How to set the y-axis values to be only integers?

Hi everybody,

If I have the following vector

x = [1 1 1 1 1 2 2 2 2 1 1 1 1 2 2 2 2 2 2 3 3 3 3];

and I want to create a plot on which the y-axis will contain integers between 0 and 4 (including 0 and 4), without showing any numbers in between, such as 2.8 or 1.2 for example. Hence, plot(x) doesn't work on that case. Could someone help on this please? Thanks in advance.

Answer 1

[Thorsten]

plot(x)
a = axis;
axis([a(1) a(2) 0 4]);
set(gca, 'YTick', 0:4)