Question

A = [8 1 5; 1 4 2; 7 5 2];

Max = 5

B = randi(Max);

Right now I have a part of the code which generates a random number. I am looking to generate a random number from a list of numbers, in this case the numbers listed in the first row (8 1 5).

Instead of using randi is there another function that will generate randomly one of the numbers listed in first row and also meet the Max criteria?

Answer 1

From what you specified, I suggest the following:

A = [8 1 5; 1 4 2; 7 5 2];

% get a random number from row 1
index = randperm(length(A(1,:)));
number = A(1,index(1))

% get a randome number from row 1 that does not exceed Max
max = 5;
condition = find(A(1,:) <= max);
index = randperm(length(A(1,condition)));
number = A( 1, condition(index(1)))

Hope this gives some ideas,