How do I lock matplotlib window resizing

Question

I'm working on an open source project that involves mouse interaction (via mpl_connect) with a scatter plot using pyplot in matplotlib. I was able to disable the bottom toolbar from appearing with:

matplotlib.rcParams['toolbar'] = 'None'

But I haven't found anything similar for locking the width/height of the window and disabling resizing. (Currently, the clickable areas are calculated on startup and do not change if the window is resized.) Is there a way to disable resizing for now until I implement a version that allows resizing without breaking?

user2314737 · Accepted Answer · 2015-11-24 12:23:32Z

Matplotlib supports several backends. To see what backend you're using (I have TkAgg):

>>> pyplot.get_backend() u'TkAgg'

Backend can be one of GTKAgg, GTK3Agg, GTK, GTKCairo, GTK3Cairo, WXAgg, WX, TkAgg, Qt4Agg, Qt5Agg, macosx (see http://matplotlib.org/faq/usage_faq.html#what-is-a-backend).

With a TkAgg backend you can prevent a window from resizing in width and height using resizable(False, False) (http://www.tkdocs.com/tutorial/windows.html)

from matplotlib import pyplot bck = pyplot.get_backend() print "Backend is " + bck mng = pyplot.get_current_fig_manager() if (bck == "TkAgg"): mng.window.resizable(False, False) elif (bck == "QT4Agg"): print "See previous answer" else: print "?"

If you have the required packages installed you can switch backends using for instance

>>> pyplot.switch_backend('QT4Agg')

ali_m · Accepted Answer · 2015-11-25 17:42:09Z

I'm not aware of a backend-independent way to do that, but there are various backend-specific solutions. For example, for the Qt backend you could use QWidget.setFixedSize:

import matplotlib matplotlib.use("Qt4Agg") from matplotlib import pyplot as plt fig, ax = plt.subplots(1, 1) win = fig.canvas.window() win.setFixedSize(win.size()) plt.show()

To fix the size of the canvas drawing area rather than the whole window you could use fig.canvas.setFixedSize instead.

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