From help-request at octave dot org Tue Jan 11 05:38:13 2005
Subject: Re: ODE system solving
From: Geraint Paul Bevan <g dot bevan at eng dot gla dot ac dot uk>
To: "homer_jay at katamail dot com" <homer_jay@katamail.com>
CC: help at octave dot org
Date: Tue, 11 Jan 2005 11:29:10 +0000

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homer_jay at katamail dot com wrote:
| i've tryed to write an m-file containing all the instructions for
solving my equations. this is the file:
|
| # dovrebbe calcolare la T(z) e w(z) per una bava di GR, processo Neumag
| y0=[57 0.186 520];
| z=linspace(0,1000,2000)';
| y=lsode(SysO,y0,z);
| plot(z,y(:,3)-273)
| # inizio della descrizione del sistema
| function SysO=f(y,z)
...
| endfunction
|
|
| it doesn't work!!! octave crush!!!
| what can i do?

Do you have all of that in a single file? SysO.m? If so, you should
separate the function definition from the script:

run.m:
y0=[57 0.186 520];
z=linspace(0,1000,2000)';
y=lsode(SysO,y0,z);
plot(z,y(:,3)-273)

SysO.m:
function ...
endfunction


- --
Geraint Bevan
http://www.mech.gla.ac.uk/~gbevan

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