MATLAB: Undefined function ‘eq’ for input arguments of type ‘cell error

Question

txt1=[{'a'},{'b'},{'c'}];
txt1=txt1(:);
data=[{'a'},{'b'}];
data=data(:);
[row,col] = find(txt1==data)

%it gives

Undefined function 'eq' for input arguments of type 'cell'. error.

Answer 1

Replace

    txt1==data

by

    ismember( txt1, data )

and see documentation of ismember