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import os,datetime,glob |
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import numpy as np |
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import matplotlib as mpl |
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mpl.use("Agg") |
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from windrose import WindroseAxes |
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from matplotlib import pyplot as plt |
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import pycdf |
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ncDir = '/seacoos/data/nccoos/level1/billymitchell/sodar1' |
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ncFileGlob = 'billymitchell_sfas_*.nc' |
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pngDir = '/seacoos/data/nccoos/level1/billymitchell/sodar1/plots/winddist' |
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if not os.path.exists(pngDir): |
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os.mkdir(pngDir) |
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pngExt = 'png' |
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htmlExt = 'html' |
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ncFilePattern = os.path.join(ncDir,ncFileGlob) |
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files = glob.glob(ncFilePattern) |
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previous = [files[-1]] + files[:-1] |
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next = files[1:] + [files[0]] |
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files = zip(previous,files,next) |
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first = True |
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for previous,ncFile,next in files: |
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print 'Processing',ncFile |
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ncFileName = os.path.splitext(os.path.basename(ncFile))[0] |
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year = ncFileName[19:23] |
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month = ncFileName[24:26] |
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month = datetime.datetime(int(year),int(month),1).strftime('%B') |
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if previous: |
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previous = os.path.splitext(os.path.basename(previous))[0] |
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previousYear = previous[19:23] |
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previousMonth = previous[24:26] |
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previousMonth = datetime.datetime(int(previousYear),int(previousMonth),1).strftime('%B') |
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previous = previous + os.extsep + htmlExt |
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if next: |
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next = os.path.splitext(os.path.basename(next))[0] |
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nextYear = next[19:23] |
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nextMonth = next[24:26] |
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nextMonth = datetime.datetime(int(nextYear),int(nextMonth),1).strftime('%B') |
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next = next + os.extsep + htmlExt |
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nc = pycdf.CDF(ncFile) |
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t = nc.var('time')[:] |
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z = nc.var('z')[:] |
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u = nc.var('u')[:] |
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v = nc.var('v')[:] |
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w = nc.var('w')[:] |
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mu = np.ma.masked_invalid(u) |
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mv = np.ma.masked_invalid(v) |
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mw = np.ma.masked_invalid(w) |
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mumean = mu.mean(axis=0) |
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mvmean = mv.mean(axis=0) |
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mwmean = mw.mean(axis=0) |
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ucount = mu.count(axis=0) |
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vcount = mv.count(axis=0) |
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wcount = mw.count(axis=0) |
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mrho = np.sqrt((mu**2) + (mv**2)) |
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rho = mrho.T.data |
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mtheta = (180 * np.arctan2(mv, mu)/np.pi) |
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theta = np.piecewise(mtheta, |
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(mtheta <= 90, mtheta > 90), |
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(lambda x: 90 - x, lambda x: 450 - x)) |
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theta = theta.T |
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for x in range(0,rho.shape[0]): |
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if rho[x].any(): |
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fig = plt.figure(figsize=(8, 8), dpi=80, facecolor='w', edgecolor='w') |
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rect = [0.1, 0.1, 0.8, 0.8] |
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ax = WindroseAxes(fig, rect, axisbg='w') |
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fig.add_axes(ax) |
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ax.bar(theta[x], rho[x], normed=True, opening=0.8, edgecolor='white') |
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l = ax.legend(axespad=-0.10) |
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plt.setp(l.get_texts(), fontsize=8) |
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if not os.path.exists(os.path.join(pngDir,ncFileName)): |
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os.mkdir(os.path.join(pngDir,ncFileName)) |
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outFile = os.path.join(pngDir,ncFileName,('%dm' % z[x]) + os.extsep + pngExt) |
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print 'Saving', outFile |
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fig.savefig(outFile) |
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