Hi Juan and d.tchin,
One thing I'd like to ask for advice about is the behaviour of tabular
data structures containing strings. For example
#+begin_src octave
ans = [['a','b'];['c','d']]
#+end_src
#+results:
: acbd
I don't know if my syntax above is correct, but it seems to me that this
is a 2x2 table of some sort and so it would seem natural to me for that
to return
| a | b |
| c | d |
however, if you look at the code we are using below, you'll see that
ischar() returns 1 for this object and so it gets written as a
string. Can you suggest how we should alter the octave/matlab code
below? Or perhaps people don't use tabular data structures containing
strings in these languages?
if ischar(ans), fid = fopen('%s', 'w'); fprintf(fid, '%%s\\n', ans);
fclose(fid);
else, dlmwrite('%s', ans, '\\t')
end"
Dan
Juan Pechiar <pech...@computer.org> writes:
> Hi,
>
> Below is a single PATCH for the 3 issues:
> - passing tables with EXP or complex notation to octave
> - correct formatting of matrixes into octave
> - interpretation of octave output as table
>
> Regards,
> .j.
>
> 8<------------------------------------------------------------
>
> diff --git a/lisp/ob-octave.el b/lisp/ob-octave.el
> index 8e99f86..bf7fdd3 100644
> --- a/lisp/ob-octave.el
> +++ b/lisp/ob-octave.el
> @@ -119,8 +119,9 @@ end")
> Converts an emacs-lisp variable into a string of octave code
> specifying a variable of the same value."
> (if (listp var)
> - (concat "[" (mapconcat #'org-babel-octave-var-to-octave var ",
> ") "]")
> - (format "%S" var)))
> + (concat "[" (mapconcat #'org-babel-octave-var-to-octave var
> + (if (listp (car var)) "; " ",")) "]")
> + (format "%s" var)))
>
> (defun org-babel-prep-session:octave (session params &optional
> matlabp)
> "Prepare SESSION according to the header arguments specified in
> PARAMS."
> @@ -181,7 +182,7 @@ value of the last statement in BODY, as elisp."
> (org-babel-eval
> cmd
> (format org-babel-octave-wrapper-method body tmp-file
> tmp-file))
> - (org-babel-eval-read-file tmp-file))))))
> + (org-babel-octave-import-elisp-from-file tmp-file))))))
>
> (defun org-babel-octave-evaluate-session
> (session body result-type &optional matlabp)
>
> 8<------------------------------------------------------------
>
> On Sun, Aug 01, 2010 at 05:07:27PM -0300, Juan wrote:
>> I'm starting to work with ob-octave and found several problems:
>>
>> The first, for which I have a fix (see patch below) is that octave's
>> output was passed on as a string instead of being interpreted as a table:
>
>
>> The second problem is that if I use octave table output as input to
>> another block, it gets interpreted as a string instead of a vector:
>
>
>> This has to do with the EXP notation. The 'e+00' suffix makes the
>> whole table into a string. The problem is with "%S" in the formatting
>> inside org-babel-octave-var-to-octave.
>
>
>> A third problem is with org-babel-octave-var-to-octave.
>>
>> For example:
>>
>> : (org-babel-octave-var-to-octave '( ( 1 2 3 ) ( 4 5 6 ) ))
>> : -> "[[1, 2, 3], [4, 5, 6]]"
>>
>> This is not a 2x3 matrix, but a 1x6 vector:
>>
>> : octave-3.2.3:1> [[1,2,3],[4,5,6]]
>> : ans =
>> : 1 2 3 4 5 6
>>
>> a semicolon ';' or '\n' is needed between rows instead of a comma.
>
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