Thread Subject: Transfer function derivation

I have input discrete function u(t) and output discrete function y(t)
of a system having 500 points and now I want to make transfer function
for this.
How can I do this in matlab or other method.

asifk@email.com wrote in message <da87b39e-27d2-41c4-b0df-53f125b5cee2@n7g2000prc.googlegroups.com>...
> I have input discrete function u(t) and output discrete function y(t)
> of a system having 500 points and now I want to make transfer function
> for this.
> How can I do this in matlab or other method.

The problem is called system identification. There is a Toolbox:

http://www.mathworks.com/products/sysid