Is it possible to link an str answer with an existing variable?

I have 26 variables (one for each letter) which each contain a different matrix. After this I have a for loop that gives an output of a single letter. I want to link the variables and for loop in some way, so that if the loop gives off the letter 'a' it will output the matrix linked to the variable a instead of just the letter. Is this possible? And if it is how would it be accomplished?

Answer 1

[Image Analyst]

Use a switch statement or a multiple if statement, e.g.

switch letter
case 'a'
    theMatrix = a;
case 'b'
    theMatrix = b;
etc.

Now theMatrix will be one of those 26 other matrices according to what letter is in the 'letter' variable.

Answer 2

[Steven Lord]

Use a struct array and dynamic field names or getfield.

S = struct('a', [1 2 3], 'b', [4 5 6], 'c', [7 8 9]);
f = 'b';

x = S.(f) % will contain [4 5 6]

y = getfield(S, f) % will also contain [4 5 6]