matlab cell array store different size element

1. Cell array can stores different length of feature in various sample. Which is no possible using matrix.


myCell = cell(5,1);
myCell{1} = nonzeroPos;  % first row
myCell{2} = [ 3 4 5];        % second row

2. Store / write cell array into file


C = cell(noSample,1);
fid=fopen(fNameFreq,'wt');
for i=1: (noSample - noSample +2 )
   nonzeroPos = find(data(i , :) );  
   C{i} = nonzeroPos; 
   fprintf(fid,'%i\t',C{i});
   fprintf(fid,'\n','' );   
end
fclose(fid);