[Matplotlib-users] heatmap and masked values

[Christian M. <mee...@im...>]

Hi,

I have a 2D masked array, created like:

import numpy as np
data = np.ma.array(data, mask=[data == 'NA'])

which I would like to plot as a heatmap.

import pylab

pylab.pcolor(data)
or
pylab.pcolormesh(data)

Well, it works with any array, but not if masked values are in there.
Can somebody supply me with a snippet, as I apparently don't get the
relevant piece in the docs (or did not find it ;-) ).

TIA
Christian