You cannot set different tick positions for bottom and top x-axis in the same axes. What you can do is to make another axes at the same location and use it to draw ticks at top. Take a look at
http://matplotlib.sourceforge.net/examples/api/two_scales.html But it may not be an ideal solution for you as this enforces adjustable="datalim". You may try to use my custom axes class. http://dl.getdropbox.com/u/178748/mpl/parasite_axes2.py import matplotlib.pyplot as plt import numpy as np from parasite_axes2 import SubplotHost fig = plt.gcf() ax = SubplotHost(fig, 1, 1, 1) fig.add_subplot(ax) Z = np.arange(100).reshape(10,10) im = ax.imshow(Z) ax2 = ax.twin() ax2.set_xticks([0, 3, 6, 9]) ax2.set_yticks([1,3,5,7,9]) plt.draw() plt.show() Note that it enforces that ax2 has a same viewlim as the original axes. You cannot manually change it. -JJ On Sun, Feb 1, 2009 at 12:41 PM, Eli Bressert <bress...@head.cfa.harvard.edu> wrote: > Hi, > > I'm looking into customizing the the tick positions on an imshow plot. I > found that you can do this by doing > > img = imshow(data) > img.ax.xaxis.set_ticks([100.,200.]) > > > The problem with this method is that it moves the tick positions on the > bottom and top x axis. What if I wanted to do have the top axes show > ticks at slightly different positions than the bottom one? Any ideas or > suggestions would be greatly appreciated > > -Eli > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
