MATLAB: Labelling matrix dynamically regardless of its size

column namelabel;matrixrow name

Hello,
I want to label an n-by-m matrix dynamically using horzcat. I'm using the following code:
X=[];
for i=1:size(tableau,1)
    X=[X strcat('x', num2str(i))];
end
Y=[];
for j=1:size(tableau,2)
    Y=[Y strcat('y', num2str(j))];
end
t=horzcat({''; strcat('', X) ;'M'}, ...
        vertcat({ strcat('', Y),'N'},...
                num2cell(tableau)));
However I'm getting an error "??? Error using ==> vertcat CAT arguments dimensions are not consistent."
The objective is to obtain the following output regardless of the matrix size:
'' 'y1' 'y2' 'y3'
'x1' 5   5     3
'x3' 3   1     3
'x3'  7  6     4
Thanks for your help.

Best Answer

>> M = [5,5,3;3,1,3;7,6,4];
>> C = num2cell(M);
>> C(2:end+1,2:end+1) = C;
>> C{1,1} = '';
>> C(2:end,1) = strcat('x',cellstr(num2str((1:size(M,1)).')));
>> C(1,2:end) = strcat('y',cellstr(num2str((1:size(M,2)).')));
>> C
C = 
    ''      'y1'    'y2'    'y3'
    'x1'    [ 5]    [ 5]    [ 3]
    'x2'    [ 3]    [ 1]    [ 3]
    'x3'    [ 7]    [ 6]    [ 4]
Or for a much better solution, use the new table variable class, which includes row and column names:
http://www.mathworks.com/help/matlab/tables.html
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