multiple plots on a subplot

I just want something generic so I can have two subplots and two graphs on each subplot. I know how to do the two subplots but having two different graphs on each subplot is the problem. Thanks

Answer 1

[Azzi Abdelmalek]

Use hold on

t=0:0.1:10;
y1=sin(t)
y2=cos(t)
subplot(2,1,1)
plot(t,y1)
hold on
plot(t,y2,'r')

Answer 2

[Walter Roberson]

Should the two graphs be in the same visual axes? If so then "hold on" or "plotyy".

If not, if you are wanting to subdivide a subplot into further subplots, then you can use subplot for that with a bit of creativity.

Example: suppose you are subplotting 3 (down) x 5 (across), and you want the last in the middle row to be subdivided. That is 15 subplots, which MATLAB numbers row first -- so

1   2  3  4  5
6   7  8  9 10
11 12 13 14 15

Thus normally that subplot would be reached by subplot(3, 5, 10) -- a 3 x 5 matrix and pick element #10 out of that.

Now to subdivide that element into left and right halves, you need to imagine that the matrix was twice (two halves) as fine horizontally -- that it was 3 x 10 -- and then you figure out the element numbers that correspond to the two halves. A small calculation shows that the element numbers would be #19 and #20 of that finer grained matrix.

The step after that is to subplot() with those parameters:

subplot(3, 10, 19)   or subplot(3, 10, 20)

and you would be addressing the left and right halves of the 3 x 5 element.

It is completely valid to subplot() with different granularities, as long as not of the axes that you subplot() into existence overlap any other one.