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Feb
2
awarded  Nice Answer
Feb
2
comment How to filter acoustic signal
The question is a bit unclear (squiggly marks on a graph is not a substitute for a precise specification) but this previous question seems related: mathematica.stackexchange.com/q/22528/484
Jan
28
revised Long running ToElementMesh with very “large” domains
bug confirmed by user21
Jan
27
comment Mollweide maps in Mathematica
Is there an inverse of GeoGridPosition? ImageTransformation is much faster than ImageForwardTransformation, I think.
Jan
27
comment Mollweide maps in Mathematica
Also, less chance of writing the equations wrong.
Jan
25
revised Numerical integration: complicated 2D integral seems to be poorly estimated
math formatting
Jan
24
comment Probability of multivariate normal being positive on each coordinate
I eagerly looked up your book because I wanted to see "more detail"... but there isn't any more detail, just a restatement of the same formula and a reference to Stuart and Ord's book.
Jan
24
revised Boundary sphere partial differential equation
deleted 108 characters in body
Jan
24
comment Fick's Law over Implicit Regions
The error message is totally unhelpful, but the problem is that t has to come first for some reason. You have to make it u[t, x, y] everywhere and do NDSolve[..., u, {t, 0, 1000}, {x, y} ∈ Ω], then it works.
Jan
23
revised Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
added 2 characters in body
Jan
23
comment 4 circular arcs, how plot the minimal surface?
Sorry, I would like to retract my close vote. This question asks for the minimal surface to extend beyond the boundary too.
Jan
23
comment 4 circular arcs, how plot the minimal surface?
There is now a solution at the generalized question Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
Jan
23
accepted Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
Jan
23
answered Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
Jan
22
comment Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
@Narasimham: Sounds like a good idea. And with ybeltukov's code, you can now try it! Let me know if you find anything interesting :)
Jan
22
comment How do I add custom deviation when using LinearModelFit?
LinearModelFit doesn't support NormFunction, but maybe you can get what you want using the Weights option. From the documentation: "With the setting Weights -> {w1, w2, ...}, the error variance for $y_i$ is assumed to be $\sigma^2/w_i$. By default, unit weights are used."
Jan
22
comment Long running ToElementMesh with very “large” domains
That should be x^2 + y^2 <= r^2 in your ImplicitRegion. But also, see my comment on the question.
Jan
22
comment Long running ToElementMesh with very “large” domains
I get all timings between 0.1 and 0.2 seconds on your code. Maybe a system-dependent issue? I have Mathematica 10.0.1.0 on Mac OS X Yosemite. (Also your copy-pasted result seems to be missing the first timing.)
Jan
22
revised Can Mathematica solve Plateau's problem (finding a minimal surface with specified boundary)?
fixed some errors
Jan
22
comment ListPlot3D. Only plots about half of the data in a 3D matrix
That's really odd. I can't find the problem, but here's a workaround for the time being: ListPlot3D[Transpose@Partition[Last /@ data, 15], DataRange -> {{100, 2000}, {0.01, 0.08}}, PlotRange -> All, ColorFunction -> "Rainbow"] i.stack.imgur.com/mwQmc.png