Let a(j) be the number of vehicles arriving between hour j-1 and hour j (j=1,...,24). So a is a row vector with 24 element.
Then do the following:
b(1)=0;
b(2:25)=cumsum(a(1:24));
b=b/b(25);
r=rand(1,10000);
random=interp1(b,linspace(0,24,25),r);
"random" gives you 10000 arrival times which lie between 0 and 24. If random(i) lies between integers j-1 and j (1<=j<=24)) means that the car arrives between hour j-1 and hour j.
Best wishes
Torsten.
