matplotlib-users Mailing List for matplotlib

Have you tried setting "useblit=False"? If that works, I wonder if we
accidentally broke something in the recent widget interactivity work...


Ben Root

On Fri, Dec 11, 2015 at 7:48 PM, Edward Richards <edw...@gm...>
wrote:

> I am selecting a region of a color plot with span selector, and I would
> like the selected region to stay highlighted. I found the span_stays flag,
> but the selection rectangle still disappears after I release the mouse.
>
> Any help is appreciated.
> Thanks,
> Ned
>
> My backend is 'TkAgg'
>
> I am running the script from python3.4 at the command line, my version is:
>
> Python 3.4.3 (default, Jun 19 2015, 05:46:30)
> [GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux
> Type "help", "copyright", "credits" or "license" for more information.
>
> >>> print(matplotlib.__version__)
> 1.5.0
>
> code example:
>
> import numpy as np
> import matplotlib.pyplot as plt
> from matplotlib.widgets import SpanSelector
>
> test_data = np.random.randn(1000, 1000)
> fig, ax = plt.subplots()
> ax.imshow(test_data)
>
> def selection(x1, x2):
>      """This function isn't the point"""
>      pass
>
> span = SpanSelector(ax, selection, 'horizontal', useblit=True,
>                      rectprops=dict(alpha=0.5, facecolor='red'),
> span_stays=True)
> plt.show()
>
>
>
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