how do i change range automatically?

hi, how do i change range automatically in matlab? for example, i have a range from 0 to 100, and i want to draw some numbers from there. how do i determine i draw the first number from 0 to 10 and the next number, i want to draw from 1 to 15 without changing the range manually? can anyone help me?

[Roger Stafford]

What are the circumstances under which you do this "drawing"? Is it by taking a random selection over the given range? If this range is to change, what are the conditions in your program execution that are to cause such a change "automatically"? You need to describe such things to make your request for help meaningful.

[ker fang fang]

hi, sounds correct. but can i do it like, if at the first time it takes number from 0 to 10, then next round i want it to dont take 0 to 10 but from 11 to 20, how should i do that?

[Roger Stafford]

Maybe something like:

   for k = 0:1
     x = randi([11*k,10*(k+1)]);
     % Use x
   end

Answer 1

[Image Analyst]

From the help for rand:

In general, you can generate N random numbers in the interval [a,b] with the formula r = a + (b-a).*rand(N,1).

Now, you have to decide what a and b will be, like 0 and 10 or 1 and 15 or 0 and 100 or whatever. You have to specify those numbers in your code, like

a=1
b=15

Now I don't know if you consider that specification in your code to be manual or automatic. Perhaps you can define what those terms mean to you.