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

## de         


        

Answer 1

A slight improvement on the chosen answer

import numpy.ma as ma
Zm = ma.masked_invalid(Z)
plt.pcolormesh(X, Y, Zm.T)

masked_invalid masks all NaN values, thereby saving the need to specify

mask = np.isnan(Z)