I've upgraded from Mathematica 8 to 9 (which apparently leaves the old version installed and usable which I didn't expect). I see a significant difference in the size of the PDFs produced by 'Save Graphic As', or Export[].
For example, with this very simple plot:
Plot[
Abs[Sinc[x]], {x, 0, 4 ...
strange, I sent some pdfs to a colleague today and they could not see the text (standard fonts for mma plots). I had assumed that there was some problem with the fonts not being embedded and his workstation not having it.
@MikeHoneychurch Yes, I think the BIGGEST problem was the slowness. Remember how we always used to CC each other just to get the messages faster? My second biggest complaint was the lack of threading. Newreaders and email clients can thread messages, but when there's a hybrid of a newsgroup and a mailing list it's impossible to do it properly. Sometimes I missed messages just because of that.
@acl When you use that shared machine next time, could you please check the default order of ChoiceButtons[] on Linux? Is it [OK] [Cancel] or [Cancel] [OK]? It might actually be desktop dependent (KDE vs Gnome)
@all Can you please try to update the image uploader palette when you get the time? Please just use the Update... button, and tell me if something is broken.
I'm trying to use the new WhenEvent functionality of NDSolve in Mathematica 9, in order to perform an action when a variable in the system reaches a certain value. I would like this variable to come from an external variable, like so:
var = y; (* this could come from somewhere else *)
list = {};...
I don't even know how to create a test for this... If you were to define a f[x_] with HoldAll, how would you even check whether stuff is being evaluated or not?
If I define a function called test to have the Attribute HoldAll, then test[Evaluate[var][x]] doesn't change but test[Evaluate[var[x]]] does, that is, when var=y.
@jtbandes Just try it!
I'm going to edit my answer to reflect this conversation in a bit and I'll be able to be more clear there.
@rm-rf So, you must be in your mid-twenties?
You should see some of my Mathematica code from when I was in my mid-twenties!
Why should Evaluate[var][x] be any different from Evaluate[var[x]]? They both have var in them... And if anything, I would expect the former to be replaced but not the latter.
Also, it's used in quite a special context - namely replacing structures deep inside a held expression. I just know that, when I'm going to do that, I know where to look!
@rm-rf This question put my rep at exactly 10000 - what should I do?
temp will be a far more complex function..its not going to split like this..I need to be able to generalize the updat on f_i and temp as in the last line of the loop, Subscript[f, i][y_, z1_, z2_, n_] = temp[y^n, z1^n, z2^n] .. how will this line generalize?
so you are saying that temp and f_i both need to be defined as temp[y_,zs__] and f_i [y_, zs__,n_] ?
in LnMT1 it will become \!\( \*UnderoverscriptBox[\(\[Sum]\), \(j = 1\), \(Nf\)]\(z[j]^n\)\)
So I now have this "zs__" thing only at 2 places, the first line of loop where temp is getting defined and in the last line of the loop where f_i is getting updated
@user6818. To handle an arbitrary number of parameters {z1, ..., zn}, you should consider that in Mathematic Power is Listable and Plus accepts an arbitrary number of arguments. Consider:
z = {z1, z2, z3, z4}; Plus @@ (z^n)
This outputs
z1^n + z2^n + z3^n + z4^n
This behavior can be used to write your code for an arbitrary number of z-parameters.
This is my implementation (with contributions from @halirutan and help from a number of people) of an image uploader palette, which I would like to share with the community to make it more convenient to use this site.
Download the latest version here!
First time installation:
Download the p...
@Szabolcs Btw, I reported today the JLink not starting Java behavior. It was definitely working in V8 and the documentation hasn't change. Although, the doc says explicitly that you have to start it with InstallJava
This is most likely a duplicate, even if it's about exporting notebooks and not exporting graphics.
@halirutan It was a problem because I didn't know where to host the initial download. I put it in my dropbox for now.
@halirutan In version 8 JLink is loaded and Java is started when the kernel "boots" up. In v9, JLink doesn't seem to be loaded (it's not in $Packages). The symbols do seem to exist (e.g. JLink`InstallJava is there), but they don't have definitions associated with them.
I'm not sure it's a bug, but I'm curious what they'll say
not sure my test was correct, but loading JLink doesn't seem to do InstallJava in 7 either. At least when trying from the command line. (Had to ssh to a uni maching)
It's a more striking demonstration to simply enter Quantity[Print@"hi"; 10, "Meters"] and press Control-Shift-N (in case you need to show that this is a significant problem)
@Szabolcs Yes, I reported it and told them exactly that. In fact, that's how I came into it. You do x=10; Quantity[x, "Meters"], select the quantity, convert to STandardForm, and x disappears. In my real problem, it wasn't x but an AstronomicalData that turned into an ugly number
@NasserM.Abbasi I don't think we users can do anything about it, so not really worth asking it as a question. But I'd definitely send some feedback about it to WRI
why do I have the Talkative badge? Do I really talk too much?? I did not think I talk too much. or do I? being awarded a Talkative badge implies I talk too much, when in fact I do not think I talk that much at all. So I was surprised to see that I "earned" this badge.
@Rojo @Nasser can you take a look at my comment-answer? I have to get some work done now, but I'm sure you can discover some more things if you dig a little deeper into how RemapValue and RemapVariable work
@Szabolcs, thanks, +1, that looks like a good analysis and good guess. I do not get into Mathematica internals myself that much, too complicated for me under the cover. But I think you might have hit on it there. May be someone like John Fultz from WRI can spot this question and make better comments on your analysis that I could.
I've upgraded from Mathematica 8 to 9 (which apparently leaves the old version installed and usable which I didn't expect). I see a significant difference in the size of the PDFs produced by 'Save Graphic As', or Export[].
For example, with this very simple plot:
Plot[
Abs[Sinc[x]], {x, 0, 4 ...
This is my implementation (with contributions from @halirutan and help from a number of people) of an image uploader palette, which I would like to share with the community to make it more convenient to use this site.
Download the latest version here!
First time installation:
Download the p...
