Subplots made by multiple plots

Hi,

I would like to draw a figure consisting of 3 subplots, each made by 4 plots.

Here's my code, to make it more clear...

hold all;
for i=1:4

      subplot(1,3,1);
      plot(S1(:,1,i), S1(:,2,i), c(i));
      xlim([0 1]);

      subplot(1,3,2);
      plot(S2(:,1,i), S2(:,2,i), c(i));
      xlim([0 1]);

      subplot(1,3,3);
      plot(S3(:,1,i), S3(:,2,i), c(i));
      xlim([0 1]);

end
hold off;

My problem is that only the last plots are drawn in the subplots. So I see only one line per subplot, instead of the 4 I intended. Can anyone help me fix this?

Thanks!

Answer 1

[Sean de Wolski]

Each subplot needs to be held individually.

figure;  hold on

subplot(121)
hold on
plot(1:3)
plot(rand(1,3))
subplot(122)
hold on
plot(4:6)
plot(rand(1,3))

Answer 2

[Demetrio Rodriguez Tereshkin]

Or just use hold on after subplot.

% some values
x(1,:) = 1:10;
x(2,:) = x(1,:)-1;
y = x.^2;

% subplots in a loop replace each other
fig1 = figure('Name', 'subplots_replacement'); 
for i = 1:2

      subplot(1, 2, 1)
      plot(x(i,:))

      subplot(1, 2, 2)
      plot(y(i,:))

end

% subplots in a loop overlap 
fig2 = figure('Name', 'subplots_add'); 
for i = 1:2

      subplot(1, 2, 1)
      hold on % this helps
      plot(x(i,:))

      subplot(1, 2, 2)
      hold on % this helps
      plot(y(i,:))

end