How to plot a vector for fixed intervals

Hello, I have a vector of times for example [t1 t2 t3 t4]. I also have a vector of values A=[a1 a2 a3 ] .I need to plot between t1 and t2 the constant value a1, between t2 and t3 the value a2, between t4 and t3 the value a3. How can I do it?

Answer 1

[chicken vector]

Something like this?

t = [1 3 4 7];
a = [5 3 9 4];
stairs(t,a);
grid on;
xlim([0,10]);
ylim([0,10]);
xticks(1:10);