Hi, I want the colorbar to show the real fourier amplitudes, not the amplitudes after rescaling to 0..1. In other words: the colorbar created by imshow should have the same values as the one created by contourf.
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
