Yes, axes location in mpl, by design, is specified in normalized figure coordinate. And, for the colorbar axes to match the height (or width) of the parent axes always , you need to manually update the location of the colorbar axes. There are a few ways to do this. You may use event callbacks, use custom axes class, or use Axes._axes_locator attribute (which is a callable object that returns the new axes postion).
The axes_grid toolkit has some helper functions for this, and you may take a look if interested. http://matplotlib.sourceforge.net/examples/axes_grid/demo_axes_divider.html -JJ On Mon, Dec 14, 2009 at 2:18 PM, Thomas Robitaille <thomas.robitai...@gmail.com> wrote: > Hi, > > I would like to plot a colorbar which automatically gets resized when > I change the view limits and the aspect ratio of the main axes. So for > example: > > import matplotlib.pyplot as mpl > import numpy as np > > fig = mpl.figure() > ax = fig.add_axes([0.1,0.1,0.7,0.8]) > cax = fig.add_axes([0.81,0.1,0.02,0.8]) > > image = ax.imshow(np.random.random((100,100))) > > fig.colorbar(image, cax=cax) > > Is fine, but then if I interactively select a sub-region to zoom in > with a different aspect ratio, which I can also emulate by doing > > ax.set_ylim(40.,60.) > > The colorbar is then too high. If I then do > > ax.set_xlim(50.,55.) > > The height is fine but the position would need changing. > > Is there an easy way to get around this issue and have the colorbar > always at a fixed distance from the main axes, and also have it > resize? Or is the only way to write this all explicitly using event > callbacks? > > Thanks for any help, > > Thomas > > ------------------------------------------------------------------------------ > Return on Information: > Google Enterprise Search pays you back > Get the facts. > http://p.sf.net/sfu/google-dev2dev > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
