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Apr
7
awarded  Nice Answer
Mar
29
comment Is it possible to draw this figure using Mathematica?
Those are art forms. Mathematica can make a stunning variety of them. Over the past year I have been using Mathematica to design geometric sculptures. Part of the process is looking for attractive 3D graphics which are made up of elements that I can put together in the real world. I recently saw an unanticipated Graphics3D result that I have been able to make in solid form. The result has energetic beauty.
Jan
2
comment Granularity of rounding affects whether coordinates make a Prism region
After experimenting some more with Prisms used as Regions, I am wondering whether a Prism is in general a usable Region when some of the coordinates are not exact numbers. A Mathematica Prism (a polyhedron that I would call a triangular prism) has two triangular faces and three rectangular faces. There seems to be a difficulty about whether the 4 vertices of each rectangular face are coplanar. It occurs to me that coplanarity of four points in three dimensions is tricky to decide unless the 12 numbers in the 4 coordinate triples are all exact (or symbolic). The problem is ill conditioned (?).
Jan
2
comment Granularity of rounding affects whether coordinates make a Prism region
Thanks for your extended comment. I see a message there about non-coplanar vertices, which I did not get, who knows why. Do you think that might be the problem with RegionQ etc? . . . . Incidentally, do you think your non-answer answer might lead others to think the question has been taken care of?
Jan
1
awarded  Yearling
Jan
1
asked Granularity of rounding affects whether coordinates make a Prism region
Dec
23
comment How can I get Mathematica to support the clipboard?
As an interim measure, it might be useful to know that Save As... in plain text format seems to perform the correct unicode translations, producing output which when viewed in the TextEdit app looks very similar to the notebook's appearance in Mathematica.
Nov
25
revised Is Mathematica worth it for me?
fix error
Nov
25
comment How can I export a notebook as a single huge pdf page?
Using Mac OS X 10.11.1 (and probably earlier versions as well) I can just print to pdf by choosing a clearly visible option in the print dialog. It seems to reproduce everything including graphics. However, there are often blank spaces between graphics and the end of the page. Probably those could be eliminated with some sort of PDF processing program, but that is speculation.
Nov
25
answered Mathematica suspends long calculation
Nov
25
revised Is Mathematica worth it for me?
add answer
Nov
24
revised Is Mathematica worth it for me?
improve
Nov
24
revised Is Mathematica worth it for me?
improve
Nov
24
answered Is Mathematica worth it for me?
Nov
24
comment Is Mathematica worth it for me?
And you should have seen how smart we were before the invention of pencils, paper or blackboards! We had to bash our heads against the wall of a cave. If you think that is easy, just try it. But only bash when you really have to. Don't let bashing turn into a crutch.
Nov
11
comment Histogram3D with various colors and textures on cuboids' faces
Amazing clarity and rotation speed!
Oct
23
revised How to count all cliques (not just maximal ones) in graphs?
Took out expressions of concern that my answer might not be correct.
Oct
23
comment How to count all cliques (not just maximal ones) in graphs?
I did not need any maximal cliques. That was Mathematica's idea!
Oct
23
comment How to count all cliques (not just maximal ones) in graphs?
Certainly not! Fully agree on that.
Oct
23
comment How to count all cliques (not just maximal ones) in graphs?
I just needed it to work in concise code