36
$\begingroup$

Is it possible to export the output expressions from Mathematica computations (e.g., equations) in valid MATLAB syntax?

|improve this question
$\endgroup$
  • 4
    $\begingroup$ Which equations? Can you be more specific on what precisely it is you want to do? one equation? a list of them? Cut and paste? Programmatically export? $\endgroup$ – acl Nov 2 '12 at 22:23
  • $\begingroup$ @acl just an equation with Log s exponentials error functions. For example f[x_]=Log[...]+err[..]*Exp[..]. Something that sort. I know there is a command // InputForm but the output has for example $E$ which MATLAB will not understand. I only want to copy paste the equation to MATLAB. Still unclear? $\endgroup$ – Seyhmus Güngören Nov 2 '12 at 23:29
  • $\begingroup$ This is not exactly an answer, but do to the large chat under previous answer I would like to point out that ToMatlab, provides the page where you can find the package, however many struggles with not being able to download it. I had the same problem until I pressed down alt key and pressed the link at the bottom of the page. Might save a bit of time! $\endgroup$ – ALEXANDER Apr 9 '14 at 10:08
45
$\begingroup$

There is the ToMatlab package that will convert Mathematica expressions to MATLAB equivalents. For example:

<<ToMatlab`
Expand[(x + Log@y)^5] // ToMatlab
(* x.^5+5.*x.^4.*log(y)+10.*x.^3.*log(y).^2+10.*x.^2.*log(y).^3+5.* ...
        x.*log(y).^4+log(y).^5; *)

It even conveniently breaks it using ... and can also convert matrices:

RandomInteger[5, {5, 5}] // ToMatlab
(* [5,0,5,3,4;
    5,5,3,0,2;
    1,4,4,4,4;
    0,3,2,5,5;
    4,5,5,1,1]; *)

However, it won't convert general definitions or things that don't make sense in MATLAB, such as patterns.

To install the package, extract the ToMatlab.m file to 

FileNameJoin[{$UserBaseDirectory, "Applications"}]
|improve this answer
$\endgroup$
  • $\begingroup$ Great! Thank you very much!! $\endgroup$ – Seyhmus Güngören Nov 3 '12 at 0:09
  • $\begingroup$ sorry but how can I use this package? $\endgroup$ – Seyhmus Güngören Nov 3 '12 at 0:28
  • $\begingroup$ You extract the ToMatlab.m file to $UserBaseDirectory/Applications/ $\endgroup$ – rm -rf♦ Nov 3 '12 at 0:41
  • 1
    $\begingroup$ @TMH When you download the ToMatlab package from the linked site, you get a zip file. Unzip that file and copy the ToMatlab.m file to the location I mentioned. Replace $UserBaseDirectory with whatever is shown when you evaluate that in Mathematica. $\endgroup$ – rm -rf♦ Mar 30 '13 at 18:25
  • 1
    $\begingroup$ Can you in simple steps numerate what we should do and where? Like: 1. Write this code in mathematica! 2. Write this code in Terminal (mac) or similar. 3. Copy this file to that folder!. What do you mean with extracting something to something? I downloaded ToMatlab.m file, what does it mean to extract it? What software to use when extracting it? Thanks for your patience. $\endgroup$ – Your Majesty Jun 8 '15 at 15:22

protected by rm -rf♦ Feb 5 '15 at 11:19

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.