import matplotlib matplotlib.use('Agg') import matplotlib.pyplot as plt fig = plt.figure() ax = fig.add_subplot(1,2,1) image = plt.imread('2mass_rgb.png') ax.imshow ...

I'm not sure if this is an issue related to matplotlib or cartopy. I'll give an example here, hope somebody will figure this out. With packages of the following, I can still reproduce this: matplotlib ...