Re: [Matplotlib-users] tight_layout and ImageGrid

[Jae-Joon L. <lee...@gm...>]

ImageGrid creates axes for colobar even if cbar_mode=None. These axes for
colorbar are set to invisible, so usually they are harmless.
tight_layout, however, do not care whether the axes is visible or not, and
the warning is because of these "invisible" axes for colorbars.
For comparison, if you turn on all colorbar with cbar_mode="each", the
warning will go away.

You may manually remove colorbar axes from the figure if you want,

```
for ax in grid.cbar_axes: fig._axstack.remove(ax)
```

but do this only when cbar_mode=None.

So, I think the warning is harmless.
I will make a pull request that make tight_layout to ignore any invisible
axes soon.

Regards,

-JJ




On Wed, May 8, 2013 at 10:21 PM, Jonathan Slavin <js...@cf...>wrote:

> Hi,
>
> I wrote a short routine to look through a set of images that result from
> slightly different processing of the same data.  I want to compare three
> different images and be able to zoom them all in the same way and then
> move onto the next set of three.  The best way that I've found to do
> that so far involves using mpl_toolkits.axes_grid1.ImageGrid.  It all
> works fine.  I found that to get the most image on screen at once, using
> the tight_layout=True argument to plt.figure gives excellent results.
> My one question is that I get the following warning:
>
> WARNING: This figure includes Axes that are not compatible with
> tight_layout, so its results might be incorrect. [matplotlib.figure]
>
> As I say, the results are good, so it's not really a problem, but I do
> wonder about the source of the warngin -- and whether re-using the code
> in a different way in the future could lead to problems.  So, my
> question is: what is the problem pointed to by the warning and how could
> I avoid it (while still getting the same good results)?
>
> Regards,
> Jon
> --
> ______________________________________________________________
> Jonathan D. Slavin              Harvard-Smithsonian CfA
> js...@cf...         60 Garden Street, MS 83
> phone: (617) 496-7981           Cambridge, MA 02138-1516
>  cell: (781) 363-0035           USA
> ______________________________________________________________
>
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