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visits member for 2 years, 6 months
seen Jun 24 '13 at 0:02

No, his mind is not for rent
to any god or government.
Always hopeful, yet discontent.
He knows changes aren't permanent,
but change is.

— Rush, Tom Sawyer


Taking an externally-imposed and much-needed break from SE activities.

E-mail (flipped ROT13): zqd˙ʎʌuzʇ@ʇɐʌǝɥʇʌssqɹǝɥɟuɹʎɔ
Any code I've posted here I place under the WTFPL.


Sep
13
comment How to output an expression as a Dot[] product
Tell me, why shouldn't I close this question as a duplicate of this?
Sep
13
comment Identifying `Indeterminate` elements
MatchQ[] could be an alternative here, methinks...
Sep
13
revised Clustering a bivariate data set with Mathematica
edited tags
Sep
13
revised How to plot rectangles aligned by their center?
edited tags
Sep
13
revised Problem in RegionPlot3D
deleted 17 characters in body; edited title
Sep
13
comment Fitting a spline to data with FindFit?
@witkamp, with what you've just said, I'm not even entirely sure that a smoothing spline is the best way to go about it. As a start, could you edit your question to talk a bit about the provenance of your data?
Sep
13
comment Improve Plot3D resolution near max/mins
@Plato, you mean the method GrafEq uses? I suppose you could do interval arithmetic in Mathematica...
Sep
13
revised Calling MATLAB from Mathematica
edited tags
Sep
13
revised Fourier Transform of a Step Function
edited tags
Sep
13
revised What is the best way to create a correlation matrix heatmap with values?
edited tags
Sep
12
revised which is better, using Assert[] or manual checks on arguments and other computations?
edited tags
Sep
12
revised Plotting discontinuous functions without spurious vertical segments
edited tags
Sep
12
revised discrete Fourier transform
edited tags
Sep
12
revised Marking points of intersection between two curves
deleted 16 characters in body
Sep
12
comment Fitting a spline to data with FindFit?
@Ajasja, Eureqa?
Sep
12
revised Mathematica list element sort
added 2 characters in body; edited tags
Sep
12
comment How to discretize a nonlinear PDE fast?
Whee, poles... :D
Sep
12
comment Generating an ordered list of pairs of elements from ordered lists
Any reason why you chose For[] instead of Do[]? :)
Sep
12
comment Marking points of intersection between two curves
@Oleksandr, for exclusions for the tangent function, it's slightly neater to use Exclusions -> {Cos[x] == 0}...
Sep
12
comment Fitting a spline to data with FindFit?
If you're expecting to be doing high-order polynomial fits, I would recommend using LinearModelFit[], taking one basis function at a time, and monitoring the value of "AdjustedRSquared" to guard against overfitting (or use the fancier methods, such as cross-validation).