Opened 7 years ago
Last modified 5 years ago
#17660 new defect
Document (and/or implement better) colormaps with 3d plots
Reported by:  kcrisman  Owned by:  

Priority:  major  Milestone:  sage6.5 
Component:  graphics  Keywords:  
Cc:  niles, chapoton  Merged in:  
Authors:  Reviewers:  
Report Upstream:  N/A  Work issues:  
Branch:  u/chapoton/17660 (Commits, GitHub, GitLab)  Commit:  fbd53f8fba565233e91eaae6192bbceb5107ff77 
Dependencies:  Stopgaps: 
Description
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 this ask.sagemath question and this one and this one.
Change History (3)
comment:1 Changed 7 years ago by
 Branch set to u/chapoton/17660
 Commit set to 8fc72c35f2469a40c32eba6f99a6e6fe3a293757
comment:2 Changed 5 years ago by
 Commit changed from 8fc72c35f2469a40c32eba6f99a6e6fe3a293757 to fbd53f8fba565233e91eaae6192bbceb5107ff77
Branch pushed to git repo; I updated commit sha1. New commits:
fbd53f8  Merge branch 'u/chapoton/17660' in 8.0.b9

comment:3 Changed 5 years ago by
one example added in #23859
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I just had a first look at the question.
New commits:
trac #17660 first exploration of the problem