As far as I know, there is no easy way to do that with mpl (especially when image is involved). You may manually add ticks and ticklabels (but without using set_ticks, etc).
If you're using 0.99 and later, you may use axes_grid toolkit, but it has some cons. So, if you're going to use it, please read through the documentation. from mpl_toolkits.axes_grid.parasite_axes import SubplotHost import matplotlib.pyplot as plt import matplotlib.transforms as mtransforms fig = plt.figure(1, (4,3)) ax = SubplotHost(fig, 111) fig.add_subplot(ax) ax.imshow([[1,2],[3,4]], origin="lower") # transform from arcsecond to pixel tr = mtransforms.Affine2D().translate(+1,+1).scale(2., 2.) ax2 = ax.twin(tr) plt.show() Regards, -JJ On Wed, Oct 7, 2009 at 6:14 AM, Pim Schellart <p.schell...@gmail.com> wrote: > Hi Everyone, > > after trying every example I could find in the documentation, gallery > and online I thought let's give the mailing list a try. > I have an image displayed with imshow. > I would like to display the pixel coordinates on the left y and bottom > x axis and the physical coordinates (in arcseconds) on the right y and > top x axis. > I tried it with twinx & twiny but then only a part of the image is > shown (image is in pixel coordinates), I also tried creating a new > axes object with ax2=plt.subplot(1,1,1, frameon=False) but then the > image is no longer shown (this might be a bug). > Is this possible with the current version (0.99) of matplotlib? > > Kind regards, > > Pim Schellart > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
