zorders are only meaningful among objects in a same axes. An easy workaround is to move the legend in ax1 to ax2.
ax2.add_artist(leg1) ax1.legend = None Regards, -JJ On Thu, Mar 22, 2012 at 10:13 PM, David Verelst <david.vere...@gmail.com> wrote: > Hi All, > > I am plotting on two different y-axes: one on the left (ax1) and one on > the right (ax2). Both share the same x-axes. The problem I am facing > relates back to the zorder of the legend (at least, that is what I > think): I want it to be on the foreground at all times. In order to do > so, I change the zorder of the ax1.legend (left y axes) such that the > ax2.plots (right y-axes) are under ax1.legend. However, that doesn't > work: all the plots on the right axes (so using ax2) end up above the > legend 1 on the left, despite having a lower zorder. > > Note that I am also giving the grids on both ax1 and ax2 a lower zorder > value compared to the legends, but the grid still ends up on top of > legend 1 on the left. > > # version info: > > # Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41) [GCC 4.4.3] on linux2 > > # NumPy 1.6.1, Matplotlib 1.1.0 > > import pylab as plt > > import numpy as np > > # plotting on the left y-axes, > > ax1 = plt.axes(zorder=10) > > ax1.plot(range(0,5,1), 'r', label='ax1 ax1 ax1 ax1', zorder=11) > > ax1.plot(np.arange(3,4.1,1), 'r--', label='ax1 ax1 ax1 ax1', zorder=12) > > gr1 = ax1.grid(zorder=13) > > # legend of the left y-axes, force high zorder > > leg1 = ax1.legend(loc='upper left') > > leg1.set_zorder(30) > > # plotting on the right y-axes, > > ax2 = plt.twinx() > > ax2.set_zorder(20) > > ax2.plot(range(4,-1,-1), 'b', label='ax2 ax2 ax2 ax2', zorder=21) > > ax2.plot(np.arange(4,2.9,-1), np.arange(3,4.1,1), 'b--', > > label='ax2 ax2 ax2 ax2', zorder=22) > > gr2 = ax2.grid(zorder=23) > > # legend of the right y-axes, force high zorder > > leg2 = ax2.legend(loc='upper right') > > leg2.set_zorder(40) > > print '======= zorder:' > > print ' ax1: %i' % ax1.get_zorder() > > print ' ax2: %i' % ax2.get_zorder() > > print 'leg1: %i' % leg1.get_zorder() > > print 'leg2: %i' % leg2.get_zorder() > > > What am I missing here? > Thanks, > David > > > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
