I think I'm lost.
> In other words: the colorbar created > by imshow should have the same values as the one created by contourf. But, in your original post, your plotting two different image. with contourf, you're drawing "omega*10000", but with imshow, you're drawing "omega". Are you saying that these two should have same colorbar, although there is a factor 10000 difference? And, as far as I know, colorbar shows values of the original input. What is the min and max of omega, and what do you expect your colorbar show? If possible, please post a complete example so that others can test. Regards, -JJ > > I am not sure how I can use vmin and vmax to achieve that effect. The > scaling is done correctly, it's just that the colorbar should show the > original, and not the rescaled values. > > Thanks, > -Niko > > > I did not try vmin and vmax, because > On 04/26/2010 02:31 PM, Jae-Joon Lee wrote: >> Did you try to change vmin, vmax? >> >> http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.imshow >> >> If this is not what you want, please describe more explicitly why the >> colorbar is wrong. >> >> Regards, >> >> -JJ >> >> >> On Mon, Apr 26, 2010 at 11:37 AM, Nikolaus Rath <nikol...@rath.org> wrote: >>> The problem with imshow is, that it rescales the data so the >>> colorbar does not show the correct amplitudes (see >>> www.rath.org/imshow.png): >>> >>> ctr = ax.imshow(omega, cmap=cm.YlOrRd, aspect='equal', >>> interpolation='nearest', >>> origin='lower', extent=(-(N-1)/2, (N-1)/2, 0, M-1)) >>> fig.colorbar(ctr) >>> ax.set_xlim(xmin= -(N - 1) / 2, xmax=(N - 1) / 2) >>> ax.set_ylim(ymin=0, ymax=M - 1) >>> fig.show() >>> >>> Is there a way to get the proper amplitudes into the colorbar? > > > -Nikolaus > > -- > »Time flies like an arrow, fruit flies like a Banana.« > > PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C > ------------------------------------------------------------------------------ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
