pcolormesh with missing values?

Question

I have 3 1-D ndarrays: x, y, z

and the following code:

import numpy as np
import matplotlib.pyplot as plt
import scipy.interpolate as spinterp

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Answer 1

Got it. This seems round-about, but this was the solution:

import numpy.ma as ma

Zm = ma.masked_where(np.isnan(Z),Z)
plt.pcolormesh(X,Y,Zm.T)

If the Z matrix contains nan's, it has to be a masked array for pcolormesh, which has to be created with ma.masked_where, or, alternatively,

Zm = ma.array(Z,mask=np.isnan(Z))