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Last active December 27, 2015 14:29
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Matplotlib Alpha colormaps
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gistfile1.txt
# setup colormaps with alpha backgrounds
imshow(np.random.random((10,10)), cmap='Reds')
imshow(np.random.random((10,10)), cmap='Blues')
close('all')
import copy
red_alpha = copy.copy(mpl.cm.Reds)
blue_alpha = copy.copy(mpl.cm.Blues)
red_alpha._init()
blue_alpha._init()
red_alpha._lut[0,3] = 0
blue_alpha._lut[0,3] = 0
# for jet
import copy
plt.imshow(np.random.random((10,10)), cmap='jet')
plt.close('all')
jet_alpha = copy.copy(mpl.cm.jet)
jet_alpha._init()
jet_alpha._lut[0,3] = 0
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