#12212: Colormap for implicit_plot3d and parametric_plot3d
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Reporter: niles | Owner: jason, was
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: graphics | Resolution:
Keywords: colormap, plot | Merged in:
Authors: Joris | Reviewers: Frédéric Chapoton,
Vankerschaver, Frédéric Chapoton | Niles Johnson
Report Upstream: N/A | Work issues:
Branch: u/chapoton/12212 | Commit:
Dependencies: | 3ac721d126fee2e7704b6db62e5152afbf49a19c
| Stopgaps:
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Comment (by kcrisman):
> Maybe the different behaviour comes from here..
This confirms my thought that for some choices of colormaps and color
evaluation functions the colormaps just don't work right with jmol (too
large of values or too close to zero or whatever). For instance,
{{{
var('x,y,z')
t = (x+y+z).function(x,y,z)
cm = colormaps.terrain
implicit_plot3d(x^2+y^2+z^2==4, (x, -3, 3), (y, -3,3), (z, -3,3),
color=(t,cm))
}}}
works fine in jsmol and jmol, while with the sin functions you were using
it does not. I think the "blank" ones are ones where the values are too
close to zero, or something like that. Switch to
{{{
cm = colormaps.flag
}}}
and you will have a big surprise - Tachyon, jmol, and jsmol are all
different!
--
Ticket URL: <http://trac.sagemath.org/ticket/12212#comment:134>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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