Wed 24 Oct 2012 02:24:34 AM UTC, original submission:
Hello
I'm trying to plot a root locus graph, but depending on what I do, I get a line that is not part of the root locus. This line appears only if I put more than one argument in the function rlocus, if I use only one argument graph is OK. See the script-file to reproduce this issue:
G = tf([1 1],[1 12 20 0 0])
rlocus (G)
print -dsvg right_rootlocus.svg
figure (2)
rlocus (G, 0.001, 0, 96)
print -dsvg wrong_rootlocus_increment_0.001.svg
figure (3)
rlocus (G, 0.1, 0, 96)
print -dsvg wrong_rootlocus_increment_0.1.svg
I'm using Gnu Octave 3.6.3, control toolbox 2.4.0 and gnuplot 4.6.1 on Ubuntu 12.04.
GNU Octave Version 3.6.3
GNU Octave License: GNU General Public License
Operating System: Linux 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012 x86_64
control *| 2.4.0 | /usr/share/octave/packages/control-2.4.0
gnuplot 4.6 patchlevel 1
Linux sergio2-Infoway 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
|