#17660: Document (and/or implement better) colormaps with 3d plots
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Reporter: kcrisman | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.5
Component: graphics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Perhaps ironically, in #12212 we now have a pretty nice syntax for using
colormaps with an arbitrary function (scaled to 1) with parametric and
implicit plots, but not "regular" 3d plots! We just have Harald's (edited
by Jason) example
{{{
sage: var('r v')
sage: cmsel = [colormaps['autumn'](i) for i in sxrange(0,1,0.05)]
sage: p = plot3d(0.2*(r**2 + v**2) + cos(2*r)*sin(2*v),(r,-2,2), (v,-2,2),
adaptive=True, color=cmsel, plot_points=10, opacity=0.9)
sage: p2 = sphere((0,0,0),1,color='black',opacity=0.5)
sage: (p+p2).show(aspect_ratio=(1,1,1), figsize=[7,3])
}}}
which isn't ideal.
We need to document this, or (much better) use the same syntax, and maybe
even enable it even when `adaptive=False`.
See also [http://ask.sagemath.org/question/7581/use-a-colormap-for-
implicit_plot3d/ this ask.sagemath question] and
[http://ask.sagemath.org/question/8964/how-to-color-a-3d-plot-by-z-level/
this one] and [http://ask.sagemath.org/question/11354/controling-the-
color-of-a-parametric-surface/ this one].
--
Ticket URL: <http://trac.sagemath.org/ticket/17660>
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