How to replace non zero value with character

Matrix A = [0 0 1; 1 0 0;0 2 0];

I want to create another matrix replacing non zeros elements (i.e. (1,3), (2,1), (3,2) with character string, e.g. OK

Please suggest....

Answer 1

[Stephen23]

>> A = [0 0 1; 1 0 0;0 2 0];
>> C = repmat({''},size(A));
>> C(A~=0) = {'OK'}
C = 
''    ''    'OK'
'OK'  ''    ''
''    'OK'  ''

[Andrei Bobrov]

C = cell(size(A));
C(A~=0) = {'OK'}

[Jan]

@Vishal Sharma: Do you see that Stephen has used a cell? You cannot mix numbers and characters directly in a double array.

Or:

Pool = {'', 'OK'};
C    = Pool((A~=0) + 1);