Matrix with numeric values

I have assigned letters A through Z a numeric value of 1 through 26, respectively. I have been able to form a 26x19 matrix with these random numeric values. However, I do not know how to convert the entire matrix back to character form.

For example, if part of my matrix is [1 2 3 4], I want it to be [A B C D]. (Note: as said above, I have assigned variable A to equal 1, variable B to equal 2, etc.)

[Stephen]

"I have assigned letters A through Z a numeric value of 1 through 26..."

Sounds like a complex approach.

A much simpler use of MATLAB ("MATrix LABoratory") would be to use vectors/matrices to store your data.

Answer 1

[Birdman]

N=4
A=1:N;
B=char(64+A)

'ABCD'

B(1)

'A'

B(2)

'B'
.
.

and so on. Change N and observe the results.

[Nathan McFall]

Thank you! Just curious, but why do you have to say char(64 + A), rather than just doing char(A)?

[Birdman]

Because char makes conversions based on ASCII table.

[Stephen]

"why do you have to say char(64 + A), rather than just doing char(A)?"

The character code for 'A' is 65:

https://en.wikipedia.org/wiki/ASCII#Printable_characters

MATLAB supports unicode characters up to 65535:

https://www.mathworks.com/help/matlab/ref/char.html