Re: org-babel matlab example

[etimecowboy <etimecowboy@googlemail.com>]

From: Dan Davison <davison@stats.ox.ac.uk>
Subject: Re: org-babel matlab example
Date: Sat, 11 Sep 2010 12:23:17 -0400

> Dan Davison <davison@stats.ox.ac.uk> writes:
> 
>> etimecowboy <etimecowboy@googlemail.com> writes:
>>
>>> Hi everybody,
>>>
>>> I am learning to use org-babel to evaluate in-line Matlab code block,
>>> but I cannot make it works when I press the "C-c C-c", nor "C-c C-v
>>> e".
>>
>> What happens when you try C-c C-c or C-c C-v e ? There is an issue with
>> matlab and octave: they return the value of the last /unassigned/
>> computation
> 
> A better way to say this is: they return the value of the special
> variable "ans". So whatever you do, at the end of the block you need to
> ensure that "ans" has the value that you want returned.
> 
> I've updated the Worg page on Matlab and Octave:
> 
> http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-octave-matlab.php
> 
> Dan
> 
> 
>>, so simply ending the code block with a variable name "x" is
>> not enough. Could you try one of the following schemes please, and let
>> us know if that solves it:
>>
>> #+begin_src matlab :exports results
>> n = [1:10];
>> x = 5*n+4;
>> ans = x
>> #+end_src
>>
>> #+begin_src matlab :exports results
>> n = [1:10];
>> x = 5*n+4;
>> x + 0
>> #+end_src
>>
>>
>>> The export of code works, but the results was not there. My in-line code is like this:
>>
>> There was a little typo in your original block: the keyword is
>> ":exports" with an s.
>>
>> Dan
>>
>>>
>>> #+begin_src matlab :export results
>>> n = [1:10];
>>> x = 5*n+4;
>>> x
>>> #+end_src
>>>
>>> Is there someone can provide me a working example? Thanks a lot.
>>>
>>>
>>> -----------------------------
>>>
>>> etimecowboy@gmail.com
>>>
>>>       _.,----,._
>>>     .:'        `:.
>>>   .'              `.
>>>  .'                `.
>>>  :                  :
>>>  `    .'`':'`'`/    '
>>>   `.   \  |   /   ,'
>>>     \   \ |  /   /
>>>      `\_..,,.._/'
>>>       {`'-,_`'-}
>>>       {`'-,_`'-}
>>>       {`'-,_`'-}
>>>        `YXXXXY'
>>>          ~^^~
>>>
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>>
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Dear Dan,

I have checked the Worg page you updated and tried your example. It works! The ans variable is the secret! Thanks a lot. I suggest org should provide some examples in its user's guide, not only on the topic of Babel but also Table, Hyperlink, Picture, and etc.

-----------------------------

etimecowboy@gmail.com

      _.,----,._
    .:'        `:.
  .'              `.
 .'                `.
 :                  :
 `    .'`':'`'`/    '
  `.   \  |   /   ,'
    \   \ |  /   /
     `\_..,,.._/'
      {`'-,_`'-}
      {`'-,_`'-}
      {`'-,_`'-}
       `YXXXXY'
         ~^^~