Depending on what you want, one of these will work:
A=[ 1 2 3 ; 4 5 6; 7 8 9];
B=1:3;
figure(1)
plot(B, A)
grid
figure(2)
surf(A)
set(gca, 'XTick',B)
grid on
If you want a 2D version of the surf plot, add:
view(0, 90)
after it.
Experiment to get the result you want.
