Re: [Matplotlib-users] Slow imshow when zooming or panning with several synced subplots

[Sergi P. F. <spo...@gm...>]

> It seems that setting `interpolation='none'` is significantly slower than
> setting it to 'nearest' (or even 'bilinear'). On supported backends (e.g.
> any Agg backend) the code paths for 'none' and 'nearest' are different:
> 'nearest' gets passed to Agg's interpolation routine, whereas 'none' does an
> unsampled rescale of the image (I'm just reading the code comments here).
> Could you check whether changing to `interpolation='nearest'` fixes this
> issue?

Yes, changing it really speeds-up the interactivity! The delay is now
just a few ms, you can notice it's not completely smooth, but
perfectly usable. I'll compare if when zoomed in any
artifacts/distortion appear.

Thank you!