MaplePrimes - answers and comments on Question, How do I obtain the output levels from contour plots?

Tricky way

Markiyan Hirnyk — Wed, 18 Jan 2012 00:36:13 Z

It can be done as follows.

> restart;
> with(plots):
> a := contourplot(x^2+y^2, x = -20 .. 20, y = -20 .. 20, contours = [80], coloring = [orange, orange], numpoints = 5000, thickness = 3, legend = typeset("level 80")):
> b := contourplot(x^2+y^2, x = -20 .. 20, y = -20 .. 20, contours = [120], coloring = [red, red], numpoints = 5000, thickness = 3, legend = typeset("level 120")):
> display(a, b, view = [-20 .. 20, -20 .. 20]);

Alec M.

pagan — Wed, 18 Jan 2012 01:47:11 Z

Alec Mihailovs answered this question here in 2006.

It is also possible to construct something that acts as a colorbar.

thanks...

ceilidhstheorem — Wed, 18 Jan 2012 04:56:14 Z

Many thanks for the tips and link to an old version of the question. Looks very promising!