[Mne_analysis] The arrowmap does not display arrows

[Alexandre Gramfort]

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hi Min,

can you open an issue here https://github.com/mne-tools/mne-python/issues

with some code to replicate?

do not forget to share what mne.sys_info() gives on your machine.

Best,
Alex

On Mon, Jul 20, 2020 at 3:05 AM M <wsxmxm at gmail.com> wrote:
>
>         External Email - Use Caution
>
> Hi,
> I am using MNE 0.20.6-Python 3.7.6 on a Windows OS. The example code plot_evoked_arrowmap.py on  https://mne.tools/stable/auto_examples/visualization/plot_evoked_arrowmap.html#sphx-glr-auto-examples-visualization-plot-evoked-arrowmap-py does not display arrows, as shown in the attachment. There is a UserWarning: Tight layout not applied. The left and right margins cannot be made large enough to accommodate all axes decorations. This warning comes from the plot_arrowmap()
> Is this a bug of plot_arrowmap() ? Can you help me with this? I want to generate arrowmaps based on MEG data.
> Thanks.
> Kind regards,
> Min
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