How to set a title inside subplots using matplotlib?

Question

I am creating a figure with subplots using:

fig, axs = plt.subplots(5, sharex=True, sharey=True, gridspec_kw={'hspace': 0})

Then I want to add a title to each subplot, but with the title inside the subplot. I tried using

for i in range(0,5):
    axs[i].set_title('title = ' + str(i), pad = -15)

But this approach creates the last title again in the subplot above, for reasons I don't yet understand. I also tried appending an additional subplot, but couldn't find a convenient way to get rid of it again.

There was a bug in matplotlib that is fixed in the 3.3 release which is upcoming. If you can use the prerelease please try that and see if this is fixed? If not, feel free to open a bug report at github. — Jody Klymak
– Jody Klymak, Commented Jul 2, 2020 at 15:45

DavidG · Accepted Answer · 2020-07-02 12:46:15Z

3

I don't know why this happens using pad. However, a workaround might be to use the argument y= to specify a position for the title text, along with changing the vertical alignment of the text:

fig, axs = plt.subplots(5, sharex=True, sharey=True, gridspec_kw={'hspace': 0})

for i in range(0,5):
    axs[i].set_title('title = ' + str(i), y=0.8, va="top")

edited Jul 2, 2020 at 12:46

answered Jul 2, 2020 at 11:47

DavidG

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1 Comment

Messor Over a year ago

This is pretty convenient and does what I was looking for. Thanks a lot!

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