MATLAB Programming Fundamentals - MathWorks

A = [13 42; 7 20];

idx = ['a' 'b' 'c'];

indexIntoArray(A, idx)

Error using indexIntoArray (line 41)

Unable to index into array.

Caused by:

Error using indexIntoArray (line 25)

Indexing array is not numeric.

Indexing array is too large.

26 Error Handling