15,231 reputation
13087
bio website quantdec.com
location Northeastern US
age 14
visits member for 2 years, 9 months
seen Oct 18 at 15:12

Consultant (environmental and spatial stats a specialty), expert witness, and teacher. I can be reached through (outdated but still valid) links posted on my web site.

Twitter: @WilliamAHuber // ASA-P website: http://amstatphilly.org/


Why waste time learning, when ignorance is instantaneous?

--T(iger) Hobbes.

For any complex problem there is a simple solution. And it's always wrong.

--[Mis?]attributed to H.L. Mencken by Dava Sobel, Longitude.


Oct
7
reviewed Reopen Outputting numbers symbolically
Sep
30
awarded  Explainer
Sep
19
awarded  Generalist
Aug
16
awarded  Nice Answer
Jul
30
awarded  Nice Answer
Jul
29
comment Clustering of space-time data
@s.s.o I found copies of the files on a backup drive and have shared them on Dropbox.
Jul
28
awarded  Nice Answer
Jul
10
reviewed Close Assumption for all the notebook
Jul
10
reviewed Close Positions of a string in a list
Jul
10
reviewed Close Assigning a given value if a function returns an error
Jul
10
reviewed Close Can mathematica rearrange an equation and solve/plot it?
Jul
10
comment Representing a Stencil of a Finite Difference Operator with Mathematica's Graphics3D
@rubenvb Thank you: I see what you mean. There are arbitrary elements to that diagram--it could be drawn in many equivalent ways. However, something like it could be implemented in Mathematica, provided we settle on rules to determine which sets of line segments to draw.
Jul
10
comment Representing a Stencil of a Finite Difference Operator with Mathematica's Graphics3D
@rubenvb That's a great idea. How would you implement it? In this diagram, renderings of such connections would all run into one another. I can think of some possibilities, such as introducing a light 3D grid, or a set of nested transparent cubes, or other such visual references, but perhaps you have a specific form of visualization in mind?
Jul
2
awarded  Nice Answer
Jun
2
awarded  Nice Answer
Apr
30
awarded  Necromancer
Apr
30
awarded  Nice Answer
Apr
30
revised Generating convex polyhedron from face planes?
added 50 characters in body
Apr
30
comment Generating convex polyhedron from face planes?
@level1807 Good catch! Although I haven't tested it, it looks like a bug to me--evidently from a typographical error. The intention was to to compare the chopped values to zero, not to chop the results of a floating point comparison (which makes little sense anyway). I will go ahead and modify the code in this answer. Thanks again.
Apr
30
comment Generating convex polyhedron from face planes?
@level1807 I cannot say: as you can see from my example, I had no trouble with $50$ faces. The possible explanations for what you are encountering could range from differences among MMA versions through floating-point errors through some kind of bug in my code. It could be related to the limitations described in the introduction to this answer. If you want to resolve this you will need to find as simple as possible an example that can be reproduced and then offer it in a new question. Good luck!