David Carraher

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	7,026 reputation	bio	website		visits	member for	1 year, 4 months
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7h	comment	Why don't these styling rules work when viewed in TableForm? Why not explain why your code works but his does not?
11h	comment	Sharp background image in plot The image, when uploaded to stack exchange, does show some blurring. However, from what I can see, the image output in Mathematica shows no such blurry transitions. Try for yourself and let us know.
1d	comment	How can I create a list of functions? Something like this? `Through[{f, g, h}[x]]`
2d	comment	Variable scoping problem when mapping over delayed replacement @Aky So, don't you post an answer to your own question.
2d	comment	Variable scoping problem when mapping over delayed replacement Nice Question. I have often wondered about collisions between the variables in replacement rules and global variables. My approach has been to be careful about naming. There's got to be another way. Sticking the y in Module doesn't help, as you noted.
May 14	comment	Common subexpression from two expressions Yes. I made us of your observation in the latest version.
May 10	comment	How does `LongestCommonSubsequence` work? You appear to be correct in your hypothesis. (See edit.)
May 6	comment	What does “# & /@” do? Welcome to Mathematica at Stack Exchange. Even before hitting the documentation, you may want to play around a bit. Q1. To understand what `Join@@` does, try comparing the output of `Table[a i + b j, {i, -5, 5}, {j, -5, 5}]` with that of `Join@@Table[a i + b j, {i, -5, 5}, {j, -5, 5}]`. Q2. Then compare the output of `pts` with `Point[\[Tau][A] + # & /@ pts`.
May 1	comment	A SetDelayed issue If your thesis advisors come across this on a web search, they will merely see that you sought help from others to clarify an issue about Mathematica. Isn't that a normal part of writing a thesis?
May 1	comment	ReadList importing negative times Thanks for sending the file. It turns out that `ReadList` parses the input differently from what I had imagined. (see second attempt, above.)
May 1	comment	ReadList importing negative times The output in the first gray box is already transformed by Mathematica. Cutting and pasting it does not provide a list. I could try to guess how the data looked in the file form, but I prefer to review the actual file.
May 1	comment	ReadList importing negative times If you post a link to your data file, others may be able to help with the importing via `ReadList`.
May 1	comment	ReadList importing negative times Would you show the data as imported, before you manipulate it? I suspect that the number -0 is already read in as 0. If you read in "-0" as a string, you should be able to retain the minus sign.
Apr 29	comment	Viewing Mathematica Demonstrations Project Code Would you send a link to a particular demonstration, the code of which you have not been able to view? That way, we may see what you are experiencing. BTW, did you mouseover the places where the cell brackets normally appear. They may simply be hidden from view.
Apr 26	comment	How to get rid of trailing string after using Convert? `Convert` does not appear to be a built-in Mathematica function. Are you using a package where `Convert` is defined?
Apr 23	comment	data visualization on a lattice grid You have only drawn a single arm. To display an angle, one needs two arms and a symbol to show the sweep from one arm to the other.
Apr 19	comment	Find continuous sequences inside a list +1 Very clever!
Apr 19	comment	PaddedForm adds an additional padding character I believe that PaddedForm adds padding to the left/right regardless of what is in the middle
Apr 18	comment	How can I draw a 3D cross-section of a 3-torus embedded in 4D Euclidean space? Very interesting first question.
Apr 16	comment	How can I find if the number of subsets for a list is very large? Do you really need to obtain all of the subsets? Would a partial list suffice? E.g. subsets with at most `n` elements? Or subsets with between `n` and `m` elements? Or a "random" sampling of subsets?