Logarithmic Colormap / Other Colormap in Matplotlib

This is kind of a pain to find out:


from matplotlib.colors import LogNorm

im = imshow(.... cmap=... , norm=LogNorm(vmin=clevs[0], vmax=clevs[-1]))


It also works for contours, and can be particularly useful if you only want to display contours at a few levels, but you want the colormap to start at a different point. e.g.:

contour(xx,levels=[2,3,4,5,6,7,8,9,10],norm=matplotlib.colors.Normalize(vmin=0,vmax=10))

will start at light blue instead of dark blue in the default colormap