Andrew Straw wrote:
> Hi All,
> 
> I have addressed what I think is a long-standing wart: zorder is mostly 
> ignored for imshow(). (See e.g. 
> http://old.nabble.com/Re%3A--Matplotlib-users--imshow-zorder-tt19047314.html#a19047314
>  
> ) The question is whether I should apply the attached patch.

Andrew,

Looks good to me.  I think you should go ahead.

Eric

> 
> The worry is that someone is relying on the old behavior of images being 
> underneath everything else. To a degree, this could be achieved by 
> having the default image zorder be lower than everything else. 
> Currently, imshow() creates images with zorder 1, which is pretty low on 
> the hierarchy, but there may be something lower. (The artist base class 
> default is 0, but the Line2D class bumps it to 2.) All tests pass with 
> the change, and manual inspection of several of the pylab_examples don't 
> show any difference before and after the patch.
> 
> -Andrew
> 
> 
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