Is there some way to obtain the maximum and minimum colormap function
values from the resulting plot?
Colormap functions must return a value between 0 and 1. Therefore, if one
is trying to color map a function, one must know the maximum and minimum
value of that function over the plotted domain. For example, I've got a
color-mapped plot:
theta,phi = var('theta phi')
cm = colormaps.coolwarm
def c(theta,phi): return ((2/3)*(1+sin(theta)*sin(phi))-(1/3)*(1+sin(theta)*
cos(phi))-(1/3)*(1+cos(theta)));
spherical_plot3d(2,(theta,0,2*pi),(phi,0,pi),color=(c,cm))
Since sphereical_plot3d evaluates all of the colormap function values, it
should be able to return the maximum and minimum. That would enable me to
offset and scale the colormap function.
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