Just got bit by this and I thought I'd share to help others.
I was just quickly writing out some pyplot commands to create two subplots
to compare some results. I did:
plt.subplots(1, 2, 1)
plt.contourf(....)
plt.title("Contours")
xlim = plt.xlim()
ylim = plt.ylim()
plt.subplots(1, 2, 2)
plt.imshow(....)
plt.title("Raw Image")
plt.xlim(xlim)
plt.ylim(ylim)
Did you see the error? I did "subplots" instead of "subplot". Since the
third argument for plt.subplot is "sharex", a value of 1 or 2 appears
perfectly valid to it. Meanwhile, the second call to plt.subplots() throws
out my first subplot, and I also get the seemingly odd behavior of the
first subplot having the correct x limits, but the default y limits (0,
1). Of course, this makes sense once you figure out the issue, but it is
an extra wrinkle that can be quite confusing.
I suspect this is a very easy mistake to make. Should we perhaps test the
value of sharex in subplots() and warn if it is anything but a python
bool? Just a thought.
Cheers!
Ben Root
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