Testing for a string in a cell array in a structure

I want to find the matches to a string in a cell array of strings which is part of a structure.

Strcmp works when I give it the cell array, but not when I use the structure.

>> CellArray = { 'one' 'two' 'three' 'one' };

>> S = struct( 'CA', CellArray );

>> strcmp( CellArray, 'one' )

ans =

1×4 logical array

1 0 0 1

>> strcmp( S.CA, 'one' )

Error using strcmp

Too many input arguments.

>>

What am I doing wrong?

I don't have to use a structure - I just use it as a way of returing lots of variables from a function.

Answer 1

[Voss]

Enclose cell array arguments in the call to struct() with {} to make them scalar cell arrays, because struct() will create an array of structs for cell array inputs, one per element of the cell array given.

CellArray = { 'one' 'two' 'three' 'one' };
S = struct( 'CA', CellArray ) % 1-by-4 struct array

S = 1×4 struct array with fields:
    CA

S = struct( 'CA', {CellArray} ) % scalar struct

S = struct with fields:
    CA: {'one'  'two'  'three'  'one'}

strcmp( CellArray, 'one' )

ans = 1×4 logical array
   1   0   0   1

strcmp( S.CA, 'one' )

ans = 1×4 logical array
   1   0   0   1

[dormant]

Many thanks. Cell arrays are my Kryptonite!

[Voss]

You're welcome! If it's working now, do you mind marking the answer as 'Accepted'? I appreciate it!

Honestly, the behavior of struct() you ran into here - where passing a cell array to the struct() function creates an array of structs rather than a scalar struct with a cell array field - is one thing that bugs me about MATLAB (and there aren't very many things that bug me about MATLAB).