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Re: [O] workflow, matlab+latex in org file

From: Eric S Fraga
Subject: Re: [O] workflow, matlab+latex in org file
Date: Mon, 11 Jul 2016 17:42:34 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.94 (gnu/linux)

On Monday, 11 Jul 2016 at 12:32, Uwe Brauer wrote:
> Hello
> I want in a org file, to include matlab code and run it (that I know how
> to do)
> Then I want certain results, which are symbolic variables, expressed in
> latex, we I achieve  using matlab's latex command.
> Like
> #+begin_src matlab :results output
> 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)
> #+end_src

A bit of a kludge but, if you don't want to modify the ob-matlab code,
you can explicitly generate LaTeX into a file and use it directly:

--8<---------------cut here---------------start------------->8---
#+begin_src octave :exports none :results output
  clear all
  pkg load symbolic
  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)];

  ltxjac = latex(jac);
  fid = fopen("jacobian.tex","w");
  fprintf(fid, "%s\n", ltxjac);

--8<---------------cut here---------------end--------------->8---

I don't have MATLAB so have tested with octave instead...

: Eric S Fraga (0xFFFCF67D), Emacs, Org release_8.3.4-869-gf2c421

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