Nyquist plot - Changing the graph axes

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Shahar ben ezra
Shahar ben ezra 2020-10-15
评论： Shahar ben ezra 2020-10-24
Hello everyone
According to the following code why I see the graph like this:
and not like this :
my code
The most basic there is :
sys1 = tf([1 1 ],[1 -1 0])
nyquist(sys1),grid on

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回答（1 个）

Chaitanya Mallela
Chaitanya Mallela 2020-10-22
From the basic graph, you can observe that the axis points are different for real and imaginary. Try setting the equal axis and adjust the graph on the figure window.
sys1 = tf([1 1],[1 -1 0])
nyquist(sys1)
axis equal
grid on

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