Hi,
I am using fzero to emulate the "events" options when solving a ODE system.
The function in the 3.2.2 of octave had no problems working with this code
IC = <inital conditions>
dynsys=@(x,t) xprime(x,t);
func=@(T) lsode(dynsys,IC,T);
t=fzero(@(x)event(x,func,1e-2),0)
where event is
function d=event(x,func,tol)
T=linspace(0,x,1000);
sol=func(T);
d=abs(sol(end))-tol;
(Is there a better way of doing this?) Anyway, I changed to the fzero
that comes with optim-1.0.6 and modify a line in my code to
t=fzero(@(x)event(x,func,1e-2),[0 60])
and now I get this error
LSODE-- REPEATED CALLS WITH ISTATE = 1 AND TOUT = T (=R1)
In above message, R1 = 0.0000000000000E+00
LSODE-- RUN ABORTED.. APPARENT INFINITE LOOP
error: exception encountered in Fortran subroutine dlsode_
Can I use the new fzero in this way or not?
Thanks
--
JuanPi
"Research begins with the unknown and ends with the unknowable."
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