MATLAB: How to get MATLAB to select a random variable from a set of variables

generatorrandomvariable

I'm trying to write a program that generates a random combination based on variables. For example, the first set has variables A through D and a second set has variables E through H. I want to generate combinations from both sets like AE, DH, CF, etc.

Best Answer

I don't know what AE etc. means. Do you mean to concatenate them, like [A, E]? If so try this:
% Assign 4 variables.

a=1;
b=2;
c=3;
d=4;
r1 = randi(4)
% Select one of them at random.

switch r1
  case 1
    out1 = a
  case 2
    out1 = b
  case 3
    out1 = c
  otherwise
    out1 = d
end
% Assign 4 variables.
e=11;
f=12;
g=13;
h=14;
% Select one of them at random.
r2 = randi(4)
switch r2
  case 1
    out2 = e
  case 2
    out2 = f
  case 3
    out2 = g
  otherwise
    out2 = h;
end
% Now make the concatenation
out = [out1, out2]
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