Replacing text with value

I have a matrix of A1= [ A B C D E F G H I J K L M N O] and another matrix of value but its quite long so let's say it's A2= [ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]. If I have a result of r=[ A E] or r=[ B D L], how do i replace the the letters with its corresponding value?

Answer 1

[Voss]

A1 = 'A':'O'

A1 = 'ABCDEFGHIJKLMNO'

A2 = 1:15

A2 = 1×15

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

r = 'AE';

[~,idx] = ismember(r,A1);
s = A2(idx)

s = 1×2

1 5

[Desmond Chang]

Thanks a lot!!!!

[Voss]

You're welcome!