import numpy
import matplotlib.pyplot as plt
from matplotlib.image import NonUniformImage

offset = 9.*10**6 # XXX change this XXX
nx = 60
ny = 100
x = numpy.arange(offset, offset+nx)
y = numpy.arange(offset, offset+ny)
z = numpy.random.rand(ny, nx)

ax = plt.subplot(111)
im = NonUniformImage(ax, extent=(offset, offset+nx, offset, offset+ny))
im.set_data(x, y, z)
ax.images.append(im)
ax.set_xlim(offset, offset+nx)
ax.set_ylim(offset, offset+ny)

plt.show()