I am using pzmap where poles and zeros are ploted but my question how can i see poles on unit circle only not zeros?
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Muhammad
el 22 de Oct. de 2018
Comentada: Muhammad
el 23 de Oct. de 2018
I am using frequency response analysis and i want to plot the poles of the transfer function on unit circle without ploting zeros. Can anyone help me how can i do that?
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Erivelton Gualter
el 22 de Oct. de 2018
You can extract the pole and zeros and construct your model again using zpk for example.
Check the following example:
s = tf('s');
G = (s+0.5)/(s^2+s-0.5);
[P, Z] = pzmap(G);
G_without_zeros = zpk(P,[],1);
subplot(211); zplane(Z,P); title('Ploting Poles and Zeros on Unit Circle');
subplot(212); zplane(Z,[]); title('Ploting only Zeros on Unit Circle');
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Walter Roberson
el 22 de Oct. de 2018
In R2014b and later, if you "hold on" then the xlim and ylim should be preserved. In R2014a and earlier, you needed to "hold all" to have the limits preserved.
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