User`s guide

zpk
11-242
Example 3
Create a discrete- time ZPK model from a rational expression in the variable z,
by typing
z = zpk('z',0.1);
H = (z+.1)*(z+.2)/(z^2+.6*z+.09)
Zero/pole/gain:
(z+0.1) (z+0.2)
---------------
(z+0.3)^2
Sampling time: 0.1
Algorithm zpk uses the MATLAB function roots to convert transfer functions and the
functions
zero and pole to convert state-space models.
See Also frd Convert to frequency response data models
get Get properties of LTI models
set Set properties of LTI models
ss Convert to state-space models
tf Convert to TF transfer function models
zpkdata Retrieve zero-pole-gain data