |
|---|
| 136 | elif numplot == 2: |
|---|
| 137 | sub = 121 |
|---|
| 138 | fig.subplots_adjust(wspace = 0.3) |
|---|
| 139 | rcParams['font.size'] = int( rcParams['font.size'] * 3. / 4. ) |
|---|
| 140 | elif numplot == 3: |
|---|
| 141 | sub = 131 |
|---|
| 142 | fig.subplots_adjust(wspace = 0.3) |
|---|
| 143 | rcParams['font.size'] = int( rcParams['font.size'] * 2. / 3. ) |
|---|
| 144 | elif numplot == 6: |
|---|
| 145 | sub = 231 |
|---|
| 146 | fig.subplots_adjust(wspace = 0.4, hspace = 0.0) |
|---|
| 147 | rcParams['font.size'] = int( rcParams['font.size'] * 2. / 3. ) |
|---|
| 148 | elif numplot == 8: |
|---|
| 149 | sub = 331 #241 |
|---|
| 150 | fig.subplots_adjust(wspace = 0.1, hspace = 0.3) |
|---|
| 151 | rcParams['font.size'] = int( rcParams['font.size'] * 1. / 2. ) |
|---|
| 152 | elif numplot == 9: |
|---|
| 153 | sub = 331 |
|---|
| 154 | fig.subplots_adjust(wspace = 0.1, hspace = 0.3) |
|---|
| 155 | rcParams['font.size'] = int( rcParams['font.size'] * 1. / 2. ) |
|---|
| 156 | elif numplot == 1: |
|---|
| 157 | sub = 99999 |
|---|
| 158 | else: |
|---|
| 159 | print "supported: 1,2,3,4,6,8" |
|---|
| 160 | exit() |
|---|
| 161 | ### Prepare time loop |
|---|
| 162 | if nt <= numplot or numplot == 1: |
|---|
| 163 | tabrange = [0] |
|---|
| 164 | numplot = 1 |
|---|
| 165 | else: |
|---|
| 166 | tabrange = range(0,nt,int(nt/numplot)) #nt-1 |
|---|
| 167 | tabrange = tabrange[0:numplot] |
|---|
| 168 | else: |
|---|
| 169 | tabrange = range(0,nt,1) |
|---|
| 170 | sub = 99999 |
|---|
| 171 | print tabrange |
|---|
| 172 | |
|---|
| 173 | ################################# |
|---|
| 174 | ### Time loop for plotting device |
|---|
| 175 | found_lct = False |
|---|
| 176 | for i in tabrange: |
|---|
| 177 | |
|---|
| 178 | ### General plot settings |
|---|
| 179 | if numplot > 1: |
|---|
| 180 | subplot(sub) |
|---|
| 181 | found_lct = True |
|---|
| 182 | elif numplot == 1: |
|---|
| 183 | found_lct = True |
|---|
| 184 | ### If only one local time is requested (numplot < 0) |
|---|
| 185 | elif numplot <= 0: |
|---|
| 186 | if (ltst+i)%24 + numplot != 0: continue |
|---|
| 187 | else: found_lct = True |
|---|
| 188 | |
|---|
| 189 | ### Map projection |
|---|
| 190 | m = define_proj(proj,wlon,wlat,back=back) |
|---|
| 191 | x, y = m(lon2d, lat2d) |
|---|
| 192 | |
|---|
| 193 | #### Contour plot |
|---|
| 194 | if var: |
|---|
| 195 | if typefile in ['mesoapi','meso']: what_I_plot = dumpbdy(field[i,:,:]) |
|---|
| 196 | elif typefile in ['gcm']: |
|---|
| 197 | if dimension == 2: what_I_plot = field[:,:] |
|---|
| 198 | elif dimension == 3: what_I_plot = field[i,:,:] |
|---|
| 199 | contourf( x, y, what_I_plot, 30, cmap = get_cmap(name=colorb) ) |
|---|
| 200 | if colorb: colorbar(fraction=0.05,pad=0.1) |
|---|
| 201 | |
|---|
| 202 | ### Vector plot |
|---|
| 203 | if winds: |
|---|
| 204 | if typefile in ['mesoapi','meso']: |
|---|
| 205 | [vecx,vecy] = [dumpbdy(u[i,nvert,:,:]), dumpbdy(v[i,nvert,:,:])] |
|---|
| 206 | key = True |
|---|
| 207 | elif typefile in ['gcm']: |
|---|
| 208 | [vecx,vecy] = [ u[i,nvert,:,:] , v[i,nvert,:,:] ] |
|---|
| 209 | key = False |
|---|
| 210 | if metwind: [vecx,vecy] = m.rotate_vector(vecx, vecy, lon2d, lat2d) |
|---|
| 211 | if var == None and back == "vishires": colorvec = 'w' |
|---|
| 212 | else: colorvec = 'k' |
|---|
| 213 | vectorfield(vecx, vecy,\ |
|---|
| 214 | x, y, stride=stride, csmooth=stride,\ |
|---|
| 215 | scale=15., factor=300., color=colorvec, key=key) |
|---|
| 216 | #200. ## or csmooth=2 |
|---|
| 217 | |
|---|
| 218 | ### Next subplot |
|---|
| 219 | ptitle( basename + "_LT"+str((ltst+i)%24) ) |
|---|
| 220 | sub += 1 |
|---|
| 221 | |
|---|
| 222 | ########################################################################## |
|---|
| 223 | ### Save the figure in a file in the data folder or an user-defined folder |
|---|
| 224 | if not target: zeplot = namefile+"_"+basename |
|---|
| 225 | else: zeplot = target+"/"+basename |
|---|
| 226 | if numplot <= 0: zeplot = zeplot + "_LT"+str(abs(numplot)) |
|---|
| 227 | if found_lct: makeplotpng(zeplot,pad_inches_value=0.35) |
|---|
| 228 | else: print "Local time not found" |
|---|
| 229 | |
|---|
| 230 | |
|---|
| 231 | |
|---|
| 232 | #################################################### |
|---|
| 233 | #################################################### |
|---|
| 234 | ### A simple program to get wind vectors' components |
|---|
| 235 | def getwinds (nc,charu='Um',charv='Vm'): |
|---|
| 236 | import numpy as np |
|---|
| 237 | u = nc.variables[charu] |
|---|
| 238 | v = nc.variables[charv] |
|---|
| 239 | if charu == 'U': u = u[:, :, :, 0:len(u[0,0,0,:])-1] |
|---|
| 240 | if charv == 'V': v = v[:, :, 0:len(v[0,0,:,0])-1, :] |
|---|
| 241 | ### ou alors prendre les coordonnees speciales |
|---|
| 242 | return u,v |
|---|
| 243 | |
|---|
| 244 | |
|---|
| 245 | |
|---|
| 246 | ########################################################################################### |
|---|
| 247 | ########################################################################################### |
|---|
| 248 | ### What is below relate to running the file as a command line executable (very convenient) |
|---|
| 249 | if __name__ == "__main__": |
|---|
| 250 | import sys |
|---|
| 251 | from optparse import OptionParser ### to be replaced by argparse |
|---|
| 252 | from api_wrapper import api_onelevel |
|---|
| 253 | parser = OptionParser() |
|---|
| 254 | parser.add_option('-f', action='store', dest='namefile', type="string", default=None, help='[NEEDED] name of WRF file') |
|---|
| 255 | parser.add_option('-l', action='store', dest='nvert', type="float", default=0, help='vertical level (def=0)(-i 2: p,mbar)(-i 3,4: z,km)') |
|---|
| 256 | parser.add_option('-p', action='store', dest='proj', type="string", default=None, help='projection') |
|---|
| 257 | parser.add_option('-b', action='store', dest='back', type="string", default=None, help='background') |
|---|
| 258 | parser.add_option('-t', action='store', dest='target', type="string", default=None, help='destination folder') |
|---|
| 259 | parser.add_option('-s', action='store', dest='stride', type="int", default=3, help='stride vectors (def=3)') |
|---|
| 260 | parser.add_option('-v', action='store', dest='var', type="string", default=None, help='variable contoured') |
|---|
| 261 | parser.add_option('-n', action='store', dest='numplot', type="int", default=4, help='number of plots (def=1)(<0: 1 plot of LT -*numplot*)') |
|---|
| 262 | parser.add_option('-i', action='store', dest='interp', type="int", default=None, help='interpolation method (2: press, 3: z-amr, 4:z-als)') |
|---|
| 263 | parser.add_option('-c', action='store', dest='colorb', type="string", default=None, help='change colormap (and draw a colorbar)') |
|---|
| 264 | parser.add_option('-x', action='store_false', dest='winds', default=True, help='flag: no wind vectors') |
|---|
| 265 | (opt,args) = parser.parse_args() |
|---|
| 266 | if opt.namefile is None: |
|---|
| 267 | print "I want to eat one file at least ! Use winds.py -f name_of_my_file. Or type winds.py -h" |
|---|
| 268 | exit() |
|---|
| 269 | print "Options:", opt |
|---|
| 270 | |
|---|
| 271 | zefile = opt.namefile |
|---|
| 272 | zelevel = opt.nvert |
|---|
| 273 | stralt = None |
|---|
| 274 | if opt.interp is not None: |
|---|
| 275 | if opt.nvert is 0 and opt.interp is 4: zelevel = 0.010 |
|---|
| 276 | ### winds or no winds |
|---|
| 277 | if opt.winds : zefields = 'uvmet' |
|---|
| 278 | else : zefields = '' |
|---|
| 279 | ### var or no var |
|---|
| 280 | if opt.var is None : pass |
|---|
| 281 | elif zefields == '' : zefields = opt.var |
|---|
| 282 | else : zefields = zefields + "," + opt.var |
|---|
| 283 | print zefields |
|---|
| 284 | zefile = api_onelevel ( path_to_input = '', \ |
|---|
| 285 | input_name = zefile, \ |
|---|
| 286 | path_to_output = opt.target, \ |
|---|
| 287 | fields = zefields, \ |
|---|
| 288 | interp_method = opt.interp, \ |
|---|
| 289 | onelevel = zelevel ) |
|---|
| 290 | zelevel = 0 ## so that zelevel could play again the role of nvert |
|---|
| 291 | |
|---|
| 292 | winds (zefile,int(zelevel),\ |
|---|
| 293 | proj=opt.proj,back=opt.back,target=opt.target,stride=opt.stride,var=opt.var,numplot=opt.numplot,colorb=opt.colorb,winds=opt.winds) |
|---|
