how to add legend for each of my gains in nyuiqust plot ?

So I want to ask to make a nyquist olot for diffrent Gains (k) and also that it will be written for each of the nyquist plot what is the current k . how to do it ?

clc;clear all;close all;

% sys = zpk(Z,P,K)


K=[20 30 40 50 60 65]

for i=1:length(K)
sys_1 = zpk([],-1 ,K(i));
sys_2=zpk([],-2 ,1);
sys_3=zpk([],-3,1);
G=sys_1*sys_2*sys_3;
hold on;
figure(i);
nyquist(G);
 legend('Gain(K) is=' ,num2str(K(i)'))

end

Answer 1

[Ananya Tewari]

Hi Tomer ,

I understand you want different legend according to value of Gain(K)

Rather than using

legend('Gain(K) is=' ,num2str(K(i)')

You can use

value = ['Gain(K) is=', num2str(K(i))];
legend(value)