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Apr
9
awarded  Notable Question
Mar
18
comment Complex conjugate
@Solarmew such "pretty text" is input using $\LaTeX$. See a basic help page and an extended tutorial about what MathJax supports.
Feb
22
revised Manipulate slider unresponsive after suspend in Linux
added 398 characters in body
Feb
22
comment Is it possible to embed a notebook as a panel in a java GUI?
The link is broken
Feb
22
revised Manipulate slider unresponsive after suspend in Linux
deleted 34 characters in body
Feb
22
answered Manipulate slider unresponsive after suspend in Linux
Feb
21
comment Normal[Series[ ]] does not give a normal expression
Too bad Evaluated option doesn't exist for e.g. LogPlot or ListPlot, so one is forced to wrap the argument in Evaluate[] call.
Feb
21
comment Graphics3D flickers in Mathematica 10 and Linux
I'm seeing this on nvidia graphics, although there's only one flicker before the rotation starts, and then it works normally.
Feb
9
comment I'd like to display field lines for a point charge in 3 dimensions
Thanks, that looks great. But for some reason it uses a huge amount of RAM and goes into heavy swapping on my machine with 4G of RAM.
Feb
8
comment I'd like to display field lines for a point charge in 3 dimensions
As for the colouring, I think more understandable would be to use GrayLevel[1-#]& instead of Hue.
Feb
8
comment I'd like to display field lines for a point charge in 3 dimensions
Of course, I meant that the thickness would have a maximum like clipping does in your color suggestion.
Feb
8
awarded  Altruist
Feb
8
comment I'd like to display field lines for a point charge in 3 dimensions
BTW, is there any simple way to change thickness of the tube depending on field strength?
Feb
6
awarded  Investor
Jan
28
comment How can I change variable passed to a function?
@Ymareth my usecase was the following: I had several matrices, and wanted to zero nth column and nth row in each, so a function zeroCross[mat_,n_] would just do that. I'd then just do zeroCross[#,n]&/@{m1,m2,...,mk}. If it returned the changed matrix instead of changing the argument, this would change to {m1,m2,...,mk}=zeroCross[#,n]&/@{m1,m2,...,mk}, where mk is of course not a two-letter name.
Jan
28
comment How can I change variable passed to a function?
@Ymareth the function may take multiple arguments to change, and not having to say {a,b,c}=f[a,b,c] is really convenient. After all, even the built-in AppendTo[v,val] is also nothing more than syntactic sugar over v=Append[v,val], but it's so useful. This can be compared to using x+=y instead of x=x+y.
Jan
28
accepted How can I change variable passed to a function?
Jan
28
comment How can I change variable passed to a function?
@Nasser of course, it was how I used to work around this. But Pickett's answer lets me do it more conveniently in some cases.
Jan
28
asked How can I change variable passed to a function?
Jan
1
revised How to prevent instability blow up in NDSolve?
added 378 characters in body