Recently I have been posting an answer that is not yet complete and then continuing to make additions over the next few minutes. Undeniably I enjoy getting first post, but there is another reason that I have been doing this: to get some ink on the page so that others know what is coming.
I pers...
This is related to Simon's question on changing default ColorData in Mathematica. While the solutions all addressed the issue of changing ColorData in line plots, I didn't quite find the discussion helpful in changing the ColorFunction/ColorData in ContourPlot/ArrayPlot/Plot3D, etc.
TLDR: I...
@Szabolcs Yeah, if you'll note the structure of a package, you have BeginPackage[], usage messages, Begin[] (private context, natch), definitions, and then End[] and EndPackage[]...
I am trying to have two panels, the left showing a graphic and two locators, the right one a zoomed-in version in the area defined by the locators.
I've tried
ClearAll[mndpt];
mndpt = Compile[{{c, _Complex}, {maxiter, _Integer}},
Module[{z, iters},
iters = 0.;
z = c;
...
@JM I understand they put a cap on the amount of rep you can get, but maybe the limit should be a function of the number of answered/asked questions as well.
I propose a new Gold level Sportsmanship badge. I earned the silver badge June 4th, and I continue to vote for competing answers. I would like to feel that I am working toward something, not because I would otherwise cease to vote for these answers, which clearly I have not, but because it adds...
That is do you need 100 of your own answers or not? I have assumed that it only counts one for each of your own answers. Otherwise this would be fairly easy to game by posting to one question with 100 answers and voting for all of them.
@yoda While I admit to my addiction, I do like the pace at which I answer things. Unfortunately, that means I have to wait for some of the cooler badges.
@rcollyer yeah, same here. Sometimes, it's a bit disappointing that ones I could've answered easily are already answered and the ones I can answer, but need time are answered by someone more skilled... but I'm not going all out (not that I'd achieve much if I did...)
@yoda Exactly. I try to nab the ones I can answer reasonably, and if someone beats me to it. Oh well. At that point, I'll answer only if I can add something.
@yoda it's the gift that keeps on giving. I post so rarely on meta, this is funny.
@yoda let me see if I understand this. Post an answer to this question, get at least one vote on it, then upvote all the other answers and POP, sportsmanship badge. That doesn't seem broken to you? Or do I misunderstand?
I've quite forgotten: what file does one modify in order to add directories to $Path globally? Specifically, I want to include $UserBaseDirectory/ExtraPackges.
Or does one do it by means of modifying some setting in the OptionInspector (for Global Preferences) and, if so, which setting? I didn't...
@acl I think that should work. I haven't looked at it but I would have thought that there is some option in the Options Inspector that sets the search path.
@Heike I was trying to work out if he really is asking this. I generally prefer adding stuff to init.m rather than options (since then I can just look at init.m and see what's happening)
@Heike yes I have posted an answer along those lines. if you can work out how to do it in the option inspector go ahead and add that (I get confused going in there)
Lately simple questions get no or very few upvotes. I think this is a good (though basic) question: mathematica.stackexchange.com/questions/1874/… It is not that easy to figure this out on one's own.
@Szabolcs I think that parallel addition of matrix question is a person coming from MATLAB where it's faster to first initialize the table, then fill it.
Is there any reason you can't directly construct the Table, as in:
DistributeDefinitions[a,b]
c1 = ParallelTable[b[[i, j]] + a[[i, j]], {j, 1, n}, {i, 1, n}]
On my machine, with n=500;, Table[b[[i, j]] + a[[i, j]], {j, 1, n}, {i, 1, n}];// AbsoluteTiming takes 0.59 s, while ParallelTable takes...
@yoda I was actually hitting the leave button. So, if you kicked me off, or I kicked myself off is up to the logs ... :P But, thanks. I'll need it today.
@EliLansey Use Method -> "CoarsestGrained" and launch 16 kernels if you have hyperthreading and enough kernel licenses :-) I wonder how much it'll cut from the time
It seems like I'm the only impolite ass who just leaves the computer (while logged in) and goes to bed without notifying others that I won't be back to reply for the night...
The next question would be: why not highlight everything as text after something like function::message: (i.e. trailing colon). That would be nice, but what if the message text is multi-line?
@Szabolcs Hmm... good point. I guess it's alright.. This is the first time I've come across the script not highlighting (you've probably found them all before I had a chance to see :D), but I don't think it's worth halirutan's time to fix this small issue
It's in a really messy state now, with all the conflicts with the builtin Graph. But I find the builtin Graph functionality messy, incomplete, and it has silent bugs which make you end up with wrong results
I am really really really hoping for a significant improvement in 9
Yeah, I'm just trying to pick up some package writing hints as I read along (and someone mentioned that a lot of packages are full of goodies)... a lot of my code is just in monolith notebooks as i hack and patch together stuff to get work done and I need to fix that
The tracking stats are now live on Area51. We're mostly green (good) with two orange (okay). So, as far as these stats are worth anything, we're doing good!
@yoda Unfortunately, people copy such messages too slopy as Mathematica-input ;-)
Since it is no valid syntax, the pattern-matcher assumes it is a M-pattern. Even in Mathematica this is not highlighted correctly.
I was thinking about this problem earlier, but since those messages can go over several lines and contain really everything, from keyword to numbers and since they are not in quotes like strings, I see no easy way to match this.
When I include messages in a post, I surround them by comment-braces.
@Verbeia The leveling off of traffic is a good thing. It means we are firmly within the period they use for the moving average, and an uptick in that value will mean we are showing signs of heading towards graduation.
Okay some irritation here. I have a function f[x] that I can evaluate to two decimal places via N[f[2],2]. Great. Now if i do either of the following N[f[2]*<float>,2] or N[N[f[2],2]*<float>,2] Mathematica ignores my instructions of N[ ,2]. What am I doing wrong?
Well here's a potential issue, my <float> is stored in a variable that I'm calling.
so would it be N[f[2]*var10, 2]`?
@Halirutan, Myself and my colleague have been beating our heads over such a simple issue for the past 20 minutes. The program is not doing what the documentation is seemingly implying though we're obviously missing something.
@Szabolcs @Szabolcs for Mathematica (not counting things like Dot, LinearSolve, etc., at machine precision that are treated using MKL), hyperthreading cores should be nearly as good as real cores. (Admittedly I don't have a computer with hyperthreading here to check that. But, I feel it is likely to be the case since Mathematica code generally achieves low IPC due to low arithmetic intensity, large working set, and complex memory access patterns.)
On the other hand I also thought that everything there was to say about the compiler had already been said lately, and Leonid proved me wrong by posting a nice overview. So maybe someone else will chip in.
Recently I have been posting an answer that is not yet complete and then continuing to make additions over the next few minutes. Undeniably I enjoy getting first post, but there is another reason that I have been doing this: to get some ink on the page so that others know what is coming.
I pers...
This is related to Simon's question on changing default ColorData in Mathematica. While the solutions all addressed the issue of changing ColorData in line plots, I didn't quite find the discussion helpful in changing the ColorFunction/ColorData in ContourPlot/ArrayPlot/Plot3D, etc.
TLDR: I...
I am trying to have two panels, the left showing a graphic and two locators, the right one a zoomed-in version in the area defined by the locators.
I've tried
ClearAll[mndpt];
mndpt = Compile[{{c, _Complex}, {maxiter, _Integer}},
Module[{z, iters},
iters = 0.;
z = c;
...
Our dearest SO "ToolBag" question has been closed.
Should we migrate it here for re-openning and caressing?
Is there any reason you can't directly construct the Table, as in:
DistributeDefinitions[a,b]
c1 = ParallelTable[b[[i, j]] + a[[i, j]], {j, 1, n}, {i, 1, n}]
On my machine, with n=500;, Table[b[[i, j]] + a[[i, j]], {j, 1, n}, {i, 1, n}];// AbsoluteTiming takes 0.59 s, while ParallelTable takes...
