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From: Susan on 8 Apr 2010 16:30
I want to plot the zeta line and Wn semicircle that indicates the values I've specifed below, but what I get with these commands is the same thing I get with just "sgrid" command. The plot is too busy with all these lines.

I searched for examples which show the commands below only produce 2 lines and 1 semicircle at .7 and 1.8 not the entire grid.

Does anyone know how to get just 2 lines and 1 semicircle for the specified zeta and Wn?


zeta=0.7;
Wn=1.8;
sgrid(zeta, Wn)
From: Susan on 8 Apr 2010 16:50
Nevermind, I figured it out. It's all in the order. The rlocus(sys) must be before sgrid(zeta, Wn) command
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