Wolfram Mathematica

transformTick[t : {_, "", _List, _List}] := t;
transformTick[{pos_, label_, length_List, spec_List}] :=

 With[{hash = Hash[MakeBoxes[label]]},
  Sow["\\psfrag{" <> ToString@hash <> "}{$" <>
    ToString[TeXForm[ToString[label, TraditionalForm]]] <> "$}"];
  {pos, hash, length, spec}
  ]

{gr, labels} =
  Reap[Show[#,
      FrameTicks ->
       Map[transformTick,
        FrameTicks /. AbsoluteOptions[#, FrameTicks], {2}]] &@
    Plot[Null, {x, 0, 10^6}, Frame -> True, PlotLabel -> 10]];

Then you have in gr the graphics with encoded labels and in

  Column[Flatten[labels]]

your psfrag definitions

Gives something like this

    \psfrag{26804890}{$0.$}
    \psfrag{1990022181}{$200000.$}
    \psfrag{1432134731}{$400000.$}
    \psfrag{304126161}{$600000.$}
    \psfrag{437234951}{$800000.$}
    \psfrag{1408748424}{$1.\times 10^6$}
    \psfrag{26804890}{$0.$}
    \psfrag{1944367793}{$0.2$}
    \psfrag{1944369071}{$0.4$}
    \psfrag{2026725883}{$0.6$}
    \psfrag{1944369987}{$0.8$}
    \psfrag{26761225}{$1.$}

einbandi

That looks quite promising

halirutan

This ensures, that you don't replace a common label like (a) or so since the hash-function gives quite unique labels.

The question is whether the length of the labels will become problematic.

einbandi

yeah, that's a lot more elegent than the solution I just posted

though I just noticed that each tag again consists of three or four individual text elements placed in the eps

so that might need some more work

halirutan

12:15 AM

Let me check this on my macbook

einbandi

at least that's what I got by exporting the graphic and importing it again

halirutan

Can you check the following? :

ExportString["1990022181", "EPS"]

here on my osx this ends in one single word.

(are you familiar with postscript?)

You see at the end of the output something like

einbandi

not really

halirutan

(1990022181) N

this means the label sticks together.

einbandi

the way I've checked it previously was by taking a look at FullForm[Import["foo.eps"]]

okay it says (1990022181) N

halirutan

12:19 AM

then the label is ok

Check the doc of psfrac here

einbandi

I was just wondering, cause re-importing the EPS file gives several individual Textcommands:

`Text["804", List[49.267, 2.16], List[Left, Baseline]],
Text["890", List[64.287, 2.16], List[Left, Baseline]]]`

halirutan

You should not care about what Mathematica does during the import. If you what see, what I see here on my Linux when I import an eps, you would probably run away.

Import is, that the labels stick together. Check page 10 on the above link.

There it is stated:

> The tag supplied to the \psfrag command must be typed exactly as it appears in the
EPS le's *show command, without the surrounding parentheses.

einbandi

okay that makes sense

thanks again. I'll look into all this in more detail tomorrow. Then I'll also try out compiling some latex test documents.

halirutan

Yep. I wish you luck ;-)

einbandi

bye :)

halirutan

12:27 AM

@einbandi bye.

halirutan

2:05 AM

@einbandi I have put a better working at the end of my anser

2

A: Automatizing PSfrag export

Let me try to give you some hints. Problem 1. When you look at a specific tick in a Graphics it usually looks similar to the following {200., 200., {0.00625, 0.}, {GrayLevel[0.], AbsoluteThickness[0.25]}} it means, at position 200 draw the number 200. The next list is the specification of t...

@einbandi It now calculates the tick-lengths and creates labels of appropriate width. Can you try this on your machine with a sample.tex how this works?

@rm-rf Did something important happen. Something one should be aware of?

rm -rf

@halirutan What?

I don't follow...

halirutan

@rm-rf No, there was nothing to follow. I just thought I ask whether something important happened.

rm -rf

Not that I know of... I've been mostly floating the past few days. Just handling flags and checking messages; haven't answered in a while

halirutan

There were not may interesting questions either.

But I like the PSFrag one.

This means my wife is playing BattleField for already for an hour without me since I was answering ;-)

Therefore, I better join now before she looses the war.

rm -rf

2:21 AM

:)

Leonid Shifrin

6:06 AM

@halirutan There has been an ExtractArchive kernel function since M8.0. I wish I did search better, that would have saved me some time. At least, I should now be able to drop the Java dependence for the installer.

Mechanical snail

7:54 AM

Style[Nest[u \[Function] Subsuperscript[u, u, u], "\[FilledSquare]", 6], ScriptSizeMultipliers -> 1]

Or,

Style[Nest[u \[Function] Subsuperscript[u, u, u], "\[LeftTriangle]", 6], ScriptSizeMultipliers -> 1]

halirutan

10:02 AM

@LeonidShifrin Oh man.. How did I missed that? I remember that I was fiddling around with Import a long time.

@LeonidShifrin But now that I think about it.. my Updater exists since version 7.

Leonid Shifrin

10:40 AM

@halirutan The worst irony is that I already encountered that function a few months ago and made a mental note to remember it. But ok, it was refreshing and fun to use Java,I also found out some interesting details about archive format peculiarities.

halirutan

Yes, I like it too when I can use Java from time to time.. btw my IDE tells me that in all those lines

`throws FileNotFoundException, IOException, ArchiveException {`

you don't need to name the `FileNotFoundException` since it's a specific case of `IOException` which is already thrown.

Furthermore, you have some typos in the usage messages:

archve

reposotory

Leonid Shifrin

@halirutan Yes you are right, I think I was auto-generating them in the wrong order.

halirutan

ettempts

Leonid Shifrin

@halirutan Thanks, will correct that.

halirutan

And I was a bit confused that you had to add your jar-path manually.

Doesn't JLink scan the "Java" directory of all packages in the search path? I remember something like that.

Leonid Shifrin

10:46 AM

@halirutan You might be right about that as well. I will check that (although, for this particular project, looks like I can drop Java entirely)

halirutan

Yes, I see.

Nasser M. Abbasi

12:17 PM

simple question, When I type Names["DSolve`*"] I get list of names in this context. So does this mean that DSolve a package and a command at same time?

I thought only packages have context? When I type Names["Plot`*"] it is empty for example. I am confused why some commands are package also?

halirutan

@NasserM.Abbasi Yes

Check Contexts["ND*"]

Nasser M. Abbasi

12:34 PM

I see. So these are package that are automatically loaded when Kernel starts. But I am still little confused. one types DSolve[eq] and not DSolve`DSolve[eq]. Actually there is no DSolve`DSolve[]. So when one types DSolve[], what is one referencing?

I mean one does not "call" a package, but a function inside a package?

halirutan

2:20 PM

Sorry @Nasser I had to do something. Assume the following

BeginPackage["Test`"];
Test[] := True;
EndPackage[];

??Test
Test`Test
Test[]:=True

Completely valid. A context is not called but you can call a function from a context directly if the context itself is in the list of searched Contexts[]

Furthermore, and maybe a bit more confusing is

BeginPackage["Test2`"];
Blub[] := True;
EndPackage[];
Test2[] := True;

You can have a global function which has the same name as a context but is not defined anywhere near the context..

@NasserM.Abbasi Does this at least clear things up a bit?

Nasser M. Abbasi

Ok, thanks. I got from the above that package with name Test can have in it a function called Test. So, assuming now that DSolve is our Test. But when I type Names["DSolve`*"] // TableForm I do not see a function called DSolve inside the DSolve` context. i.e. I do not see DSolve function inside the package DSolve.

Can one actually see this package DSolve? I searched my C:\ drive, under Mathematica installation and do not see it. I assume then it is build into the system.

halirutan

Because:

Context[NDSolve] gives System`

So it seems the function NDSolve you are calling is dumped in the system-context while everything under the NDSolve-context seem to be helper functions.

Nasser M. Abbasi

Ok. So DSolve is a function. A global function if you well. Inside the System context. However there also exist DSolve` Context, that contains functions that are used by this global function called DSolve. Did I get this right?

halirutan

Yes. Only "Global function" is a bit misleading.

Because it's still a function sitting in a context (here System) which is in the list of all Contexts[].

Especially it is not in Names["Global`*"]

Nasser M. Abbasi

You are right, I should have said in System context, not global context.

So, the bottom line then is this: There is a package called DSolve, however this package does NOT include the function DSolve. But it includes functions used by DSolve. DSolve function itself sits in different package, called the System package. IS this about right? I am using the name package and context to mean the same thing

halirutan

2:36 PM

Yes, I think that is how the situation is. But @OleksandrR. (always arriving at the right time) can maybe clear this further.

Oleksandr R.

@NasserM.Abbasi I would consider it misleading to do so. Packages do not have to use any particular context, nor do symbols have to be defined in the same context as in the package.

@halirutan I often look at the chat without logging in. :)

halirutan

@OleksandrR. Clever, letting me struggle to jump in at the very last minute ;-)

Do we have any hint, how Wolfram does it for their functions? Are they having different packages or do they just set the context? I mean, it's all build in the kernel anyway.

Oleksandr R.

@NasserM.Abbasi if I were you I would just think of contexts as namespaces (that in Mathematica are not actually insulated from one another) and packages as collections of files containing symbol definitions.

@halirutan they write the packages "somehow" and then save a .mx file. So you can't tell how they initially set things up; the definitions just appear as if by magic in your session. But it stands to reason they use ordinary packages.

rm -rf

@halirutan @OleksandrR. If you use more than one sub-context in a package (e.g. `` Private `` and ```foo` ), is there some way to call the symbols defined in foo `` in private without using the long form?

halirutan

You could add it to the context-paths.

Oleksandr R.

2:44 PM

@rm-rf you can add it to your $ContextPath if you want. After all, Begin just resets the path.

halirutan

@rm-rf The important thing to note is the doc of EndPackage:

restores $Context and $ContextPath to their values before the preceding BeginPackage, and prepends the current context to the list $ContextPath.

rm -rf

BeginPackage["Test`"]
Begin["`foo`"]
...
End[]

Begin["`Private`"]
AppendTo[$ContextPath, "Test`foo`"]
...

something like that?

Oleksandr R.

Looks okay to me.

rm -rf

Ok, thanks :)

halirutan

No, that should not work

Nasser M. Abbasi

2:47 PM

One can see some code inside these packages! I tried ?"DSolve`DSolveKovacicDump`TryCase3" and listing of some test function. Hard to read though

Oleksandr R.

Hmm, yes, I just realised... the symbols will become divorced from their contexts after EndPackage is encountered...

halirutan

@rm-rf You have to do it like that

BeginPackage["Test`"];
Begin["`foo`"]
Test[] := True;
End[];
EndPackage[];
AppendTo[$ContextPath, "Test`foo`"]

Important is, that EndPackage clears whatever changes you did to $ContextPath

After the above code, you can call Test[] without any context spec.

rm -rf

@halirutan No, that's not what I was asking... I wanted to have two subcontexts in the same parent context and wanted to call functions from one subcontext in another without using the full path

halirutan

Ahh..

sorry

rm -rf

BeginPackage["Test`"];
Begin["`foo`"];
Foo[] := True;
End[];

Begin["`Private`"];
AppendTo[$ContextPath, "Test`foo`"];
Bar[] := Not@Foo[];
End[];
EndPackage[];

halirutan

2:52 PM

Yes, then this should work as expected.

rm -rf

Yup.

Oleksandr R.

@halirutan unless you use definitions in such a way that their contexts are not added at parse time. For example with ToExpression.

But, that's a problem for all package code, not just this situation of different contexts.

halirutan

@OleksandrR. Yep

Ajasja

3:12 PM

@OleksandrR. Hi! Do you have a minute? I'm having a really hard time launching remote kernels...

rcmd \\EPR-SPIK "C:\Program Files\Wolfram Research\Mathematica\8.0\math.exe"

Works fine

But

LaunchKernels[
 RemoteMachine["EPR-SPIK",
  "rcmd \\\\`1`  \"C:\\Program Files\\Wolfram Research\\Mathematica\\8.0\\math.exe\" -noinit -subkernel -mathlink -linkmode Connect `4` -linkname `2`", 1]]

Times out (after 15 s)

Any tips on where to start debugging? (I already turned off all possible firewalls...)

Oleksandr R.

@Ajasja hi. A bit odd. Let me look.

Ajasja

(I did also call Needs["SubKernels`RemoteKernels`"])

Oleksandr R.

@Ajasja sorry, I don't quite know what's up. No time to investigate, I'm afraid, as I have to hand in a thesis on Friday...

Ajasja

@OleksandrR. No problem. Good luck with your thesis!

Oleksandr R.

What happens if you use the full $RemoteCommand that I gave, including runas etc.?

Ajasja

3:28 PM

The same. (Actually I haven't tried with $RemoteCommand as I have 3 different computers that have mma installed in diffrent directories. and I wanted to use a separate launch command for each of them. I'll try now.)

Ajasja

3:38 PM

I'll try installing SSH. Bye for now:)

Oleksandr R.

@Ajasja okay, good luck!

If rcmd itself works I don't know why this doesn't.

halirutan

4:01 PM

@rm-rf Can you undelete this answer? I think it's ok and it was written by a new user.

Too late. He wrote a new one. He may thought something went wrong because I edited his first answer.

user1849537

Hi! Any guesses on Mathematica 9 release date?

halirutan

@user1849537 No, but you can place a bet if you like.

Oleksandr R.

4:17 PM

I saw on someone's blog recently that they had inquired in mid-October when the release would be and were told it would be "a couple of months". Make of that what you will.

user1849537

Are you serious? lol

Rojo

Also, the Futz commented here a whlie ago that he had to go work, unless we didn't want MMA9 to come out this year

Oleksandr R.

I think whether one gets an accurate answer or not depends on (a) whether the salesperson actually knows how close the release is and (b) how you ask. I was told the M6 release date accurately ahead of time. For this release I get the impression they are still working issues out and would have released already otherwise.

user1849537

A guy from Mathematica who visited our university two weeks ago told it would be released in a couple of weeks.

halirutan

@Rojo Yes, and the distributor for Germany said they expect it this year.

Furthermore, no one who knows the release date is allowed to tell it, unless, yes unless you are a real hot girl.

Oleksandr R.

4:22 PM

Several people here are in the beta program. But of course they aren't allowed to say so.

Ajasja

@OleksandrR. ssh has the same problem... On the remote computer math.exe is launched and process explorer shows one TCP connection back to my computer. But everything just sort of freezes than with no useful debug messages.

Rojo

Does anyone know if there's any real hot girl in the world interested in MMA9 release date?

4

Oleksandr R.

@Ajasja don't understand it, then. If it's not being firewalled out then I can't see what the issue might be.

user1849537

This one.. www2.pictures.zimbio.com/gi/…

halirutan

@Ajasja But you have seen this answer of mine?

Eli Lansey

4:28 PM

anyone know of an equivilent expression to `ToExpression' in python?

Oleksandr R.

@EliLansey eval?

docs.python.org/2/library/functions.html#eval

Eli Lansey

@OleksandrR. thanks! i'll give that a shot

stinkin' legacy code

hard-coding variables

Oleksandr R.

BTW, long time no see. Gratz on your PhD and postdoc position!

Eli Lansey

@OleksandrR. Thanks!

Been so busy

havn't had time for SE :-(

Oleksandr R.

I'm submitting this Friday!

Eli Lansey

4:31 PM

trying to convert my coworkers to MMA, though

woo!!!

@OleksandrR. good luck!

Oleksandr R.

@EliLansey thanks. :)

Eli Lansey

should that eval thing work on the LHS of something

like, eval('foo') = bar

Ajasja

@OleksandrR. YES! Finally got it!

Had to add >& /dev/null & to the end.

Eli Lansey

nope, it doesn't

Oleksandr R.

@EliLansey um... not quite sure. I actually have never needed to use eval in Python.

Eli Lansey

4:33 PM

ok, new trick. making a list of eval'd things, then going to assign em

what a bizarre language :)

Ajasja

@halirutan No, didn't see that. Thanks (But I saw stackoverflow.com/questions/6783840/…) which reminded me that I could redirect the output

Oleksandr R.

@Ajasja really? Where does that come from, considering that you're on Windows? Or you're not?

Ajasja

I'm on windows. Connecting to another win 7 machine

But I installed CopSSH on the remote machine

Eli Lansey

@OleksandrR. nope, doesn't seem to be working. what a pain...

Ajasja

SubKernels`RemoteKernels`$RemoteCommand :=
"ssh `3`@`1` \"math -mathlink -linkmode Connect `4` -linkname `2` \
-noinit -subkernel >& /dev/null & \"";

Oleksandr R.

4:36 PM

Oh. I don't know CopSSH. Still doesn't explain rcmd not working though...

Ajasja

Yes, exactly.

But I don't have time to dig further (now that it's working:)

Oleksandr R.

Oh, okay--CopSSH is just repackaged Cygwin OpenSSH

Ajasja

Yup

halirutan

@Ajasja hey hey hey.. don't leave without upvoting my excellent, not-accepted answer! ;-)

Nasser M. Abbasi

@user1849 Here is a table showing how long it took between each major release of Mathematica. You can extrapolate to guess when version 9 will be released :) 12000.org/my_notes/compare_mathematica/index.htm

Ajasja

4:39 PM

@halirutan hehe:)

Oleksandr R.

@NasserM.Abbasi I think we're getting spoiled to expect M9 only 2 years after the M8 release. :P

user1849537

Hehe nice. Just got a license for 8, but thankfully it was free.

Eli Lansey

@OleksandrR. here we go vars()['foo'] = bar

that does it

Oleksandr R.

@EliLansey hm, I haven't encountered that syntax before. That said, I've only ever written one thing in Python at the request of a friend (well... two things, two friends) so I only know what I needed to use for those...

Eli Lansey

@OleksandrR. i hear that. i'm working on someone elses code written in python, adding some functionality

but it's such a pain :)

Oleksandr R.

4:51 PM

Python seems a fine language. But of course it's always easier to start from scratch than to try to modify someone else's code.

In a new language, I mean.

So, if you're using dicts anyway, would fromkeys be easier perhaps?

Nasser M. Abbasi

Python has no data typing to speak of. Even Pi is called an 'integer' in Python. At least in Mathematica I can check for Head Integer to make sure I am working with an Integer vs. Real. I find Mathematica much better for scientific work.

Oleksandr R.

@NasserM.Abbasi my "favorite" aspect of Python is that you can do meaningless things like float > numpy.log and get a definite yes or no answer

Stack Exchange

Blog - Stack Exchange: Join Stack Overflow in Berlin for a blowout bash on December 5!

Bethany Marzewski on November 26, 2012

Guten Tag, Berlin!

It’s our last party of the year, and this time, we’re heading to Germany to meet and mingle with the Stack Overflow community! As you may have noticed, we’ve been tearing up Denver this year with our opening reception of our new office and then again during Denver Startup Week last month. So we thought it was about time to bring the party to Europe.

If you’re in or around Berlin on Dec. 5 (or just want to book a last-minute trip), come clink glasses with us at Betahaus (Prinzessinnenstraße 19-20) from 5:30 p.m. – 8:30 p.m. While there, we’ll also be launching our first official translation of Careers 2.0 for German candidates and employers. …

Oleksandr R.

In this case, the answer is yes. float is indeed bigger and better than log.

Anyway:

>>> type(numpy.pi)
<type 'float'>

Eli Lansey

We're not using dicts, that's the problem. So I'm working with strings, turning them into function names which are used elsewhere in the code. I've got it working now, I think.

@NasserM.Abbasi I agree. It's painful not to be able to check the Head.

Oleksandr R.

5:07 PM

@NasserM.Abbasi one is supposed to use isinstance to check types in Python.

Eli Lansey

@OleksandrR. but that only checks if it's in a class or something, right?

not if it's an integer, function, etc

Oleksandr R.

All types are classes in Python.

It being an object-oriented language 'n' all.

Eli Lansey

@OleksandrR. ah.

Nasser M. Abbasi

@Ol

@OleksandrR., I do not know pyhton well. I was just reading documentation on the net last night about it, and that what it was saying. That is has one basic numerical data type. I guess one can make an object for any type, like with C++ classes.

I have it installed and played with it a little.

Oleksandr R.

>>> def f():
...     pass
...
>>> function = type(f)
>>> isinstance(f, function)
True

@NasserM.Abbasi if you want to do numerical work in Python, better to use NumPy.

I quite like Python; when you know Mathematica, it's trivial to learn it (but, other Python programmers probably will not like the look of your code).

Szabolcs

5:19 PM

@MechanicalSnail What OS are you using?

Oleksandr R.

@EliLansey on the other hand, "everything is an object" (Python's catchphrase) doesn't carry as far as "everything is an expression". For example, syntactical elements like list comprehensions are not objects.

Nasser M. Abbasi

5:35 PM

one confusing part also in Python is that arrays work different in numpy vs. outside numpy (i.e in Python) see stackoverflow.com/questions/111983/…. When I have more free time, may be I'll check it out more. But now I am having fun with Mathematica. Just bought few more of Trott books and have lots of reading to do :)

Eli Lansey

gah, now i need to do this for a function

ie

vars(self)['foo'].bar(stuff)

any ideas?

replacing self.foo.bar(stuff)

Oleksandr R.

@EliLansey I don't quite get it. vars(self) returns a dict of variables, of which you return the value for the element with key 'foo'... then what?

Eli Lansey

@OleksandrR. so, i assign ` vars(self)['foo'] = SomeStuff`

the SomeStuff is a complicated thing, linking to an outside "from" library

i want to replace usage like self.foo.bar(stuff)

with self.foo1.bar(stuff)', then self.foo2.bar(stuff)` etc

Oleksandr R.

vars(self).fromkeys(('foo','foo1','foo2',...),stuff) ?

Eli Lansey

@OleksandrR. let me try that

@OleksandrR. no

im not trying to assign values in that last step. i'm calling some other fuctnion bar(stuff) which is part of self.foo

something like that? i'm not too clear on the structure

Oleksandr R.

5:50 PM

Sorry, I don't understand

Eli Lansey

@OleksandrR. hehe, me either :)

Oleksandr R.

Eli Lansey

@OleksandrR. ha!

Oleksandr R.

6:07 PM

@EliLansey BTW, I had wondered... what were you doing scorching that egg?

Eli Lansey

:)

Passover Seder Plate

The Passover Seder Plate Hebrew: ke'ara (קערה) is a special plate containing symbolic foods eaten or displayed at the Passover Seder. Significance Each of the six items arranged on the plate has special significance to the retelling of the story of the exodus from Egypt, which is the focus of this ritual meal. The seventh symbolic item used during the meal — a stack of three matzos — is placed on its own plate on the Seder table. Others place the seder plate on top of the stack of matzos. Symbolic foods The six traditional items on the Seder Plate are as follows: *Maror and chazeret — ...

lanseybrothers.blogspot.com/2006/04/ballistic-eggs.html

Oleksandr R.

Ah! I see. I didn't realise the egg had to be scorched after boiling. That being said I can't claim much familiarity with any of the tenets of the Jewish faith (or any other really)...

Eli Lansey

@OleksandrR. yeah, i just noticed that wiki article didnt have anything about it

the idea is, the scorching commemorates the desctruction

i should prlly update that page, but i'll need to find a source, first

Oleksandr R.

@EliLansey yet, it says about the orange, which seems to me is not a mainstream thing?

Eli Lansey

@OleksandrR. go figure :-)

i can always ask on judaism.stackexchange.com for a reference for the scorched egg

all i know, is that my family has always done it ;-)

Rolf Mertig

6:24 PM

@StackExchange Guten Tag. Kommt noch jemand aus Berlin oder Umgebung?

halirutan

6:39 PM

@RolfMertig Da Stress sicher keine Ausrede ist.. ich denke das lohnt sich fuer mich nicht extra einen Tag zu opfern. Gehst du hin?

Rolf Mertig

@halirutan Free Food& Drinks ... Ja, vielleicht brauche ich ja mal einen Mitarbeiter. Und weit isses auch nicht.

@halirutan: BTW: I prefer a kernel-only installer, like Import["http://.../install.m"]. Just working out one ...

halirutan

@RolfMertig Richtig. fuer dich ist es nur ein Katzensprung.

Rolf Mertig

Kannst gerne kommen, Quartier gibt's hier umsonst (auch 2)

@halirutan was macht den der dr. ?

halirutan

@RolfMertig Nur der Halbjahresbericht, das Paper und das Projekt bleibt dann liegen.. Vor Weihnachten ist mir das zuviel. Zumal ich letzte Woche erst als Zeuge zum Gericht musste.. yippii noch so was, was ich gebraucht habe.

@RolfMertig Ja, darauf laeuft das aktuelle Projekt hinaus.

Rolf Mertig

Aber dann zum Mathematica - Tag, ordinate.de/mathematicaTag.htm, im Februar, gell?

halirutan

6:44 PM

@RolfMertig Aehm, da habe ich noch nicht mal eine Einladung.

Rolf Mertig

ts ts. schicke ich dir gleich von carsten

halirutan

@RolfMertig Regarding the installer. I prefer a kernel solution too, but (in V7) how do you extract a zip/tar/..?

That was the problem and the only reason for java.

Rolf Mertig

Sure. Java, JLink, but why a .nb ? I suppose some people still prefer Kernel-only mode.

Do you really need Update[] ? I am thinking of always reinstalling everything,or?

halirutan

@RolfMertig Not now, but I just wanted a function to load the new package and ReinstallEverything sounded weird ;-)

And the reason for the .nb was that I included test-examples in this files so my colleagues see what the stuff does.

halirutan

7:01 PM

@RolfMertig About the M-day in Berlin: do you think Mr. Ordinate would mind to have the thing announced here? I could create a Community Promotion Add.

The worst thing that happens is, that many people will come.

Rolf Mertig

@halirutan: sure, just ask Mr. O. Of course if people see that Leonid will come, he needs a bigger room ... (bye now, muss papierschiffe falten ...)

halirutan

@RolfMertig OK and bye.

Murta

8:38 PM

Someone here have heard about Mathics? mathics.org and mathics.net

Very interesting

ssch

9:06 PM

@Murta Interesting!

Szabolcs

9:22 PM

It's nice. It was mentioned a couple of times.

Murta

9:36 PM

@ssch I always complain that Matlab has Octave. Maybe Mathics could be something similar.

Szabolcs

That would definitely be nice, but honestly I doubt it ... much of the power of Mathematica is in built-in functionality, but just the core language. Also, I think implementing the core language in a compatible way is a lot more difficult than in the case of Matlab ... too many dark corners

you might also like to take a look at omath.org

They've written down a lot about how to implement the details

@rm-rf I think it would be good to summarize some of this chat message in the meta question itself.

halirutan

10:14 PM

@einbandi hmm, this is a bug in AbsoluteOptions

For gr = Plot[Sin[x], {x, -Pi, Pi}, Frame -> True] I get here

While when I extract the FameTicks and look at them (or create a new graphic with them) I have (1) all labels as numerical value like 1. and (2) they are more

@einbandi Look at Show[#, FrameTicks -> (FrameTicks /. AbsoluteOptions[#, FrameTicks])] &@gr

Szabolcs

I've been looking at the migration proposals today. Does anyone think this is worth including? --> stackoverflow.com/questions/8786389/…

It has some useful benchmarking, but I don't think I ever referred back to it.

Another one I'm not sure whether to include: stackoverflow.com/questions/8740033/…

The answer is very surprising for me, performance wise, so it was very useful.

halirutan

@Szabolcs I got a bit lost in the migrate/ don't migrate war. Basically I would like to migrate the first one since it is highly voted and has no answer but then all the SO mods come with there "it's ontopic on SO so it stays here politics".. Are the two questions already in the migration post in meta?

Szabolcs

@halirutan No, they are not. Actually my question was: should I post them there? I posted a number of candidates today to move this thing forward ...

(see rm's pinned post in the sidebar)

I was going through old SO questions one by one

Then there's also this one: stackoverflow.com/questions/8700934/… The might seem interesting to me because I posted/answered them ... sorry about that

halirutan

@Szabolcs But when migration of Q > 60 days is turned off what about your Q from Jan 5th?

This is a no-go then, right?

Szabolcs

@halirutan As I understood we can ask for a number of old questions to be migrated, but it is going to be a one time event. There's a meta post for deciding what we should ask to be migrated.

23

Q: How to migrate old questions to a new graduated site

Preamble Since their introduction, migrations have been largely well received, but still cause some problems, typically in the area of folks migrating questions to sites they didn't understand or migrating subpar questions. One of the key guidelines for migrating questions (after "don't migrate...

halirutan

10:30 PM

@Szabolcs Ah, ok. I read something like this but due to my high interest in such political decisions it must have slipped through.

Szabolcs

Politics is unpleasant but necessary ...

halirutan

@Szabolcs For those two Q you asked for we already have the "large pdf" Q&A which covers basically the same and is highly voted.

Szabolcs

Yes, you're right, that one already exists

halirutan

What is the general rule if we already have very similar questions? Does this matter in any way or should we rely the migration purely on the quality of the question in question?

Szabolcs

It seems it's also somewhat up for debate, but personally I'd like to have those questions people often need to refer to here

I don't use SO any more. Sometimes I remember a question, I search here, I can't find it. The it turns out it was from the SO era.

If it has high quality answers, then it's going to attract references

if it has important information, it is going to attract references again, and it might attract edits too (keep it up to date, e.g. for version 9, clarifications, etc.) --- but stuff on SO tends not to be maintained any more (so it's better to move them here)

@halirutan I think that if the question would be merged with something that already exists here, it's less work to just update the question here and not migrate the old one.

@halirutan so in this particular case maybe it's better to leave those on SO

I'm tired and I have a lecture tomorrow again, I think I need to log off for today

rm -rf

10:53 PM

@Szabolcs The guy who answered is the one behind mathics... Maybe you could ping him again to let him know of this site (he seems to have ignored the previous invite...)

Szabolcs

@rm-rf I know! :-)

halirutan

@Szabolcs Yes, I see your point and I agree.

einbandi

11:33 PM

@halirutan ja, muss wohl an AbsoluteOptions liegen. Hätte ich früher gewusst dass du deutsch sprichst, wär das gestern noch etwas einfacher gegangen. Danke nochmal! :-)

halirutan

@einbandi Nunja, Chatsprache ist nunmal English und eigentlich rede ich nie Deutsch hier. Aber vielleicht ist es manchmal ganz lustig fuer die anderen eine andere Sprache zu sehen ;-)

@Ajasja Still here?