Selecting one array out of three.

I have three arrays, including A=[1 2 3 4 5 6 7 8 9 0 3 4 5 6]; B=[4 5 6 7 8 6 7 8 9 1 3 4 5 0]; C=[5 6 7 8 9 0 0 9 5 5 5 5 6 7]; Now I need to store one array in D i.e., D= any of one from three. Kindly help me out.

Answer 1

[Jan]

Or:

A = [1 2 3 4 5 6 7 8 9 0 3 4 5 6];
B = [4 5 6 7 8 6 7 8 9 1 3 4 5 0];
C = [5 6 7 8 9 0 0 9 5 5 5 5 6 7];

Pool = {A, B, C};
D    = Pool{randi([1, numel(Pool)])}

This is flexible compared to the swicth method: The Pool can have different sized without the need to adjust the code.

[shane watson]

Thank you, dear Jan Simon it Works nicely.

Answer 2

[Adam]

n = randi( 3 )

switch ( n )
   case 1
      D = A;
   case 2
      D = B;
   case 3
      D = C;
end

If your 3 arrays where all in a single named variable as e.g. columns of a 2d array it would be neater, but not so much with named arrays.

[shane watson]

Thank you, Adam, for your time. As it increases code length, but applicable in my work.

Answer 3

[John BG]

Hi Shane

this is John BG ( <mailto:[e-mail] [e-mail]> )

the best way to randomly choose one of those vectors with variable length is to put them in a cell

A=[1 2 3 4 5 6 7 8 9 0 3 4 5 6];
B=[4 5 6 7 8 9 1 3 4 5 0];
C=[5 6 7 8 9 0 0 9 5 5 5 5 6 7];

D=randi([1 numel(A2)],1,1)

if you find this answer useful would you please be so kind to consider marking my answer as Accepted Answer?

To any other reader, if you find this answer useful please consider clicking on the thumbs-up vote link

thanks in advance

John BG

<mailto:[e-mail] [e-mail]>

[shane watson]

Hi BG it gives an error since A2 is undefined for me??