plotting the correct position of maximum

Hello

can you correct my code to find the right position of the max in the plot as you can see in the figure it's shifted to the right

clear;clc;
num = [0.1 0.35 0];
den = [1 3 2];
sys = tf(num,den)
figure();
step(sys);
grid
title('Respond of sytem Subjected to initial Conditoin')
xlabel('t')
ylabel('Output x(t)')
hold on;
max1 = max(step(sys));
min1 = min(step(sys));
plot(max1,'o')
plot(min1,'o')

legend('y(x)', sprintf('Maximum y = %0.4f',max1),sprintf('Minumum y = %0.3f',min1))

Answer 1

[Ameer Hamza]

You also need to specify the time value in plot(). Try this

num = [0.1 0.35 0];
den = [1 3 2];
sys = tf(num,den);
figure();
step(sys);
[y, t] = step(sys);
grid
title('Respond of sytem Subjected to initial Conditoin')
xlabel('t')
ylabel('Output x(t)')
hold on;
[max1, idx1] = max(y);
[min1, idx2] = min(y);
plot(t(idx1), max1,'o')
plot(t(idx2), min1,'o')

legend('y(x)', sprintf('Maximum y = %0.4f',max1),sprintf('Minumum y = %0.3f',min1))

[Muhannad AL-hazmi]

why the max(y) and min with step?

[Ameer Hamza]

Both can be used with y. I have updated the answer.

[Muhannad AL-hazmi]

thank you

[Ameer Hamza]

I am glad to be of help!