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Sep
27
comment Prime factorization
Ah, in that case you need EvenQ not IntegerQ. But this is a separate issue, so please don't edit your question or post a new one for that - a separate question would be closed as "easily found in the documentation".
Sep
27
comment FillingStyle and Opacity won't work together in Mathematica
This is good but doesn't quite replicate what he is looking for, which maps the colour value to the function value, not the x-coordinate.
Sep
27
comment How to automatically remove text from images?
Folks, I log on one sunny Sunday afternoon to find eight flags on these comments. I think you all need to take a breath, and please also realise that Mathematica.SE is a reasonably relaxed stack exchange. We moderators do not usually expect to get flags about comments being "too chatty". I recognise that the question could be interpreted as enabling watermark removal, but there are legitimate uses of the technique as well.
Sep
25
comment Solving Integral -syntax or interpretation problems
Dear Juan, to be clear, is your question about Wolfram Alpha, rather than Mathematica? If yes, the question is out of scope for the site and we will have to close it.
Sep
24
comment Documentation for undocumented symbols RandomMatrix and SharingList?
The first does actually turn up when one types <code>?Random`*</code> but the other one doesn't turn up as an existing symbol, at least in version 10.1. What version are you using?
Sep
24
comment Lagrange multipliers code runs forever
Given the equality constraint g, why don't you simplify the problem to a two-variable one, Minimize[{f[x, y, 1 - x - y], x + y < 1, m1 > 0, m2 > 0, m3 > 0, x > 0, y > 0}, {x, y}], and furthermore solve for the first-order conditions instead of using brute-force minimisation?
Sep
24
comment Best practices, tools, and snippets for manipulating notebooks, cells, packages, and help access?
@m_goldberg - thanks (and I'm going to delete all these comments now)
Sep
17
comment Eigenvalues FEAST method - performance is very variable
Hello, this sounds like an interesting question. Obviously you can't post your actual data if it's that large, but have you managed to isolate the issue to a small matrix that has the same sensitivity of performance to small changes?
Sep
17
comment Find the maximum Z in {(X + Y)==Z} using all the digits 0-9 only once
@Masirius - please lower the temperature. You might find this useful: mathematica.stackexchange.com/help/closed-questions The fact is, experienced users are empowered to "close" questions if they do not feel the question is a good fit for the site. Please understand that people volunteer their time here to answer questions, and it is disrespectful of their time when other people post questions that show no effort of their own. I hope you have a good learning journey with Mathematica.
Aug
19
comment Function involving For loop
Haha @Belisarius - I have nothing against infix in general, but you have to admit that ~ Or ~ is ungainly relative to ||.
Aug
5
comment How do I get an “animation” to play?
Dear @ChrisJJ, yes, this is an answer. As noted in the comment and in the post above, it is not currently possible to do this in Wolfram Cloud yet. That is the answer - the feature is not implemented in WPC, so it can't (yet) be done.
Aug
3
comment Dynamic programming: Fibonacci generator
@FrancsecoInsulla - your post has been flagged as "not an answer" by several users. But having reviewed it and the subsequent comments, I think you are on your way to having an answer. Please edit your post to incorporate some of the additional information you provided in comments, with a bit more explanation.
Jun
25
comment Which IDE do you use for Mathematica development?
While I'm sure many of us will have views, this is primarily opinion-based. Unless the community feels otherwise, we will probably have to close this question on those grounds. Could you perhaps redraft your question to be more consistent with the StackExchange model for "Answerable" questions? See mathematica.stackexchange.com/help/dont-ask Alternatively, you could try asking in chat?
Jun
10
comment Find the best fitting function for some experimental data
Ditto for d x versus dx.
Jun
10
comment How to create the new CDF logo by Mathematica?
It's a ParametricPlot3D with some kind of spiral defined by one parameter and the other tracing out a triangle whose size varies with position of the spiral. And then the same thing rotated and a bit of fiddling with Specularity. The exact curves weren't obvious to me so I'll leave it for others to do.
Jun
3
comment ListlogLogPlot can't work on y axis
That is strange. Are you sure your data is what you posted here?
Jun
2
comment Problem with writting into a matrix in Mathematica
Incidentally, MatrixPlot[S, ColorFunction -> ColorData["RedGreenSplit"]] can be quite pretty using my specification.
Jun
2
comment Problem with writting into a matrix in Mathematica
I'd meant to! Got distracted! Thanks!
May
15
comment Integral too oscillatory
@DanielLichtblau - could you please write this up as an answer?
May
15
comment Implementation of Partial Least Squares (PLS)?
This would be a really nice application of NestList, if only I had time today.