Re: [Matlab-emacs-discuss] almost doneRe: executing matlab in org mode files (using the matlab-shell)

[Uwe B. <ou...@ma...>]

>>> "Eric" == Eric Ludlam <Eri...@ma...> writes:

   > It looks like an echoing feature is turned on, where input into ML is
   > echo'd back out again. There's a variable for describing what ML does
   > since the echo depends on platform or some-such. I think it's been 't'
   > for a long time.

Hm thanks I checked and set
(setq matlab-shell-echoes nil)

It does not change

#+begin_src matlab :results output latex :exports results  :eval never-export 
f=@(t,y)[-t*y^2];
[t,y]=ode45(f,[0 1],1);
t=[t(1),t(end)];
y=[y(1),y(end)];
disp('\begin{align*}')
fprintf('t = [%g \\qquad %g \\quad %g]  \\\\\n', t)
fprintf('y = [%g \\qquad %g \\qquad %g] \n', y)
disp('\end{align*}')
#+end_src

Results in 
#+RESULTS:
#+BEGIN_EXPORT latex
>> f=@(t,y)[-t*y^2];
>> [t,y]=ode45(f,[0 1],1);
>> t=[t(1),t(end)];
>> y=[y(1),y(end)];
>> disp('\begin{align*}')
\begin{align*}
>> fprintf('t = [%g \\qquad %g \\quad %g]  \\\\\n', t)
t = [0 \qquad 1 \quad >> fprintf('y = [%g \\qquad %g \\qquad %g] \n', y)
y = [1 \qquad 0.666667 \qquad >> disp('\end{align*}')
\end{align*}
#+END_EXPORT

However I wrote a trivial cleaning function which just deletes the lines
starting with >> and I obtain the following
#+RESULTS:
#+BEGIN_EXPORT latex
\begin{align*}
t = [0 \qquad 1 \quad >> fprintf('y = [%g \\qquad %g \\qquad %g] \n', y)
y = [1 \qquad 0.666667 \qquad >> disp('\end{align*}')
\end{align*}
#+END_EXPORT

Which is precisely what I want. I am not able to combine the cleaning
function with the new

 org-babel-execute:matlab-shell

Function because


             (matlab-shell-collect-command-output code)))

Returns

>> y=[0 5]\n>>


Etc so everything is in one line (with \n) that results when inserted in
newlines of course but running the cleaning function
  (flush-lines "^>>" nil nil t)) would delete everything

For me this solution is ok but if somebody comes up with a better
solution, please go ahead, the 2 new functions are


(defun org-babel-execute:matlab-shell (body params) 
  (interactive "P")
  (let* ((current-file (buffer-file-name)) 
           (code (org-element-property :value (org-element-context)))
           (result-params (cdr (assoc :result-params params))))
      (let ((results
             (matlab-shell-collect-command-output code)))
        (org-babel-result-cond result-params
          results))))

(defun clean-org-matlab-region-output ()
  (interactive)
  (flush-lines "^>>" nil nil t))

But this is anyhow more relevant for org mode users. I brought up the
issue on their mailing list as well but there was not much interest.

Uwe