categorical.char
categorical: CM = char (C)
Convert categorical array to a 2-D character matrix.
CM = char (C) returns a character matrix CM,
which contains numel (C) rows and each row contains the
category name for the corresponding element of C(:).
Source Code: categorical
char converts the array to a character matrix of its labels, one row per element (shorter labels are padded with spaces, as for any char matrix).
C = categorical ({'small'; 'large'; 'small'})
C =
3x1 categorical array
small
large
small
char (C)
ans = small large small