if you have an array like this:
a=
1 2 3 4 5
2 4 6 8 10
1 3 5 7 9
where each row represents a variable, you could do it like this:
clc
clear all
close all
a=[1 2 3 4 5; 2 4 6 8 10; 1 3 5 7 9];
s=size(a);
for iplot=1:s(1)
hold on
subplot(1,s(1),iplot)
plot(2*a(iplot,:).^2)
end
which gives you:
