I have two arrays and I want to plot the ratio of A/B when A>=B or B/A

when A<B. I can create numpy masked arrays to find the result in

these two instances, but I'm having trouble plotting them. Below I

have a minimal example. I get a plot, but only from the second time I

issue the pcolormesh command. Is there a way to combine the two

arrays for plotting or to plot without overlapping?

Thanks,

Jeremy

import numpy

import matplotlib.pyplot as pyplot

N = 5

A = numpy.array(numpy.random.randint(0, 10, (N,N)), dtype='float64')

B = numpy.array(numpy.random.randint(0, 10, (N,N)), dtype='float64')

ab = numpy.ma.masked_array(A/B, mask=A>=B, fill_value=0.0)

ba = numpy.ma.masked_array(B/A, mask=A<B)

Figure = pyplot.figure()

pyplot.pcolormesh(ab)

pyplot.pcolormesh(ba)