Matplotlib affecting tkinter window size and process behavior

Question

From a more complex example, i distilled this minimal example:

from tkinter import Frame, Tk

class Example(Frame):

    def __init__(self, master):
        super().__init__(master)
        plt.figure() # this makes the window smaller


def main():
    root = Tk()
    root.geometry("500x500")
    app = Example(root)
    root.mainloop()


if __name__ == '__main__':
    main()

The plt.figure() makes the window smaller and the process not end when I click the X on the top right. I really don't understand how a matplotlib command could cause this behaviour. A plt.close() allows me to kill the process by closing the window, but doesn't solve the size problem, and starts up the window behind other open windows.

To make the axes fill the figure (no padding), you need to set the axes position: `ax.set_position([0, 0, 1, 1])`. Don’t use subplotpars at all. Once you have the figure looking how you want, then work on the embedding. — Jody Klymak, May 18 '22 at 13:46
https://stackoverflow.com/questions/24535393/matplotlib-getting-subplots-to-fill-figure — Jody Klymak, May 18 '22 at 13:46
My question is just one: my gui shrinks in size when I use the generate_voronoi function instead of the dummy np.random, despite both returning numpy arrays, why is that? — rikyeah, May 18 '22 at 14:39

score 0 · Accepted Answer · answered Jun 23 '22 at 20:08

0

Solved it by using plt.Figure() instead. Also plt.savefig() poses this problem, so if anyone reading this has this same issue, you can try:

fig = plt.Figure()
# work on figure...
fig.savefig("file.png")

answered Jun 23 '22 at 20:08

rikyeah

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Matplotlib affecting tkinter window size and process behavior

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