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by dennisw
Tue May 13, 2014 5:23 am
Forum: Mathematica
Topic: Exporting graphics on a headless Pi
Replies: 9
Views: 11005

Re: Exporting graphics on a headless Pi

I did things differently. The headless rPi was running a c program and top showed it to be less than 1% busy doing only that. So as not to disturb that critical process, I used cp <filename> <filename.bak> from the terminal of the ssh originating second rPi and then scp <filename.bak> pi@192.168.xx...
by dennisw
Tue Apr 22, 2014 12:54 am
Forum: Wolfram Language
Topic: Classify[] function
Replies: 1
Views: 10405

Re: Classify[] function

Mine says:
Get::noopen: Cannot open MachineLearning`.
by dennisw
Thu Apr 03, 2014 1:14 am
Forum: Wolfram Language
Topic: Wolfram as a cron task
Replies: 2
Views: 10888

Re: Wolfram as a cron task

Hello all, Has anyone tried to have a wolfram script run as a cron task? My script runs fine at the command prompt but does not work when setup as a cron task, either as user pi or when using sudo to run crontab. This line of code: datTicker = Quiet[FinancialData[inTicker, strStartDate, "Value"]] g...
by dennisw
Sun Mar 30, 2014 1:03 am
Forum: Mathematica
Topic: Cannot open CCodeGenerator
Replies: 15
Views: 6009

Re: Cannot open CCodeGenerator

Something to keep in mind is that the current release of Mathematica for Raspberry Pi is referred to as a pilot release* and that this version (10) hasn't been released yet for other platforms. As such, I would consider it "beta" and not necessarily complete. * in both http://blog.wolfram.com/2013/1...
by dennisw
Tue Mar 25, 2014 1:53 am
Forum: Mathematica
Topic: What is wrong>?
Replies: 1
Views: 2374

Re: What is wrong>?

Raspberry Pi runs Mathematica 10. I get a different error than you, though. FindFit::fitd: First argument pun in FindFit is not a list or a rectangular array. so I don't think you posted all the relevant code. If you need support for Mathematica 9, you should go to a general Mathematica support forum.
by dennisw
Wed Mar 19, 2014 3:29 am
Forum: Mathematica
Topic: Cannot open CCodeGenerator
Replies: 15
Views: 6009

Re: Cannot open CCodeGenerator

DeeJay wrote:Certainly not my area, but glancing at this page http://reference.wolfram.com/mathematic ... erate.html seems to suggest you might need

Code: Select all

Needs["CCodeGenerator`"]
first?
The Needs statement gives me the error messages reported by the OP.
by dennisw
Wed Jan 29, 2014 1:33 am
Forum: Advanced users
Topic: Shaders as parallel processor?
Replies: 3
Views: 1413

Re: Shaders as parallel processor?

This section isn't for mathematicS it's for MathematicA.
by dennisw
Mon Dec 02, 2013 2:28 am
Forum: Mathematica
Topic: Remote use
Replies: 7
Views: 7796

Re: Remote use

I use X11 forwarding over ssh, but it's a fast connection. You should try it to see how it works for you.
by dennisw
Thu Nov 28, 2013 1:58 am
Forum: Mathematica
Topic: Mathematica download?
Replies: 9
Views: 7211

Re: Mathematica download?

Try all lower case (and no "e" in "usr"):

Code: Select all

/usr/bin/mathematica
by dennisw
Tue Nov 26, 2013 1:25 am
Forum: Mathematica
Topic: Mathematica download?
Replies: 9
Views: 7211

Re: Mathematica download?

Try:

http://archive.raspberrypi.org/debian/p ... _armhf.deb

Then one method to install it is:

sudo dpkg -i wolfram-engine_10.0.0+2013112003_armhf.deb
sudo apt-get install -f --fix-missing
by dennisw
Sat Nov 23, 2013 12:14 pm
Forum: Mathematica
Topic: Where's wolfram-engine? Messed up sources.list?
Replies: 13
Views: 12979

Re: Where's wolfram-engine? Messed up sources.list?

Yes,

Code: Select all

$ cat /etc/apt/sources.list.d/wolfram.list 
# Wolfram Research, Inc. APT Repository (for WolframEngine)

deb http://repository.wolfram.com/raspbian/ stable non-free
$ cat /etc/apt/sources.list.d/raspi.list 
deb http://archive.raspberrypi.org/debian/ wheezy main
by dennisw
Fri Nov 22, 2013 9:14 pm
Forum: Mathematica
Topic: Where's wolfram-engine? Messed up sources.list?
Replies: 13
Views: 12979

Re: Where's wolfram-engine? Messed up sources.list?

It appears to be in raspberrypi.org's repository but not in raspbian's.

Try: http://archive.raspberrypi.org/debian/p ... am-engine/

My sources.list:

deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi
by dennisw
Fri Nov 22, 2013 5:40 pm
Forum: Mathematica
Topic: Mathematica license terms
Replies: 6
Views: 4938

Re: Mathematica license terms

Yes, I would think running using X forwarding (tunnel) would be allowed, because it's still running on the Pi. It's just that the input is coming from a PC and the output is going there. However, this probably should be clarified by someone from Wolfram just to be safe.
by dennisw
Fri Nov 22, 2013 5:38 pm
Forum: Mathematica
Topic: How to launch the notepad version of Wolfram?
Replies: 2
Views: 2415

Re: How to launch the notepad version of Wolfram?

Launching it in the background will return you to a shell prompt (freeing up the terminal for continued use):

$ mathematica &

(you don't type the dollar sign, of course)
by dennisw
Fri Nov 22, 2013 5:35 pm
Forum: Mathematica
Topic: Exporting graphics on a headless Pi
Replies: 9
Views: 11005

Re: Exporting graphics on a headless Pi

I just ssh -X into my Pi. In other words, I use X forwarding. There shouldn't be any need for a virtual frame buffer or something like xvnc. Please let me know if the following doesn't work for you. In /etc/ssh/sshd_config on the Pi, change X11Forwarding to yes in order to enable it. For your PC, ss...
by dennisw
Fri Nov 22, 2013 2:01 pm
Forum: Mathematica
Topic: Unable to install wolfram
Replies: 11
Views: 7634

Re: Unable to install wolfram

I don't know which other post you're referring to. Try this command: ls -ld /lib/arm-linux-gnueabi* If the result shows a directory name that ends in "hf" then you're running the hard float distribution. On my Pi, this command: cat /etc/apt/sources.list outputs: deb http://mirrordirector.raspbian.or...
by dennisw
Fri Nov 22, 2013 7:56 am
Forum: Mathematica
Topic: No menu/desktop shortcuts
Replies: 12
Views: 20053

Re: No menu/desktop shortcuts

These instructions for creating desktop shortcuts and menu entries in LXDE should help:

http://lkubaski.wordpress.com/2012/06/2 ... shortcuts/
by dennisw
Fri Nov 22, 2013 7:54 am
Forum: Mathematica
Topic: Mathematica on a 256MB Model B
Replies: 9
Views: 6097

Mathematica on a 256MB Model B

For those who may be wondering, Mathematica works on a 256MB Model B, although sluggishly. I don't have a 512MB one to compare it to yet though,

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