Multiple x-axis for a single plot

I am a newbie matlab user.

So, I have

x1 = [183.75 189.748 195.745 201.743];
x2 = [0 1 2 3];
y  = [10 30 80 50 90 25 40 70];

I am trying to have a subplot where x1 is the principal x-axis and x2 is the secondary x-axis. The plot will have 2 curves such as below

plot(x1, y(1:4), x1, y(5:8))

I went through matlab forums but could not find any specific answer of my problem.

Answer 1

[dpb]

Maybe shoulda' searched the documentation first... :)

<Graph-with-multiple-x-axes-and-y-axes>

The other place to look for specialty stuff such as this is File Exchange --

<plotxx>