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May
25
comment RegionPlot not working as expected
@Kuba: Neither; I thought the question would be closed as a duplicate, but I was too lazy to check :) Turns out I was thinking of a ContourPlot question instead.
May
25
comment How to get shadows in Graphics3D?
That puts the lights in the right positions, but the problem that "the surface on the right is blue-illuminated although this surface is completely shaded from the blue light source" remains.
May
25
comment RegionPlot not working as expected
Jean-Claude is right. To create your plot you should make a ContourPlot of 2 a + b == 0 with RegionFunction -> Function[{a, b}, a > 0].
May
25
revised High-quality RegionPlot3D for logical combinations of predicates
added 2 characters in body
May
25
comment High-quality RegionPlot3D for logical combinations of predicates
Fantastic! Can you write a little about how it works? The Refine trick is very interesting and a little mysterious.
May
25
awarded  Self-Learner
May
24
comment Plotting John Conway's Hecatohedron
@Mario: Conway says to divide "each face of a cube into 16 smaller "square" faces in the obvious way", and this was the most obvious way I could think of. :) Perhaps it would be better to make the configuration nonflat by moving vertices outward, but that requires an arbitrary choice of perturbation and the smaller faces would not remain square. The plotted figure is at least topologically/combinatorially correct, but I can delete the answer if you feel it is not the desired solution.
May
24
comment High-quality RegionPlot3D for logical combinations of predicates
@Simon: That's neat! I wasn't aware of BooleanConvert.
May
24
answered Plotting John Conway's Hecatohedron
May
24
comment Plotting John Conway's Hecatohedron
@eldo: That's a different 100-faced polyhedron than the one described in the question.
May
24
revised High-quality RegionPlot3D for logical combinations of predicates
added 99 characters in body
May
24
revised High-quality RegionPlot3D for logical combinations of predicates
added 194 characters in body
May
24
asked High-quality RegionPlot3D for logical combinations of predicates
May
24
answered High-quality RegionPlot3D for logical combinations of predicates
May
23
revised Plot draws list of curves in same color when not using Evaluate
Since this is the de facto canonical version of the question, I've edited the title to include the words "list" and "color" so it's more likely to show up in suggested duplicates when users ask a new question. Please improve if needed.
May
23
comment Failing to get colours in Plot
Previously (possible duplicate): Difference in Plot when using Evaluate vs when not using Evaluate
May
23
comment How do I get a different (random) independent edge set each time I run FindIndependentEdgeSet?
This does not always give maximal matchings. So it solves the problem in the title of the question but not the one in the body...
May
22
comment Whats Mathematica exactly is?
LMWTFY: "Mathematica is a computational software program used in many scientific, engineering, mathematical and computing fields, based on symbolic mathematics."
May
21
awarded  Enlightened
May
21
comment Looking for ideas for handling a complicated fitting problem
Have you considered directly fitting a piecewise linear model?