How to store strings in a matrix or table?

Hi, I have some strings, say, 'a1',...,'a12', and I want to store them in a 3 by 4 matrix A so that

A(1,1)='a1',..., A(1,4)='a4', A(2,1)='a5',..., A(2,4)='a8',..., A(3,1)='a9',..., A(3,12)='a12'. So that then I have a matrix A of my strings, and I can copy its content into my excel table (this is really what I want to do in the end).

However, as I try to assign string value to matrix, I recieve the following warning:

Unable to perform assignment because the indices on the left side are not compatible with the size of

the right side.

Any suggestions? Thanks in advance!

Answer 1

[Ameer Hamza]

If the end goal is to write these values in excel, the following will work (R2019a and later)

A = compose('a%d', reshape(1:12, 4, 3).');
writecell(A, 'file.xlsx')

However, in general, there is a difference in char array (single quotes) and string (double quotes) in MATLAB. So the correct syntax is

A(1,1) = "a1";
A(1,2) = "a2";
..

[Tmat]

Thank you very much! This solved my problem!