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Moderator of Mathematica.SE and Celtic goddess.

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15h
comment How to draw multi curves in a graph with errorbars
I know this isn't the crux of the question, but wouldn't the data be more simply constructed using FoldList rather than a For loop? i.e. DATA=FoldList[#1+#2&, Table[{0, Random[], Random[]}, {n}], Table[{1/n, RandomReal[{-1, 1}]/20, RandomReal[{-1, 1}]/20}, {m-1},{n}]]. At the very least, the Table construct doesn't require an explicit j iterator.
1d
comment My code does not give the same results on mathematica 9 and 10
@Developer2000 - you should not assume that it was me who downvoted. In this case it was, and now that you have clarified what your question is, I am happy to do so. But please bear in mind that it is not usually considered appropriate to ask for votes to be changed. Downvoting is one of the incentives in StackExchange to ensure questions are improved. In this case, the system worked.
1d
comment Incorporating the minimum and maximum of the function in a Dynamic plot
Welcome to Mathematica.SE! It isn't really appropriate for us to do your homework for you, but here are some hints that might help. You can use calculus to find turning points, and show the turning point using Epilog, like this: Dynamic[Plot[f, {x, -10, 10}, Epilog -> {Red, PointSize[Large], Point[{With[{minx = First[x /. Solve[D[f, x] == 0]]}, {minx, f /. x -> minx}]}]}]].
Dec
11
comment What are the most common pitfalls awaiting new users?
@timoftebogdan. I disagree- this is a site about Mathematica, so it is not relevant if nested loop-itis is popular in other languages. And Map is a lot more readable than For...etc
Dec
10
comment Polar histogram
What's radiis? It's not specified in your code.
Dec
10
comment How to know the internal algorithms of functions like Predict or Classify?
This is an interesting question but it's not clear anyone but Wolfram staff could answer it.
Dec
10
comment Setting Page Scale
David, just want to reassure you that there is no shame in asking a duplicate question. We mark them this way to ensure that people get pointed to a canonical answer.
Dec
9
comment How to Plot inside a Do loop?
@SjoerdC.deVries - yes, thanks! Now why couldn't I find it? I feel a bit guilty picking up the rep, but I think my answer is more succinct than the ones to that question.
Dec
9
comment How to Plot inside a Do loop?
All, I'm pretty sure this is a duplicate but I can't find it just yet.
Dec
7
comment Error with numerical summation - how to specify “n choose r”?
Not in Mathematica syntax, it isn't. I think you need Binomial.
Dec
7
comment Error with numerical summation - how to specify “n choose r”?
what's choose?
Dec
2
comment Simulating from Custom Function
reference.wolfram.com/language/ref/MultinormalDistribution.html RandomVariate[MultinormalDistribution[parameters],numberofiterates]
Dec
2
comment Difference between Evaluation>>Quit Kernel and Quit[]
Aside from the obvious difference that Quit[] can be invoked from a text-based interface, while the menu command is only accessible from the front end? I'm not sure there is one.
Dec
2
comment Simulating from Custom Function
xvector = RandomReal[{0,1},100] ?
Dec
2
comment Simulating from Custom Function
This is just a guess without more information, but something using Map (/@) is probably what you want: mvBeta[rating,#,r]&/@ xvector.
Dec
2
comment Simulating from Custom Function
Welcome, Jim! Do you perhaps mean mvBeta[rating_,x_,R_]:=densityProduct[rating,x]*mvnCopula[copulaInput[rating,x]‌​,R], noting this: mathematica.stackexchange.com/a/18487/8 ? And what sort of input is x? Random real numbers? Some other distirbution?
Dec
2
comment How to force correct answers for Integrals of Cos[mx]*Cos[nx]?
In that case, I shall close this one as a duplicate. Thanks for letting us know.
Dec
1
comment Finding the intersection of a curve with an interpolation function
This doesn't seem related to the question. Please either edit your answer or pose it as a new question, perhaps with an accompanying self-answer.
Dec
1
comment FindDistributionParameters and Hypothesis Testing
I believe you need the KolmogorovSmirnovTest but better statisticians than me might have other suggestions. Also, I would strongly recommend against using Subscript for variable names. Try simple indices like \[Mu][1] instead.
Nov
22
comment How to keep first observation and delete other observations of each group in unbalanced Panel data
Oops! Typing too fast – thanks bel!