Attempting to plot a 3 x 3 grid of plots

I am trying to plot the varying responses for a PID controller.

I have 3 values for K_p

I have 3 values for K_d

The function is already built in and pulls the K-values.

I need to create 9 subplots in a grid, but I'm terrible with for loops.

Should I create a vector for each?

Like this

Kp = [2.4 180 250];

Kd = [0 6.5 25];

What should the for loop be like?

for i = 1:length(Kp)

for j = 1:length(Kd)

plot([i:j]);

plot(time, response, 'k', 'LineWidth', 2)

end

end

All advice is appreciated, and forgive my lack of understanding. Thank You!

Answer 1

[Star Strider]

Try something like this:

time = linspace(0,2*pi);
response = @(Kp,Kd) sin(time*Kp) .* cos(time*Kd);

Kp = [2.4 180 250];
Kd = [0 6.5 25];
k = 0;
for i = 1:length(Kp)
    for j = 1:length(Kd)
        k = k+1;
        subplot(3,3,k)
        plot(time, response(Kp(i),Kd(j)), 'k', 'LineWidth', 2)
        title(sprintf('Kp = %3.1f, Kd = %2.1f',Kp(i),Kd(j)))
    end
end

Adapt that to plot what you want to plot. Make appropriate changes to get the result you want.

[William Kistler]

Your code runs elegantly on its own. Thank you for your help.

Unfortunately, due to the nature of the code we were given as part of the assignment, it isn't compatible.

I have attached the code to this message on the off chance that someone wants to give it a shot

[Star Strider]

I have no idea what you’re referring to. I don’t see anything similar in the .m file.

I’ll delete my Answer in a few hours.