Re: [Matplotlib-users] Navigation Slowness in Matplotlib with Subplots

[Michael D. <md...@st...>]

The gist here is that `subplot` doesn't really know when the new subplot 
exactly overlaps another -- it's essentially unaware of what's already 
there.  We could do some deduplication there.  However, it's also a 
completely legitimate use case to create two subplots in the same 
location, and then change the location of the ticks, formatting and 
scale on one of them and not the other.  And we can't really guess which 
the user intends to do.  Your workaround seems like a good one, in the 
absence of really changing the API here so matplotlib can know the 
user's intent.

Mike

On 11/26/2013 08:23 PM, John Gu wrote:
> Hello,
>
> I had submitted a similar issue back in October of 2011.  I'm using 
> matplotlib 1.3.1.  Here's the code to produce the issue:
>
> f = figure()
> for i in xrange(9): subplot(3,3,i+1)
> f.axes[0].plot(range(100))
>
> Now try to drag the line in the first subplot around.  It's extremely 
> slow.  Now do the following:
>
> for ax in f.axes[1:]: ax.axison=False
>
> Now, when you drag the line around in the first subplot, there's a 
> huge difference.  Basically, it seems like that matplotlib is 
> attempting to redraw a lot of unnecessary things on the figure.  Is 
> there an easy fix to this?
>
> Thanks,
> John
>
>
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