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Feb
26
comment Confirming the existence of a function related to a matrix
Wait... you changed your question. I thought the $m_{ij}$ were entries in your matrix. Is that not the case? What relation does $M$ have with $f$?
Feb
26
answered Confirming the existence of a function related to a matrix
Feb
26
revised Confirming the existence of a function related to a matrix
edited tags
Feb
26
comment Why doesn't Compile work on Permutations function with second args?
Related: The two "Edit" sections here mathematica.stackexchange.com/a/1101/5
Feb
26
comment How can I draw this plot?
Hello there! I just wanted to point out that you can easily edit your previous answer by clicking the edit link and add this (and other updates) to it instead of serially posting answers :)
Feb
26
comment Symbolic derivative of $n$-term product
Congrats on your 10k! Your answers are always a treat :)
Feb
25
comment How can I make a transparent 3D Rectangle?
No, I chose Lena as the topping
Feb
25
comment How can I make a transparent 3D Rectangle?
"Thank you for this answer, but it doesn't answer my question because in my application I want the bottom to be transparent, top to have the full lena picture and the sides to start from transparent at the bottom and end opaque at the top with toad watermarks in the center." Waaaaah :'(
Feb
25
comment NIntegrate, view integration options
Duplicate: mathematica.stackexchange.com/q/145/5
Feb
25
comment Color plot markers using If statement
@RainforestFrog But that is not what you said in the question...
Feb
24
comment Loop through a list and select elements
Possible duplicate: mathematica.stackexchange.com/q/7924/5
Feb
24
comment Loop through a list and select elements
"the mathematica documentation is pretty hard to understand." — Which part of the documentation for For did you try to use for your problem and where did you get stuck?
Feb
24
revised Beginner: Saving & Reloading but Preserving Input/Output
appended answer 20114 as supplemental
Feb
24
comment Why does the syntax highlighter color a local symbol red inside DynamicModule?
@Nasser You seem to be expecting a lot from the syntax highlighter... I can understand your gripe if the kernel leaked the variables between the scopes, but it doesn't. The FE uses what best knowledge it has of mma's syntax, the current scope, the variables defined (previously and now) and does a pretty good job. It is more likely that someone new might do this unknowingly and be confused that the x inside is not what they defined first, so mma gives a warning. Note that it is only a warning, not an actual error, so I don't see what the problem is. As Rojo said, disable it if you don't like it
Feb
24
comment Why does the syntax highlighter color a local symbol red inside DynamicModule?
Your example is needlessly complicated and makes it harder to convey the point... here's a simple one: DynamicModule[{x = 1}, Module[{x}, x = 2] ];
Feb
24
comment Why does the syntax highlighter color a local symbol red inside DynamicModule?
@Nasser There are several examples of the highlighter showing something as red when it's not really an error. I'm also not surprised that it can't know well in advance that this won't lead to an error, so better safe than sorry. The only true answer to your question is to treat it as a warning and proceed if you know what you're doing.
Feb
23
comment how to interactively select points inside certain region in a plot
Please see the duplicate question above. The answers there solve this exact problem. As a side note, you could also use Graphics`Mesh`InPolygonQ (with the same syntax). I mentioned this in a comment under my answer
Feb
23
comment Print out all functions in Mathematica
You can also do this without the HelpLookup function. Simply replace Column@makeSearchable@# with Column[Hyperlink[#, "paclet:ref/" <> #] & /@ #]. I like this because clicking a different links does not launch a new doc window (default doc center behaviour) and you can always open a new window with rt.click
Feb
23
comment Define a second name for a function
You're welcome :)
Feb
23
comment Define a second name for a function
Luckily, this very same question was asked just a couple of days ago and has a very nice answer that would be perfect for your case :) Let me know if it isn't (and why) and we can reopen this one with the specific problem.