Nyquist plot - Changing the graph axes

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

Answer 1

[Chaitanya Mallela]

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

[Shahar ben ezra]

thanks

This is good, but not enough

Thanks again