Change the output Y-labels in a figure of a multi-output dynamic system

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thomas michiels
thomas michiels on 15 Dec 2018
Commented: maffew on 29 Feb 2020
Vraag 3a versie 1.jpg
I don't know how I can change the names of the Y-labels out(1), out(2), out(3) and out(4) in this multiplot figure...
  1 Comment
maffew
maffew on 29 Feb 2020
You could either throw these into multiple plots with step(sys(1))
OR
You could use subplots. For example,
figure
subplot(2,1,1)
step(sys(1))
ylabel('Output 1')
subplot(2,1,2)
step(sys(2))
ylabel('Output 2')
Unfortunately, you lose the larger label. There's a number of options for that. Looks like someone made a thing, https://www.mathworks.com/matlabcentral/fileexchange/7772-suplabel

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Answers (1)

madhan ravi
madhan ravi on 15 Dec 2018
Edited: madhan ravi on 15 Dec 2018
ylabel(...) after each subplot
  1 Comment
thomas michiels
thomas michiels on 15 Dec 2018
That is what I would normally do, but I came to this figure as the 4-way output of a dynamic system with the following code:
f=1200;
A=[0 1 0 0;-k/m1 -(b+c)/m1 k/m1 c/m1;0 0 0 1;k/m2 c/m2 -k/m2 -c/m2];
B=[0;f/m1;0;0];
C=[1 0 0 0;0 1 0 0;0 0 1 0;0 0 0 1];
D=[0;0;0;0];
sys=ss(A,B,C,D);
figure(1)
t1=0:1:900;
step(sys,t1);
[y,t1]=step(sys,t1);
So the subplots are not defined in my previous code.

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