| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | ### A. Spiga and A. Colaitis -- LMD -- 30/05/2011 |
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| 4 | |
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| 5 | def winds (namefile,\ |
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| 6 | nvert,\ |
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| 7 | proj="cyl",\ |
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| 8 | back=None,\ |
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| 9 | target=None, |
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| 10 | stride=5,\ |
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| 11 | var='HGT'): |
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| 12 | from netCDF4 import Dataset |
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| 13 | from myplot import getcoord2d,define_proj,makeplotpng,simplinterv,vectorfield,ptitle |
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| 14 | from matplotlib.pyplot import contourf, subplot, figure |
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| 15 | import numpy as np |
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| 16 | nc = Dataset(namefile) |
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| 17 | [lon2d,lat2d] = getcoord2d(nc) |
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| 18 | [wlon,wlat] = simplinterv(lon2d,lat2d) |
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| 19 | [u,v] = getwinds(nc) |
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| 20 | nt = len(u[:,0,0,0]) |
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| 21 | if var not in nc.variables: |
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| 22 | print "not found in file:",var |
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| 23 | exit() |
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| 24 | else: |
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| 25 | dimension = np.array(nc.variables[var]).ndim |
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| 26 | if dimension == 3: what_I_plot = nc.variables[var][:,:,:] |
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| 27 | elif dimension == 4: what_I_plot = nc.variables[var][:,nvert,:,:] |
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| 28 | fig = figure() |
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| 29 | fig.subplots_adjust(wspace = 0.0, hspace = 0.3) |
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| 30 | sub = 221 |
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| 31 | for i in range(0,nt-1,int(nt/4.)): |
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| 32 | subplot(sub) |
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| 33 | ptitle("Winds time"+str(i)+" level"+str(nvert)) |
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| 34 | m = define_proj(proj,wlon,wlat,back=back) |
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| 35 | x, y = m(lon2d, lat2d) |
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| 36 | contourf(x, y, what_I_plot[i,:,:], 30) |
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| 37 | vectorfield(u[i,nvert,:,:], v[i,nvert,:,:],\ |
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| 38 | x, y, stride=stride, csmooth=2,\ |
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| 39 | scale=20., factor=300., color='k') |
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| 40 | sub += 1 |
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| 41 | if not target: zeplot = namefile+".winds"+var+str(nvert) |
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| 42 | else: zeplot = target+"/winds"+var+str(nvert) |
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| 43 | makeplotpng(zeplot,pad_inches_value=0.35) |
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| 44 | |
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| 45 | def getwinds (nc,charu='U',charv='V'): |
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| 46 | import numpy as np |
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| 47 | u = nc.variables[charu] |
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| 48 | v = nc.variables[charv] |
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| 49 | if charu == 'U': u = u[:, :, :, 0:len(u[0,0,0,:])-1] |
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| 50 | if charv == 'V': v = v[:, :, 0:len(v[0,0,:,0])-1, :] |
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| 51 | #print np.array(u).shape, np.array(v).shape |
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| 52 | return u,v |
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| 53 | |
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| 54 | if __name__ == "__main__": |
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| 55 | import sys |
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| 56 | ### to be replaced by argparse |
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| 57 | from optparse import OptionParser |
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| 58 | parser = OptionParser() |
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| 59 | parser.add_option('-f', action='store', dest='namefile', type="string", default=None, help='name of WRF file [NEEDED]') |
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| 60 | parser.add_option('-l', action='store', dest='nvert', type="int", default=0, help='subscript for vertical level') |
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| 61 | parser.add_option('-p', action='store', dest='proj', type="string", default='cyl', help='projection') |
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| 62 | parser.add_option('-b', action='store', dest='back', type="string", default=None, help='background') |
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| 63 | parser.add_option('-t', action='store', dest='target', type="string", default=None, help='destination folder') |
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| 64 | parser.add_option('-s', action='store', dest='stride', type="int", default=5, help='stride vectors') |
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| 65 | parser.add_option('-v', action='store', dest='var', type="string", default='HGT', help='variable contoured') |
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| 66 | (opt,args) = parser.parse_args() |
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| 67 | if opt.namefile is None: |
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| 68 | print "I want to eat one file at least ! Use winds.py -f name_of_my_file. Or type winds.py -h" |
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| 69 | exit() |
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| 70 | print "Options:", opt |
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| 71 | winds (opt.namefile,opt.nvert,proj=opt.proj,back=opt.back,target=opt.target,stride=opt.stride,var=opt.var) |
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