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12:24 AM
In the interest of giving advanced notice: I'll need to be away for a few weeks, during which I have no way of accessing the Internet. I hope I can return at a better time for me. Farewell for now, and please don't misbehave too much while I'm away. ;)
3
 
 
2 hours later…
2:40 AM
@Szabolcs Not at all. It's nicer now :)
 
@JM Good luck, we'll see you when you get back.
 
 
3 hours later…
6:06 AM
@rcollyer there should be no race; Heike is great with graphics and image processing.
@Szabolcs why are you doing Q&A in the chat room? Do we need a sock puppet account to post questions you are too embarrassed to post in your own name?
 
 
5 hours later…
10:52 AM
@JM Have a safe trip
@MrWizard Actually you used that syntax here. I thought it would be good to draw attention to it because before I thought this was not possible at all. If you think it's valuable, go ahead and post that question with a corresponding answer now. I'll vote for it. It was useful for me.
 
11:14 AM
@Szabolcs your path clipping question has motivated me to finally tackle the problem of finding the intersection of two polygons in Mathematica.
 
@Heike Did you see this?
 
@Szabolcs Yes I have, but I didn't like the use of RegionPlot
 
Hello Heike, Szabolcs. Szabolcs time to chat yet?
 
Hi Mr.Wizard
 
@Heike There's another solution using the IMTEK Mathematica supplement to do the intersections --- but it only works for convex polygons. If you implement a more general one, I'll post a question for you to answer. Or you you can answer the clipping question too if you like that better (but I think polygon intersections deserve their own question --- and the clipping answer could just link to that)
 
11:20 AM
Heike, speaking of "did you see this" I have not answered this question specifically because I am waiting for your approach, which I expect will be better.
 
We are so vote-happy, some question from this site shows up in the hot questions lists nearly daily.
Mr.Wizard, I understand you'll be annoyed, but please give me one more day ... I am really sorry It must look bad that I do spend time here, but didn't yet sit down to talk inject. Honestly, shouldn't spend much time here these days ... I'll close the browser now an try to focus on work (but never know if another question, like the GraphicsRow one will come up)
 
@Szabolcs My solution seems to work for general polygons, even self intersecting ones (although there seems to be a slight issue for points for which the winding number is >1, but that shouldn't be too hard to solve)
 
Okay, but I think you owe it to me to post a new question when the time comes so that I can share what I've got. :-)
 
Alright, I'll do that! :-)
 
@MrWizard Last time I looked, the only answer there was kguler's first version. I was waiting for some feedback from the OP to see whether that was what he wanted or not.
 
11:28 AM
Rainforest Frog's own answer shows what I assume is what he wants, and uses the only method I could think of to do it. Do you know of a better, or at least cleaner way to do this? I tried to Rotate and Scale entire Graphics3D objects, but that didn't work so well. Doing it element-wise seems prone to problems (though perhaps all I needed was the right way to fix point of rotation).
 
@MrWizard I've posted an answer.
 
That was fast!
 
@MrWizard I cheated. I produced this yesterday but hadn't had time to post it yet.
 
I see. As expected it's very nice, but you left in the terribly redundant grating code. If you don't feel like fixing that, may I?
 
@MrWizard Be my guest. I haven't touched the grating code at all.
 
12:23 PM
Q: How can I verify if a package is available to load or not?
I need a function that'll give me True if package x is loadable and False otherwise.
A: Use FindFile.
 
 
2 hours later…
2:10 PM
@Heike Sorry about not paying attention, it wasn't for your example. I have deleted the comment now.
 
2:23 PM
@Szabolcs I'll delete mine as well then.
 
This function saved me a lot of tweaking time, even if it's a hack
 
@Szabolcs It is a bit hackish, but at least ImagePadding is in points so reading off the padding from the rasterised plot should be fairly robust.
 
2:52 PM
Exactly
 
 
2 hours later…
4:53 PM
What is the recommended thing to do with my answer here
3
Q: How to implement streamline-like objects in 2D/3D?

István ZacharConsider a set of trajectories in 3D space, that possibly converge. By visualizing trajectories as arrows the result will look crowded as each arrowhead will be placed where the attractor is. In 2D, the issue can be resolved by using StreamPlot, which places arrows neatly so that no arrows cross ...

delete it?
i misread the question
 
5:29 PM
@MrWizard HTML doesn't have sarcasm tags.
One, there is no way you could win without a lot of questions being generated. Two, I totally agree, she's awesome at graphics.
 
@EliLansey That might perhaps be prudent...
 
@yoda ok, done.
 
@rcollyer have you seen 500's latest question?
 
@yoda The CellularAutomaton[] question? No, I hadn't seen that one.
 
The questions are tending to be more and more rtfm these days... not sure if the comment's too harsh on him.
 
5:38 PM
Good question. I don't have any feeling on that one way or the other.
Also, where did you find the url shortener?
 
If you click the In[] on any web documentation example, it gives you a direct link
 
Did not know that.
Thanks.
Then, of course, there's this question from a guy I know in real life.
 
Should we make a rtfm tag? :)
 
@rcollyer I didn't vote one way or the other, and I don't mind such questions from new users... the documentation can indeed be daunting, especially if one is not used to such a way of presentation. On the other hand, being a regular, he probably ought to have checked...
either way, I'm not fretting over this, especially not when I'm supposedly on a "grad student's vacation"
 
@yoda what is this "grad student's vacation" you speak of?
 
5:43 PM
@EliLansey just what I wanted to know.
 
didn't know such things existed
 
We get vacations?
 
@EliLansey the one where it's technically a vacation per your advisor and office staff, but you end up working to write up a conference paper for the most part
 
Right, I've heard of those.
 
@yoda ah, ok. been there...
 
5:49 PM
later.
 
adios
 
 
1 hour later…
7:17 PM
This is just for fun. I hope it is okay to post such questions (even when I am not having a practical problem)
0
Q: Arranging connector lines

SzabolcsHeike gave an absolutely wonderful answer to my question about arranging subplots around a main plot and including connector lines. This is the result: Starting from Heike's answer, what is the best order to arrange the subplots in so the connector lines are as easy to follow / as aestheticall...

@yoda What do you think?
 
7:30 PM
@Szabolcs it is a good question, but I would remove the "fun part" editorializing bit
If we have to prove that every question we ask is practically relevant to some problem that we're currently facing, then we'll soon run out of questions because people won't bother asking for fear of being labeled a 'non-serious' asker
We also don't want people to ask blatantly fun questions all the time either...
Your question has a lot more significance than just some reordering of subplots, so is by no means a party question
 
8:08 PM
@Szabolcs It's actually a potentially hard problem. Basically your looking for an arrangement where the lines are short and do not overlap.
So, the intent maybe fun, but if I remember correctly this is similar to your planar graph problem.
 
 
2 hours later…
10:11 PM
@Szabolcs I'm under the gun with lots of work, so my solution to your question isn't quite complete. There needs to be a step that maps the angles of the points to the angles of the miniplots. People should feel free to edit my answer.
 
@Verbeia It's past midnight here and I'm very tired, but I'll look over it tomorrow morning!
 

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