Nyquist plot from 0 to Inf (only frequencies > 0)

Hello, I am trying to plot a Nyquist plot but only for pulsations > 0.I tried

nyquist(H, W)

Where H is my transfer function (continuous time) and W is the cell:

W  = {0, inf};

Yet somehow, my plot is still from -inf to +inf. How can I change that?

Answer 1

[M]

If you specify the frequency as

W = {WMIN,WMAX}

WMIN and WMAX are real frequencies satisfying 0<=WMIN<WMAX<=Inf.

So by setting

W  = {0, inf};

you're actually asking the default frequency, so you don't see any changes. Try to specify the frequency you want with:

W = linspace(-2*pi,2*pi,100);