Timeline for Color a Function by its Derivative

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Jan 14, 2015 at 11:48	comment	added	Michael E2		Corrected: It might be worth pointing out that the normals are normalized: `vn` is a list of $(−f_x,−f_y,1)/\sqrt{f_x^2+f_y^2+1}$. The gradients $(f_x, f_y)$ are given by `-vn[[All, 1;;2]]/vn[[All, 3]]` and so forth. (You're welcome, and sorry for the typo earlier.)
Jan 14, 2015 at 11:46	comment	added	kglr		@MichaelE2, thank you again.
Jan 14, 2015 at 7:56	history	edited	kglr	CC BY-SA 3.0	added 737 characters in body
Jan 14, 2015 at 3:10	comment	added	Michael E2		@Shaggy1135 In one way `Plot3D` is easier: One can use the `VertexNormals` as a basis for `VertexColors`.
Jan 14, 2015 at 2:34	comment	added	kglr		@Shaggy1135, good question. I think the approach suggested by Bob is more straightforward and it can be made to work for `Plot3D` too.
Jan 14, 2015 at 1:04	comment	added	Shaggy1135		Thank you for your answer. It's a shame that Mathematica requires such a complex procedure to acquire a seemingly simple result. I can certainly use your method, but this doesn't seem generalizable to Plot3D, which would be nice.
Jan 14, 2015 at 0:30	comment	added	Michael E2		Ah, that's what I was going to do! :) Just couldn't get back to it.... +1
Jan 13, 2015 at 23:24	history	answered	kglr	CC BY-SA 3.0