Wolfram Mathematica

Szabolcs

12:26 AM

@MikeHoneychurch Good idea. I just checked a class of bugs in Graph that affected me, and that one has been fixed.

It's also a question what to do with fixed bugs. Tag them with the version of the buggy release perhaps?

Szabolcs

12:40 AM

0

Q: What to do with [bugs] questions now that version 9 is released?

@MikeHoneychurch asked in chat what we should do with questions that have been tagged as [bugs] now that version 9 was released. Some of these bugs might be fixed in version 9. This post is to start a discussion for deciding this.

discussion

Mathematica StackExchange (meta)

1:10 AM

1

Q: What to do with [bugs] questions now that version 9 is released?

@MikeHoneychurch asked in chat what we should do with questions that have been tagged as [bugs] now that version 9 was released. Some of these bugs might be fixed in version 9. This post is to start a discussion for deciding this.

discussion

Brett Champion

2:35 AM

@Szabolcs You could always use tin to read news (need to compile from sources on OS X, though.)

Mathematica StackExchange (meta)

0

Q: Has the Mathematica StackExchange uploader stopped working for anyone else?

The Mathematica StackExchange uploader stopped working after I installed V9. Has this happened for anyone else?

discussion

Szabolcs

4:52 AM

@F'x do you ever use Workbench?

Kārlis Baumanis

6:20 AM

can you tell me how to get x and y out of this

(x - x1)^2 + (y - y1)^2 = r1^2,
(x - x2)^2 + (y - y2)^2 = r2^2,
(x - x3)^2 + (y - y3)^2 = r3^2

if I know x1, x2, x3 and r1, r2, r3

x1 = 5
y1 = 16
r1 = 7

x2 = 16
y2 = 15
r2 = 6

x3 = 3
y3 = 9
r3 = 9

F'x

7:08 AM

@Szabolcs no, why?

Nasser M. Abbasi

7:38 AM

@KārlisBaumanis x=-12.1695 and y= -1.79924. Use LeastSquares[]

any one would know why my Mathematica 9 stopped beeping? I made sure all notifications have beep on them. But I see error messages go to console, and no beep. Audio works ok on PC. I can hear music. Looked at optionInspector, do not see anything there

Also when I do Beep[] I do hear a beep.

I fixed it! I had to turn on the "Minor user interface warning also". That was off for some reason. case closed

soandos

9:28 AM

Can anyone offer a good into to mathematica syntax? (&, #, @, etc). I know what some of these are in the abstract (# means pure function for example) but I don't really know what they mean concretely. Is there a good reference?

P. Fonseca

9:52 AM

Anyone from WRI? I just posted a bug/cry for help, on support (M9 keeps crashing, and this is not the BSOD thing), and received an automatic answer on my e-mail (up to here everything is normal), stating "Mathematica 8 is available, See what's new at: wolfram.com/mathematica/new-in-8"; (this is the part that needs correction). Should I do a bug report on the bug report feedback message?

Kārlis Baumanis

10:48 AM

thanks! Can you give an example how to use LeastSquares on this equation? I can't understand what is the right syntax

c1 = {(x - x1)^2 + (y - y1)^2 = r1^2}
c2 = {(x - x2)^2 + (y - y2)^2 = r2^2}
c3 = {(x - x3)^2 + (y - y3)^2 = r3^2}

a = LeastSquares[{c1, c2, c3}, x]

Mike Honeychurch

I had planned to download an install 9 in the next day or two but just came across this: groups.google.com/group/comp.soft-sys.math.mathematica/… Unfortunately I am still on Mac 10.6.8. Has anyone else experienced any problems running V9 on 10.6.8?

Nasser M. Abbasi

12:27 PM

@KārlisBaumanis, just type

eq1 = (x - x1)^2 + (y - y1)^2 == r1^2;
eq2 = (x - x2)^2 + (y - y2)^2 == r2^2;
eq3 = (x - x3)^2 + (y - y3)^2 == r3^2;

c = CoefficientArrays[{eq1, eq2, eq3}, {x, y}];
LeastSquares[c[[2]], c[[1]]] // N

{-12.1695, -1.79924}

FredrikD

12:57 PM

Does anyone know what the issue is w version 9 on Windows? The windows variant is no longer downloadable from Wolfram.

P. Fonseca

1:19 PM

@FredrikD Due to font problems some of us suffered during installation, a repackaged version that resolves the installation problems will most likely be made available during the day.

Kārlis Baumanis

3:35 PM

I have something like this

During evaluation of In[282]:= CoefficientArrays::ivar: 370 Sqrt[797] is not a valid variable. >>

During evaluation of In[282]:= LeastSquares::matrix: Argument {370 Sqrt[797],{-((7667140 Sqrt[Plus[<<2>>]^2+Plus[<<2>>]^2])/2783)+(64009 (357604/797+4097152081/(635209 Plus[<<2>>])))/(1594 Sqrt[Plus[<<2>>]^2+Plus[<<2>>]^2]),-((1621895 Sqrt[Plus[<<2>>]^2+Plus[<<2>>]^2])/4056)+(48672 (17424/797+9475854336/(635209 Plus[<<2>>])))/(797 Sqrt[Plus[<<2>>]^2+Plus[<<2>>]^2])}} at position 1 is not a non-empty rectangular matrix. >>

FredrikD

@P.Fonseca ok, thanks for the update

Brett Champion

@MikeHoneychurch I spent the entire V9 development cycle on 10.6.8, although I tend to have so many copies of Mathematica installed that opening notebooks by clicking on them has a near-zero chance of picking the version of Mathematica I want.

halirutan

@rm-rf Can you delete this answer mathematica.stackexchange.com/a/15622/187

?

I worked it as solution into the question of the OP where it belongs.

Stack Exchange

Blog - Stack Exchange: SE Podcast #38 – This One’s At Least a 4/10

Alex Miller on December 03, 2012

Welcome to Stack Exchange podcast #38 with Joel, Jay, David, and new special guest Will Cole, PM on the Careers team. We’re doing a deep dive into Careers today, as we have the launch of Careers in German coming up!

Stack Overflow Careers 2.0 is launching in Germany! (Much has happened since the last time we talked about Careers 2.0 on the podcast.)

So Will, tell us about Careers 2.0! Will gives us an overview about what it is and why it’s awesome. It has two products: job listings and CV search. They are both neato. …

Eli Lansey

3:51 PM

@P.Fonseca Must ... stop ... obsessively ... checking ... if ... it's ... available ... yet ...

rm -rf

4:07 PM

@halirutan If it's an answer, why not let it be an answer?

halirutan

@rm-rf Hmm, don't know. I asked him to work it as section into his question since I've seen this many times.

Wait, then I have to delete the section I added.

Kiyura

4:31 PM

Still don't have any answer to Pt. 2 of this question :(

11

Q: Mathematica as a normal programming language

I'm interested in Mathematica's core language for both practical development and as an object of computer science study. Actually, the former is more of a means to the latter. I would like to create complete applications, but mainly to get experience and ideas for creating my own language. I have...

programming

I am still planning to accept an answer, btw, I'm just waiting till I can adequately research things and possibly add to the answers myself

acl

4:47 PM

@Kiyura you should probably just ask support; but eg read the home license agreement, it limits what you can do with it

Kiyura

@acl, I can't find a license agreement specific to the home edition; only this: wolfram.com/legal/agreements/wolfram-mathematica.html

And that doesn't seem to address the issue

My issue, to make it a little clearer, is this: If I compile Mathematica code and link it such that it can be run as a standalone C program, can I distribute that and the source freely?

It seems like yes, this shouldn't be a problem, but I just wanted to see if there was anything expressly forbidding that

acl

5:03 PM

@Kiyura well, go here and hover the mouse over the "i" under the red "Home"

@Kiyura try asking support. they should be able to give you the definitive answer

so after playing around with a trial, do you find it practical to use mathematica for producing C code for your work? because if you do I'd love to find out how

Kiyura

I haven't gotten to play around with a trial yet - support still hasn't gotten back to me

My email address borked their user portal so I can't download it

Szabolcs

5:28 PM

Can anyone reproduce this crash with v9? --> mathematica.stackexchange.com/questions/15628/…

@acl Since you're here, can you please try LogPlot[x, {x, -1, 1}, WorkingPrecision -> 10]? It crashes my kernel in version 9.

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