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As time goes on, I grow more disillusioned with quantum field theory.


7h
comment Visualizing vector-spherical waves
HI Jens, it doesn't seem to work. I am getting an error. First, I am using Sequence @@ CoordinateTransform["Cartesian" -> "Spherical", {x, y, z}] because I am using version 9. Then I am taking the fieldLinePlot out of the Table because I just want one frame. When I run it, I get a bunch of errors, the first one being NDSolve[...] nether a list of replacement rules nor a valid dispatch table followed by part specification errors. The code runs fine in the two examples that you linked to (pair of charges, and current). Any ideas?
May
14
comment Getting MemoryAllocationFailure from NIntegrate
My experience with this site tells me that people will ask you to show them what integral you're trying to do, and what output (if any) you get before crashing.. in both versions.
May
12
comment Visualizing vector spherical harmonics
This is fantastic. In v9, there is the built-in function CoordinateTransform that supersedes CoordinatesToCartesian and (I believe) the VectorAnalysis package as a whole. Soon, I will be multiplying with the BesselJ function, just as you predicted, and will need your help when I do!
Mar
21
comment Define a Plot3D function with custom options
That fixed the problem! Thanks
Mar
15
comment Saving a notebook as PDF, preserving syntax highlighting
@Mr.Wizard No, I never got it to work. But, I am still eager to get it to work. I have v 9.0.1
Mar
8
comment Version 8.0 integrates but Version 9.0.1 doesn't
Thanks for reproducing; I have removed the bugs tag.
Mar
8
comment Version 8.0 integrates but Version 9.0.1 doesn't
$m\pi$ represents a single symbol.
Mar
8
comment Unique[] in RHS of rule
How did you know that this was the way to solve the problem? Even with answers to my other questions on SE, I still don't seem to get it... it just seems like magic half the time, and I just move on...
Mar
3
comment How to write a differential operator in Mathematica
@Jens Thank you for these reference! They are very helpful!
Mar
3
comment How to write a differential operator in Mathematica
Lol! I am not pulling your leg. My 1000 reputation is coming from asking 1000 idiotic questions. Check my profile. But your response is very helpful!
Mar
2
comment How to write a differential operator in Mathematica
@Ajasja Hey! it looks like this is on the right track. I added an & at the end, and all the #1's turned Green. What next?
Feb
19
comment Multiple templates for a single user-defined function
Ha! My error. It should have been more consistent!
Feb
19
comment Multiple templates for a single user-defined function
Thanks! But, I am now trying to add a third template, and adding yet another line seems not to work. Does having three templates work for you?
Feb
6
comment How can I remove matching sublists from my list?
Actually, I am completely unable to understand how your one-liner works. I would like to learn how to pry it apart so that I can adapt it to larger code. How can we talk on the side about this? What's really confusing me is what #2 is referring to. Is it the second argument of myData?
Feb
6
comment How can I remove matching sublists from my list?
This works marvelously well. I've used Mathematica for six years, and I have never seen # /@ & #2, so I don't even know how your code works... :(
Feb
1
comment Saving a notebook as PDF, preserving syntax highlighting
This is not working for me. I tried (1) to run the code in the notebook I wanted to preserve syntax highlighting. (2) Go to Format->Edit Stylesheet..., and tried to run the code under the Default.nb (3) same as before but under Local definition of 'All'. None of these attempts worked. How do I make this work?
Jan
30
comment How to influence Suggestion Bar in your package/code
This is unfortunate.. the suggestion bar is stupid and annoying, and it can't be customized. Biggest waste of resource. Also, thanks.
Jan
27
comment Feedback on my Subscript code
@Jens Ah! Very good point about dot products. I suppose that this is restricted to sums of vectors, and products of numbers and vectors. But not square of vectors. Thank you for feedback.
Jan
25
comment Hiding certain user-defined functions in front-end autocompletion
As I said in my comment to you under the original question, I really didn't mean to put on a negative tone. I was trying to get at the motivation of how your answer works. So sorry!
Jan
25
comment Hiding certain user-defined functions in front-end autocompletion
@NickStranniy Sorry about the deriding comment to your solution. Your follow-up comment about Mathematica's internal functions being accessible to users was something new to me, which I learned. Next time, I will be more mindful of what I write.