Re: Re: matlab and octave

[goberr]

A geeker (and possibly slightly faster) way would be:

> ---- ismatlab.m
 function out = ismatlab()
 %% Return 1 if you are in matlab and 0 if you are in octave
 %% This uses the very long output of command version under matlab
 %% This is not very clean but it is quickly checked
 
   out = (length(version) > 10)
 
 end


> 
> From: Laurent Jacques <address@hidden>
> Date: 2003/11/18 Tue AM 07:43:07 EST
> To: "A. S. Budden" <address@hidden>
> CC: address@hidden
> Subject: Re: matlab and octave
> 
> Try something with the help of the following function which works under 
> octave 
> and matlab.
> 
> Laurent.
> 
> ---- ismatlab.m
> function out = ismatlab()
> %% Return 1 if you are in matlab and 0 if you are in octave
> %% This uses the very long output of command version under matlab
> %% This is not very clean but it is quickly checked
> info=version;
> if (length(version) > 10)
>   out = 1;
> else
>   out = 0;
> end
> ----
> 
> And a simple test which works too under matlab and octave:
> 
> ---- test.m
> function test()
> 
> if (ismatlab)
>  plot(1:5);
> else
>  plot(1:5);
>  replot;
> end
> ----
> 
> 
> On Tuesday 18 November 2003 13:17, A. S. Budden wrote:
> | Hi there,
> |
> | I use both octave and matlab a lot -- octave on my laptop and matlab on
> | the university machines.  Is there any way of adding lines into a .m
> | file such that either matlab or octave (mainly the former) will ignore
> | the command.  For example, I have a file with the line replot --
> | this seems to be required in octave to update the gnuplot window.
> | However, matlab generates an error message if I run it there.  I realise
> | I could make a function called replot that does nothing in matlab and
> | put it in a central store, but this could get messy if there are a lot
> | of functions that are required.
> |
> | Also, I've found that the axis command doesn't seem to work very well in
> | octave.  In my .m file I have a function plot_ab (at the end of this
> | email).  The line ax=axis returns [-1.8131 1.3346 -0.9580 1.5246] in
> | matlab and the plot virtually fills the window.  In octave, ax=axis
> | returns [-10 10 -10 10] and the plot is only about 1/10 the size of the
> | window.
> |
> | Can anyone offer any suggestions with either of these problems?
> |
> | Many thanks in advance,
> |
> | Al
> |
> |
> | function plot_ab(parametera, parameterb);
> | % Plot first parameter against second parameter with fixed axis
> | % for i=1:size(parametera,1)
> |
> | for i=1:size(parametera,1),
> |     plot(parametera(i,:), parameterb(i,:), 'b-', 0,0,'bx');
> |     if ( i==1 )
> |             axis('equal');
> |             replot;
> |             % Add 50% on to each axis and remember
> |             ax = axis;
> |             if (abs(ax(1)) > abs(ax(2)))
> |                     ax(2) = -ax(1);
> |             else
> |                     ax(1) = -ax(2);
> |             end;
> |             if (abs(ax(3)) > abs(ax(4)))
> |                     ax(4) = -ax(3);
> |             else
> |                     ax(3) = -ax(4);
> |             end;
> |             ax = ax*1.2;
> |             axis(ax)
> |             axis('equal');
> |             replot;
> |             ax = axis;
> |     end;
> |     axis(ax);
> |     xlabel('\alpha Axis Current');
> |     ylabel('\beta Axis Current');
> |     pause(0.1);
> | end;
> |
> |
> |
> | -------------------------------------------------------------
> | Octave is freely available under the terms of the GNU GPL.
> |
> | Octave's home on the web:  http://www.octave.org
> | How to fund new projects:  http://www.octave.org/funding.html
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> | -------------------------------------------------------------
> 
> 
> 
> -------------------------------------------------------------
> Octave is freely available under the terms of the GNU GPL.
> 
> Octave's home on the web:  http://www.octave.org
> How to fund new projects:  http://www.octave.org/funding.html
> Subscription information:  http://www.octave.org/archive.html
> -------------------------------------------------------------
> 
> 



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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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