Re: Example in manual doesn't work?

[Thomas Treichl]

Hermann Flaschka schrieb:
> Sorry, I meant to add that I am running OS X 10.4.10
> on a MacBookPro.
>
> Hermann

Hi Hermann,

I think that you've saved your file somewhere, where somewhere means it is not 
in your 'path'. Type 'pwd' in Octave and have a look where you currently are, 
type 'path' and have a look which paths are searched for *.m files, then 'cd' 
into the directory where your f.m is and run your example again. Or you can use 
the 'addpath' command to set up your path where f.m is placed. I can't see any 
problem running that example:

octave-2.9.13:2> function xdot=f(x,t)
> xdot=zeros(3,1);
> xdot(1)=77.27*(x(2)-x(1)*x(2)+x(1)-8.375e-06*x(1)^2);
> xdot(2)=(x(3)-x(1)*x(2)-x(2))/77.27;
> xdot(3)=0.161*(x(1)-x(3)); 
> endfunction
octave-2.9.13:3> t=linspace(0,500,1000);
octave-2.9.13:4> x0=[4;1.1;4];
octave-2.9.13:5> y=lsode("f",x0,t);
octave-2.9.13:6> plot (t,y)

  Thomas