Avoiding loops for functions with arrays

Hi

I have to use the following code snippet in a program:

M = [2 4 6 8];
Data = randint(1,10,M);

This gives an error saying "The IRANGE parameter should contain no more than two elements."

One way to solve this is to use a loop for each element of M. How do I avoid using a loop here and calculate Data(i) for each M(i)?

Answer 1

[Geoff]

Do you want a 1x10 matrix containing random values from M? There are a number of ways to do this.

Using randint, you need to check the documentation. Like the error says, the third parameter requires a 1x2 vector [low,high]. Since your vector M happens to have a pattern, you could use:

Data = randint(1, 10, [1 4]) * 2;

But this isn't very nice because it makes assumptions about M.

Why don't you instead use randint to generate a 1x10 matrix of random indices into M?