rcollyer

11,551 reputation

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bio	website	mathematica.stackexchange.com
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	age	36
visits	member for	1 year, 4 months
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The gravatar was made with Mathematica, and inspired by this.

The contents of my posts are my own opinion, and do not reflect the opinions of my employer.

	11,551 reputation	bio	website	mathematica.stackexchange.com	visits	member for	1 year, 4 months
22575 badges		location	United States		seen	8 hours ago

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15h	comment	Filtering the elements of an array to split them into two categories @cormullion on some level expecting some familiarity with the syntax is expected. However, we all had to learn it somewhere, and it took me longer than I care to admit to find this tutorial on shorthand notations. Of course, it seems to contain a number of things, so it is a good link, in general.
16h	comment	Filtering the elements of an array to split them into two categories @cormullion Searching for `@` returns a single reference which has to do with output formatting, and it is not immediately clear that `f@x` is equivalent to `f[x]`. Some interpretation is required to achieve that.
20h	comment	Why is there no PositionFunction in Mathematica? I find it funny that I really only started to use `Position` after participating here. I think this site has warped my sensibilities. :D
1d	revised	Problems with RootLocusPlot formatted code
May 18	awarded	Excavator
May 18	comment	Can one identify the design patterns of Mathematica? To augment your discussion of self-blocking code, sometimes you don't need to remove existing definitions, but add to them. So, Internal`InheritedBlock is useful, instead. I recently did this in a recursive descent parser I wrote where I needed to add additional behaviors to the children of some of the tokens.
May 18	revised	Modules that initialize themselves on first call added missing " to fix syntax highlighting
May 17	comment	Why my Mathematica 9.0.1 wont work with some samples of Mathematica in Graph Theory? @Szabolcs already reported.
May 17	comment	Why my Mathematica 9.0.1 wont work with some samples of Mathematica in Graph Theory? I put the `InputForm` of the graph into a code block. Look at the [revisions][mathematica.stackexchange.com/posts/25410/revisions] to see what I did, or better yet, the edit window.
May 17	revised	Why my Mathematica 9.0.1 wont work with some samples of Mathematica in Graph Theory? put in input form of code; spelling, grammar
May 17	comment	Why my Mathematica 9.0.1 wont work with some samples of Mathematica in Graph Theory? A couple of things. First, you are trying to post the full box structure of something, and stackexchange does not interpret that correctly. Since you mention the documentation, can you post a link to it and someone might be able to get something better working. Second, the grave marks ( ` ) are for inline formatting only. To set up a code block, indent by four spaces.
May 17	revised	Importing LTSpice data into mathematica added comments to the code
May 17	revised	Importing LTSpice data into mathematica reformatted code, slightly
May 17	answered	Importing LTSpice data into mathematica
May 16	comment	List of Tribonacci Polynomials with Mathematica? @bills true, but he had `f[4] := x^4 + x`. Of course, he's missing a few terms ...
May 16	comment	Add a sub-matrix of zeros in big matrix @AlejandroGuarnizo are you using the function `BlockDiagonalRiffle` or are you using `BlockDiagonal@Riffle`? Also, try restarting the kernel, and see if that changes anything. If that doesn't work, post two small matrices that it doesn't work with and I'll go from there.
May 16	comment	List of Tribonacci Polynomials with Mathematica? Incidentally, the grave marks ( ` ) only perform inline code formatting. To put into block form, precede each line with four spaces, and don't wrap it in the grave marks. Look at my revisions to see what I mean.
May 16	revised	List of Tribonacci Polynomials with Mathematica? formatted code
May 16	comment	List of Tribonacci Polynomials with Mathematica? You skipped `t[3]`. Also, you should space out you definitions a bit more for readability; putting them on separate lines, generally, works well.
May 16	comment	Add a sub-matrix of zeros in big matrix @AlejandroGuarnizo the key is apparently using the appropriate clustering algorithm. I added `Method -> "Agglomerate"` to `FindClusters` and it seems to work. It will even find off-diagonal blocks. Of course, `BlockDiagonalRiffle` only works correctly with block diagonal matrices, but that is a detail. Try it out, and let me know if it stands up to your testing.