get size of maximized matplotlib figure

Question

I'd like to open a matplotlib figure maximized and I'd like to get the size of the figure in inches. This yields the same value no matter if the figure is maximized or not:

import matplotlib.pyplot as plt

# figManager = plt.get_current_fig_manager()
# figManager.window.showMaximized()

fig = plt.gcf()
height = fig.get_size_inches()[1]
print(height)

4.8

Any hints?

I cannot reproduce the same results. When I maximize the figure, your code yields different value for me. — ywbaek
– ywbaek, Commented Jun 4, 2020 at 13:38
@ywbaek Interesting! By maximizing, you mean commenting in the figManager lines, right? Any idea what the issue might be? — Nico Schlömer
– Nico Schlömer, Commented Jun 4, 2020 at 13:42

DavidG · Accepted Answer · 2020-06-04 15:21:13Z

2

I suspect this is due to the time is takes to maximise/draw the figure itself. You could be catching the size of the figure before it is resized.

Introducing any length of pause solves the problem:

import matplotlib.pyplot as plt

figManager = plt.get_current_fig_manager()
figManager.window.showMaximized()

plt.pause(0.0001)

fig = plt.gcf()
height = fig.get_size_inches()[1]
print(height)
# 9.56      Commenting out the pause gives me the result 4.8

answered Jun 4, 2020 at 15:21

DavidG

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