Colorbar Tick Label Issues with ImageGrid

Greetings,

Recently I came across what I think is a bug in how
axes_grid1.ImageGrid creates colorbars of irregularly spaced
intervals. The colorbar itself is created fine, but the tick mark
labels are incorrect. However, when creating the same plot outside of
ImageGrid, the colorbar's tick mark labels are created correctly.

Is this actually a bug, or have I completely missed something?

I have a sample script that demonstrates the problem here:
https://gist.github.com/1086530

I have created an issue here:
https://github.com/matplotlib/matplotlib/issues/402

ยทยทยท

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Patrick Marsh
Ph.D. Student / Liaison to the HWT
School of Meteorology / University of Oklahoma
Cooperative Institute for Mesoscale Meteorological Studies
National Severe Storms Laboratory
http://www.patricktmarsh.com