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Re:Distinguishing Octave from Matlab


From: Pablo
Subject: Re:Distinguishing Octave from Matlab
Date: Thu, 19 Feb 2009 13:57:14 -0300

Sorry to bump in, but I was looking for a way to distinguish octave
from matlab, and I found this thread, with the solution provided by
Ben Abbott:

> Distinguishing between Matlab and Octave may be done as,
>
>       v = ver;
>       if (strcmpi(v(1).Name,'matlab')
>         % Matlab code here
>       elseif (strcmpi(v(1).Name,'octave')
>         % Octave code here
>       end
>
> Ben

 However, when I tried it in matlab, I got unexpected results:

>> v=ver;
>> v(1).Name
ans = Aerospace Blockset
>> help ver
 VER MATLAB, Simulink and toolbox version information.
    VER displays the current MATLAB, Simulink and toolbox version information.
    VER(TOOLBOX_DIR) displays the current version information for the
    toolbox specified by the string TOOLBOX_DIR.


As stated in the help, the command ver gives a long list of version
numbers (one for each toolbox), so it takes a lot of time, several
seconds on my PC. Moreover, the 'matlab' toolbox is not first in that
list. David Bateman suggested the following:

>> v=ver('matlab')
v =
       Name: 'MATLAB'
    Version: '7.0.4'
    Release: '(R14SP2)'
       Date: '21-Jan-2005'

>> v=ver('octave')
v =
0x0 struct array with fields:
    Name
    Version
    Release
    Date

That's way faster, and worked fine. I just suscribed to the list to
second his suggestion, in case it wasn't clear that it works better.
So the code should be something like (I haven't tested it in octave)

v1 = ver('matlab');
v2 = ver('octave');
if (strcmpi(v1.Name,'matlab'))
        % Matlab code here
elseif (strcmpi(v2.Name,'octave'))
        % Octave code here
end


Arnoques


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