You might consider the alternative, no-frills approach below. I defined
a new execute function that strips the header and >> out of the output.
It won't support any kind of session or header variables, but if you
don't use those it might work for you.
#+BEGIN_SRC emacs-lisp
(defun org-babel-execute:matlab (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)))
m-file
md5-hash)
(with-temp-buffer
(insert code)
(setq md5-hash (md5 (buffer-string))
mbuffer (format "*m-%s*" md5-hash)
m-file (format "m-%s.m" md5-hash)))
;; create the file to run
(with-temp-file m-file
(insert code))
(let ((results (shell-command-to-string
(concat
"/Applications/MATLAB_R2013a.app/bin/matlab "
"-nodesktop -nojvm -nosplash -nodisplay <"
m-file))))
(delete-file m-file)
(when results
;; strip out >>
(setq results (replace-regexp-in-string ">> " "" results))
;; remove first 10 lines that are the header.
(setq results (mapconcat 'identity
(nthcdr 10 (split-string results "\n"))
"\n")))
(org-babel-result-cond result-params
results))))
#+END_SRC
#+begin_src matlab :results output latex
clear all;
syms e p R g w K K2;
phi=[(e + (e+p)*R^2)^((g-1)/2);((e+p)*R*sqrt(1+R^2))/(e+(e+p)*R^2)];
jac=jacobian(phi,[e,p]);
ltxjac=latex(jac);
disp(ltxjac)
#+end_src
#+RESULTS:
#+BEGIN_LaTeX
\left(\begin{array}{cc} {\left(\left(e + p\right)\, R^2 +
e\right)}^{\frac{g}{2} - \frac{3}{2}}\, \left(R^2 + 1\right)\,
\left(\frac{g}{2} - \frac{1}{2}\right) & R^2\, {\left(\left(e + p\right)\, R^2
+ e\right)}^{\frac{g}{2} - \frac{3}{2}}\, \left(\frac{g}{2} -
\frac{1}{2}\right)\\ \frac{R\, \sqrt{R^2 + 1}}{\left(e + p\right)\, R^2 + e} -
\frac{R\, {\left(R^2 + 1\right)}^{\frac{3}{2}}\, \left(e +
p\right)}{{\left(\left(e + p\right)\, R^2 + e\right)}^2} & \frac{R\, \sqrt{R^2
+ 1}}{\left(e + p\right)\, R^2 + e} - \frac{R^3\, \sqrt{R^2 + 1}\, \left(e +
p\right)}{{\left(\left(e + p\right)\, R^2 + e\right)}^2} \end{array}\right)
#+END_LaTeX
Uwe Brauer writes:
>>>> "John" == John Kitchin <jkitc...@andrew.cmu.edu> writes:
>
> > Here is an example using sympy. I think you will have to wrap the matlab
> > output in $$ yourself if that is what you want.
>
> Right. Using your example I obtain:
> ,----
> |
> |
> | < M A T L A B (R) >
> | Copyright 1984-2010 The MathWorks, Inc.
> | Version 7.10.0.499 (R2010a) 32-bit (glnx86)
> | February 5, 2010
> |
> |
> | To get started, type one of these: helpwin, helpdesk, or demo.
> | For product information, visit www.mathworks.com.
> |
> | >> >> >> >> >> >>
> | ltxjac =
> |
> | \left(\begin{array}{cc} {\left(\left(e + p\right)\, R^2 +
> e\right)}^{\frac{g}{2} - \frac{3}{2}}\, \left(R^2 + 1\right)\,
> \left(\frac{g}{2} - \frac{1}{2}\right) & R^2\, {\left(\left(e + p\right)\,
> R^2 + e\right)}^{\frac{g}{2} - \frac{3}{2}}\, \left(\frac{g}{2} -
> \frac{1}{2}\right)\\ \frac{R\, \sqrt{R^2 + 1}}{\left(e + p\right)\, R^2 + e}
> - \frac{R\, {\left(R^2 + 1\right)}^{\frac{3}{2}}\, \left(e +
> p\right)}{{\left(\left(e + p\right)\, R^2 + e\right)}^2} & \frac{R\,
> \sqrt{R^2 + 1}}{\left(e + p\right)\, R^2 + e} - \frac{R^3\, \sqrt{R^2 + 1}\,
> \left(e + p\right)}{{\left(\left(e + p\right)\, R^2 + e\right)}^2}
> \end{array}\right)
> |
> | >>
> `----
>
> That is not perfect but much better than the original solutions, thanks
>
> Uwe
--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
