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Apr
23
revised Integrating a function over a surface integral
added 17 characters in body
Apr
23
comment Creating a nonlinear phase portrait
I don't understand what the question is.
Apr
22
comment Something like MinDetect but for saddle points
Related (possible duplicate): Identifying critical points/lines of 2/3D image/cubes
Apr
17
comment How to ensure that Polygon[list] plots a simple polygon?
Some more possible solutions are given in the duplicate question Rebuild a polygon so it doesn't self intersect.
Apr
15
comment Plotting Riemann surface of $\sqrt{z}$ in rectangular coordinates
Sqrt will only give you one branch of the complex square root.
Apr
13
revised How to draw a tropical surface?
added 8 characters in body
Apr
13
revised How to draw a tropical surface?
added 2 characters in body
Apr
13
revised How to draw a tropical surface?
edited tags
Apr
13
answered How to draw a tropical surface?
Mar
26
comment Floating point arithmetic bug caused by Table[]
What Every Computer Scientist Should Know About Floating-Point Arithmetic
Mar
15
revised How can I make a 3D Plot with NDSolve?
added 30 characters in body
Mar
15
comment Stitch edge of disk to edge of square in 3D space (with deformations)
@djp: Given the example of paper cutouts, I assume that the deformation is meant to be isometric. See also: dForm
Mar
13
comment How to enhance a fuzzy image
A disk is a better model for defocus blur than a Gaussian function. Set r = 6; k = DiskMatrix[r]/Total[DiskMatrix[r], Infinity]; and try ImageDeconvolve[image, k, Method -> "RichardsonLucy"] or ImageDeconvolve[image, k, Method -> {"TotalVariation", "NoiseModel" -> "Laplacian"}]. The results aren't super fantastic, but they're something.
Mar
13
comment How to enhance a fuzzy image
Blurring is a form of convolution. To undo it, what you want is deconvolution, i.e. ImageDeconvolve. However, your image also has a lot of noise, which makes deconvolution very hard.
Mar
10
comment How can I make a pretzel shape using bezier curves?
You'll have better luck if you make your control polygon have three-fold symmetry.
Mar
10
awarded  Nice Answer
Mar
4
comment Determine if all the zeros in a list occur at the end
Is the speed the same if you define test5 = OrderedQ @* Reverse @* Unitize?
Mar
3
comment How to draw a particular contour line in ListDensityPlot?
ListDensityPlot[..., MeshFunctions -> {#3 &}, Mesh -> {{0.8}}]
Feb
28
comment How to find soccer balls in an image?
After the update the problem is suddenly much much much harder.
Feb
25
comment How to generate mesh and calculate volume of 3d object?
How did you generate the last plot?