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rlocus and zp2sys


From: Shaun Jackman
Subject: rlocus and zp2sys
Date: Wed, 19 Nov 2003 01:11:26 -0600
User-agent: KMail/1.5.3

I've upgraded to rlocus, and am trying to use it with zp2sys now. I've 
run into the following error.

Also, someone pointed out that rlocus doesn't work for single pole 
systems. For completeness' sake, could this be added?

Thanks,
Shaun


octave         2.1.50-3
GNU Octave, version 2.1.50 (i386-pc-linux-gnu).

G_z = [];
G_p = -2*pi * [1e3 10e3 10e3];
G_k = 1000;
G = zp2sys( G_z, G_p, G_k);
rlocus( G)

num = 1000
den =

   1.0000e+00   1.3195e+05   4.7374e+09   2.4805e+13

error: number of columns must match (2 != 1)
error: evaluating assignment expression near line 97, column 7
error: evaluating if command near line 71, column 3
error: called from `sysgroup' in file 
`/usr/share/octave/2.1.50/m/control/system/sysgroup.m'
error: evaluating assignment expression near line 96, column 9
error: evaluating if command near line 65, column 3
error: called from `sysmult' in file 
`/usr/share/octave/2.1.50/m/control/system/sysmult.m'
error: evaluating assignment expression near line 146, column 11
error: evaluating while command near line 95, column 3
error: called from `zp2ss' in file 
`/usr/share/octave/2.1.50/m/control/system/zp2ss.m'
error: evaluating if command near line 109, column 5
error: evaluating if command near line 107, column 3
error: called from `sysupdate' in file 
`/usr/share/octave/2.1.50/m/control/system/sysupdate.m'
error: evaluating assignment expression near line 153, column 9
error: evaluating if command near line 152, column 3
error: called from `sysgetsignals' in file 
`/usr/share/octave/2.1.50/m/control/system/sysgetsignals.m'
error: evaluating if command near line 182, column 3
error: called from `rlocus' in file 
`/usr/share/octave/2.1.50/m/control/base/rlocus.m'



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