On Thu, 30 Jul 2009 09:41:43 -1000
Eric Firing <efir...@hawaii.edu> wrote:
> Jae-Joon Lee wrote:
> > I don't think there is any user-visible support for registering a
> > custom colormap.
>
> Now there is: svn r7309. Its use is illustrated via a modification of
> examples/pylab_examples/custom_cmap.py.
Awesome, works just as I need it! Keep up the good work!
Now I'm one step closer to abandoning matlab :-D
Philipp
>
> With just a little more work, we could make it so that anything taking a
> "cmap" kwarg will accept either a Colormap instance or the name of a
> registered instance (including builtins). Maybe I will do that later today.
>
> Eric
>
>
> > However, it seems to me that adding the colormap to
> > matplotlib.cm.datad distionary is enough.
> > Note that the value need to be a dictionary of RGB specification, not
> > the actual colormap instance.
> >
> > for example,
> >
> > mycolormap = {'blue': ((0.0, 0.40000000000000002, 0.40000000000000002),
> > (1.0, 0.40000000000000002, 0.40000000000000002)),
> > 'green': ((0.0, 0.5, 0.5), (1.0, 1.0, 1.0)),
> > 'red': ((0.0, 0.0, 0.0), (1.0, 1.0, 1.0))}
> >
> > matplotlib.cm.datad["mycolormap"] = mycolormap
> > rcParams["image.cmap"]="mycolormap"
> >
> > Having a function (like jet in pylab) would not be also difficult.
> > Take a look at the definition of "jet" function (for example) in the
> > pylab.py.
> >
> > We may be better to have a proper way to register a custom colormap.
> > I'll try to take a more look later, but any patch will be appreciated.
> >
> > Regards,
> >
> > -JJ
> >
> >
> >
> > On Thu, Jul 30, 2009 at 3:48 AM, Philipp
> > Lies<philipp.l...@googlemail.com> wrote:
> >> Does no one have an idea? If not, this is a severe usability bug!
> >>
> >> Philipp Lies wrote:
> >>> Hi,
> >>>
> >>> I just created a hsv-like color map with gray levels only, now I'd like to
> >>> use this as default color map. But how? Calling it like hsv() does not
> >>> work and I did not find a hint in the documentation how to set a user
> >>> defined color map interactively as default color map.
> >>>
> >>> Cheers
> >>>
> >>> Philipp
> >>>
> >> --
> >> View this message in context:
> >> http://www.nabble.com/setting-user-defined-color-map-as-default-tp24587528p24733739.html
> >> Sent from the matplotlib - users mailing list archive at Nabble.com.
> >>
> >>
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--
Philipp Lies
Max Planck Institute for Biological Cybernetics
Computational Vision & Neuroscience Group
Spemannstr. 41
D-72076 Tuebingen
Germany
Phone: +49-7071-601-1788
Fax: +49-7071-601-552
E-Mail: philipp.l...@tuebingen.mpg.de
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