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ImportanceOfBeingErnest opened this issue Jun 13, 2018 · 7 comments · Fixed by #22418
Closed

plt.subplot eats my subplots #11435

ImportanceOfBeingErnest opened this issue Jun 13, 2018 · 7 comments · Fixed by #22418
Milestone
v3.6.0

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@ImportanceOfBeingErnest
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Bug report

Bug summary

plt.subplot eats my subplots. But it doesn't completely digest them, since they are still there, just not shown.

Creating a subplot grid with plt.subplots and in addition adding a plt.subplot removes those subplots from the grid, which are under the newly created subplot.
Creating the additional subplot via fig.add_subplot does not remove them.

Code for reproduction

import matplotlib.pyplot as plt
fig, ax = plt.subplots(2,3,
                       subplot_kw={"label" : "A"}, 
                       gridspec_kw={'width_ratios':[1,1,3]})
ax[0,2].plot([1,2,3])

axi = plt.subplot(133, label="B")
axi.plot([7,6,5], color="red")
axi.axis("off")

plt.show()

Actual outcome

image

Expected outcome

The expected outcome would be the same as with fig.add_subplot:

axi = fig.add_subplot(133, label="B")
axi.plot([7,6,5], color="red")
axi.axis("off")

image

Matplotlib version

  • Operating system: Win 8.1
  • Matplotlib version: master
  • Matplotlib backend: Qt5Agg
  • Python version: 3.6
@tiffanygwilson tiffanygwilson mentioned this issue Jun 13, 2018
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@fredrik-1
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I am currently looking at and editing those docstrings and that behavior is correct according to the docstrings and code. plt.subplot delete overlapping subplots and fig.add_subplot doesn't.

I don't know why it is a difference in behavior.

@ImportanceOfBeingErnest
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So you think this is desired? That feels a lot as if suddenly plt.title would create a title below the axes while ax.set_title creates it above or so.

@fredrik-1
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I don't understand why the feature exist but it is well documented https://matplotlib.org/devdocs/api/_as_gen/matplotlib.pyplot.subplot.html#matplotlib.pyplot.subplot

@ImportanceOfBeingErnest
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I see. My bad. I guess this can be closed, although I think this pretty annoying and should probably be changed at some point.

@jklymak
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jklymak commented Jun 13, 2018

Matlab does this...

@anntzer
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anntzer commented Jun 13, 2018

We can't blame everything on MATLAB, see #7377 (comment) and surrounding discussion (I haven't tried for subplot though).

@jklymak
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jklymak commented Jun 13, 2018

Again, I wouldn't use plt.subplots and plt.subplot in the same figure and expect anything sensible to happen.

@anntzer anntzer mentioned this issue Sep 14, 2021
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@anntzer anntzer mentioned this issue Feb 6, 2022
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@QuLogic QuLogic added this to the v3.6.0 milestone Mar 29, 2022
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Deprecate auto-removal of overlapping Axes by plt.subplot{,2grid}. anntzer/matplotlib
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@QuLogic @anntzer @jklymak @ImportanceOfBeingErnest @fredrik-1