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Mar
29
comment List reversion inspired by Python
This works: Range[10][[10 ;; 1 ;; -1]]. It's not an idiom I've used, but found it pretty easily in the documentation.
Mar
29
comment List reversion inspired by Python
Is there a reason that you don't want to use the Reverse command?
Mar
28
comment Matrix Determinant
@belisarius The OP typed in exactly like that. All I did was add some leading spaces so that the input would be formatted on the webpage here, as opposed to all run together the way it was. Like everyone, I don't know if that format is correct or not; only the OP can say.
Mar
28
comment Matrix Determinant
I edited your "fortran output" just a bit further, to make sure it was formatted properly, rather than wrapped. Are you saying that you have a text file in exactly that form, with possibly more rows for a larger matrix?
Mar
27
comment Create triangular mesh from random list of points
@Szabolcs Hey, I upvoted! I was joking when I said I wasn't sure if I liked it.
Mar
27
comment Combining two notebooks
Can you be more specific about the nature of your"variables and functions"? How huge are we talking? You might be able to place them in a .m file and read that in. Or you might be able to place them in an initialization cell in a separate (collapsed) section in the same notebook. A little more information might help.
Mar
27
comment Create triangular mesh from random list of points
@Szabolcs It's just that ListDensityPlot is about the last thing I would've thought of. Back in the day, this returned a DensityGraphics object. I guess it now returns a GraphicsComplex with polygons. I use the Graphics`Mesh stuff all the time, though.
Mar
27
comment Create triangular mesh from random list of points
Hmm... I can't decide whether I like this or not. I guess I better upvote, just in case.
Mar
27
comment Create triangular mesh from random list of points
@ThomasJebbSturges No problem!
Mar
27
comment Create triangular mesh from random list of points
@ThomasJebbSturges Does the edit help?
Mar
27
comment Create triangular mesh from random list of points
You now have two upvotes and with them, the vaunted power to post images! Please post responsibly. :)
Mar
26
comment Generating a Sierpinski carpet
@whuber Almost - have you seen the packages on my Mathematica page: facstaff.unca.edu/mcmcclur/Mathematica.html These include not just image generation code but code to compute Laplacians on self-similar sets and code to compute the dimensions of self-similar sets of finite type, where the open set condition is not satisfied.
Mar
26
comment Dynamic boundaries for FindRoot
@gpap Rather than restrict the functions, as you suggest, perhaps you could redefine the functions via reflection. That way you could simply recover the correct value by re-reflection, if necessary.
Mar
25
comment Gram Schmidt Process for Polynomials
I happen to be teaching exactly this topic in my PDE class today. My Legendre polynomial notebook is the last link on our class webpage: sites.google.com/a/unca.edu/mark-mcclure/home/classes/…
Mar
21
comment Plotting an array of data onto a sphere
@ThomasJebbSturges Yes, I got your messages now that you've flagged me. I believe that you would be pinged too, if I'd provided and answer, rather than just edited your question. I wasn't able to answer because the question had been closed as a duplicate. It's also similar to my answer here: mathematica.stackexchange.com/questions/15047/… I'll make a small edit to clarify the # issue, as well.
Mar
20
comment Why is this Mandelbrot set's implementation infeasible: takes a massive amount of time to do?
@hhh They come with the book! An antiquated concept, I know.
Mar
20
comment How to find all graph isomorphisms in FindGraphIsomorphism
Awesome! Although it worked for my purposes "Rough around the edges" is a polite description. The package was originally written to help some REU students solve some specific questions in graph theory. Thus, the current available functionality is small and chosen for a specific task. But it is a start and should be easy to add to, for those familiar with C programming and MathLink. And, thanks to Szabolcs for getting the package to work with the latest version of igraph!
Mar
20
comment Why is this Mandelbrot set's implementation infeasible: takes a massive amount of time to do?
@acl Thanks! I can live without the upvotes; I tend to be conservative with mine, anyway.
Mar
20
comment Why is this Mandelbrot set's implementation infeasible: takes a massive amount of time to do?
@halirutan What was the OP asking?
Mar
20
comment Why is this Mandelbrot set's implementation infeasible: takes a massive amount of time to do?
+1 I swear I didn't even know that ArrayPlot accepted complex values!