problems with rlocus

[Eduardo J. Adam]

Dear friends,
I have a problem with rlocus function. Here you have a simple example

--------------------------------------
clear all
n=[1 1]; d=[1 1 1];
gs=tf(n,d); sysout(gs)

increment=0.1; min_k=0; max_k=2;
------------------------------------------

Then, 
1. the following command works for me
rlocus(gs) 

2.  the following command doesn't work for me
[rldata,k]=rlocus(gs[, increment, min_k, max_k]);
(please, read the help)

3. the following command doesn't work for me
[rldata,k]=rlocus(gs,[ increment, min_k, max_k]);

4. the following command works not well for me
[rldata,k]=rlocus(gs,[ increment; min_k; max_k]);

because it is equal to,
[rldata,k]=rlocus(gs);

If rlocus worked well, rldata should be a matrix whose size must be 2x21 and the response is a matrix 2x328.

I think there is a documentation problem, but I'm not sure.

Eduardo
-- 

Dr. Eduardo J. Adam
Prof. Adjunto Instrumentación y Control de Procesos
Facultad de Ingeniería Química
Santiago del Estero 2654, (S3000AOJ), Santa Fe, SF, Argentina
Tel. +54 (0342) 457-1167 Int. 2742