Plotting root locus for z-domain transfer function in Matlab

[Ethers0n]

I'm trying to prooduce a plot of a root locus for an open loop transfer function.
The transfer function is in the z-domain, with a gain K. I've already solved for the charectoristic equation of the system by hand.

But, how do I use Matlab to plot the root locus of a transfer function in the Z - Domain? I've seen examples in the Laplace (s) Domain...do these work the same way? (as in...i won't need to do anything differently?)

thank you.

 

[SGT]

When describing your system in Matlab you must inform the sampling time. Matlab will automatically know that you are using a discrete variable. The command rlocus will draw your root locus for your z variable.