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9h
comment Determining the dimension of a probability distribution
@Daniel Well, for DistributionDomain the first guess is pretty obvious and it worked. But you can always try a bit of spelunking to find interesting stuff ;-) Use the (newer) code from GitHub.
10h
comment Determining the dimension of a probability distribution
@DanielMahler ?something* will search in all contexts that are in $ContextPath and ?*`something* will search in all contexts. The latter tends to return a lot of internal stuff that's not useful, so there's more to wade through. The warnings I gave you about undocumented/internal stuff are not meant to deter you, I sometimes use these too. But the problems can and do happen (I've been bitten several times.)
11h
comment Loading Statistics`Library`
It's a good idea to give some context for your question and link back to the original thread that prompted this. Statistics`Library` is not a package, so it can't be loaded. (Loading is triggered by the use of some other stats functions.) It is a context (namespace) containing functions meant for internal use: there's no documentation, no guarantee these functions will work properly or that they won't crash your kernel or cause memory leaks, and they're likely to change in future versions.
11h
comment Determining the dimension of a probability distribution
@DanielMahler Evaluate ?Statistics`Library`*. Keep in mind that anything that's not documented and not in System` might go away/change in the next version, might crash your kernel, or might give you a wrong result. Yes, these things do actually happen. I found DistributionDomain by making a good guess and searching for ?*Domain*.
1d
revised Different colors for nodes in tree plot
edited title
1d
revised Undocumented form for Extract
edited title
1d
revised Why does Arrow not work well with Scaled coordinates in 3D?
edited tags
2d
revised Determining the dimension of a probability distribution
added 164 characters in body
2d
comment Determining the dimension of a probability distribution
@Andy I think you're in a much better position to answer this ... Is DistributionDomain robust? It's not documented but it is in the System context.
2d
revised Determining the dimension of a probability distribution
added 126 characters in body
2d
revised Determining the dimension of a probability distribution
added 126 characters in body
2d
comment Determining the dimension of a probability distribution
I've never used this function before, I found it using some spelunking when I saw your question.
2d
answered Determining the dimension of a probability distribution
2d
comment Mathematica function Det has unexpected behavior
Please put all code in a code block, otherwise it is unreadable and people are not going to look at the problem. Formatting help is on the right of the edit box.
2d
comment Can ParallelDo speed up a counting problem?
For parallelization, the first thing to do is to try to formulate the problem in terms of functions with no side effects. That rules out using = on any global variable. So think about whether you can use ParallelTable instead (what Oleksandr said). Before trying to parallelize, also consider vectorization, i.e. doing arithmetic on arrays of numbers in one go. Many array operations are internally parallelized already.
Apr
17
comment How to compute variances from a matrix/table
If your data is stored in data, what does Dimensions[data] say?
Apr
16
awarded  Nice Question
Apr
16
comment Scan vs Map vs Apply
Do not define f when you do this, then it'll be much easier to understand what's going on. ...^2 threads over lists so your results don't reflect only the effect of Map, etc. but also this auto-threading. Take a look here and in the documentation page of each function. There are plenty of examples. For example the documentation clearly explains that Scan is the same as Map except it doesn't return anything. If is useful when f has a side-effect, e.g. f=Print.
Apr
16
answered How would I enable the Evaluate in place item of the Evaluate menu?
Apr
16
comment Mathematica9: NDSolve slows down after repeated calls
@user13754 This is not an official Wolfram site. We are just users like you. If this bug affects you then the best thing you can do is contact Wolfram support and complain about it, which I guess might help prioritize this problem.