On Sun, Dec 16, 2012 at 4:41 PM, David Huard david.hu...@gmail.com wrote:
Hi all,
I'm wondering if anyone knows how to compute colorbar limits (vmin, vmax)
based only on the visible portion of the figure. My use-case is a
pcolormesh(x, y, z) drawn over a Basemap instance. The coordinates x and y
cover the entire globe, but I'm only mapping the Arctic. What happens is
that the normalization is done over the entire z array, while only a subset
of z actually appears on the map. The colors appearing on the map thus
cover only a small fraction of the entire color range.
From what I managed to understand, pcolormesh creates a collections of
patches colorcoded based on the array attribute. So my question is if there
is a builtin way to know which items of this collections are clipped so I
can mask this part of the array ?
Thanks a lot,
David
As far as I know, no, there is not a built-in way of doing so. There is
the clipping mechanism to prevent drawing things outside of bounding boxes
(used for easy zooming and panning among other things), but as far as I
know, that is done mostly in the backends, and it doesn't provide
information on which elements in the array was chosen drawn. I would
suggest making a feature request on the github page, and hopefully, someone
will have an epiphany on how to implement such a feature (maybe with the
scalar mappable objects?).
Cheers!
Ben Root
--
LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
Remotely access PCs and mobile devices and provide instant support
Improve your efficiency, and focus on delivering more value-add services
Discover what IT Professionals Know. Rescue delivers
http://p.sf.net/sfu/logmein_12329d2d___
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
