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bio website nl.linkedin.com/in/scdevries
location Utrecht, Netherlands
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visits member for 2 years, 9 months
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1d
comment Open a .txt file in Mathematica
There ain't such thing as a ".txt file written for Mathematica".
Oct
18
comment Unexpected behavior from Indexed
Interesting. I managed to fully miss this function's introduction.
Oct
18
comment Concisely returning a position in an array with an index variable
@Mr.Wizard Really? That would surprise me ;-)
Oct
18
comment Concisely returning a position in an array with an index variable
@Mr.Wizard OK, but perhaps you should have provided that link in your earlier comment.
Oct
18
comment Summing subsets of array
@DumpsterDoofus I know, but what does it do there? I mean, Oded defines frk informally as using two arguments and then calls it with three.
Oct
18
comment Summing subsets of array
What does the third argument of frk do?
Oct
18
comment Concisely returning a position in an array with an index variable
@Mr.Wizard It's not that easy to find I guess, and I feel that the burden of proof is on those that are calling 'duplicate'.
Oct
16
comment Visualization of 3D data by Raster3D and Import
I don't think you can do it that way. Raster3D needs a 3D table (if using gray levels) or a 4D table (if using RGBA), which is not possible in a flat file format such as .txt. You'd need an intermediate conversion step, in which you partition a flat 2D table into a 3D or 4D table.
Oct
15
comment What does this Append expression do?
As I understand this code (restricted by the missing specification of 'clustered' and 'default') is that it builds a list of replacement rules, appending a default rule at the end. _ matches everything. RandomChoice is probably used to break ties in the results of Commonest.
Oct
13
comment Mathematica output containing the variable name
I'll never understand the need for this. Just look at your example. Looks pretty redundant to me. Anyway, $Post may be useful here.
Oct
13
comment No response when try to solve differential equations
How long do you have this license? Does 1+1 evaluate?
Oct
13
comment No response when try to solve differential equations
@Ymareth or "input"?
Oct
10
comment QuantilePlot silliness
Try to add in Magnify before rasterization.
Oct
10
comment Default starting location of “Save as…” dialog in OS X
So you agree the question is the same, but you don't like the accepted answer (BTW: there was no accepted answer)? You should have commented there then, and not posted a new question. I'll vote to close this question as a duplicate.
Oct
10
comment Default starting location of “Save as…” dialog in OS X
How is this question different from the previous one?
Oct
10
comment Default starting location of “Save as…” dialog in OS X
As developer John Fultz points out in a comment below that question NotebookBrowseDirectory doesn't work on MacOS.
Oct
9
comment A bug in the overloading of MemberQ and FreeQ for Association?
AFAIC yes, and you were right with your update concerning the documentation. I hadn't seen the updates to these parts of the documenation.
Oct
8
comment A bug in the overloading of MemberQ and FreeQ for Association?
I believe the error is not the printing of Association but that it prints anything at all. Association is atomic and it should have no (visible) members. Compare with expr3=Graph[{1->2}].
Oct
8
comment Table of central binomial coefficients
I don't get that error, but I see that you haven't defined the function B for one argument, yet you call it with one. Also this functions is deeply recursive and could use some memoization to speed up things. Perhaps the function Binomial is useful to you too.
Oct
8
comment Is there a command like meshgrid in Mathematica?
@Szabolcs Agreed looking at MATLABs meshgrid documentation it looks like Mathematica has much more comfortable functions that avoid the need for meshgrids. But if one would really needs such a thing Table sounds like a good choice.