'Subscripted assignment dimension mismatch" error..can anyone help?

I am writing a program to access elements in the cell and put them in mtrix and i m getting above error..my code is as follows..I have (1*1) cell with column matrix with k rows in it..

i want to access elements in column matrix in following sequence (11,12,13,15,16,17,19,20,21...)

function [ coordinates ] = readSTL1( filename,k)
% reads ASCII STL file and gives coordinates of vertices.
%filename-name of file(test.txt),k- number of rows in column matrix.
fid=fopen(filename);
C=textscan(fid,'%s');
%reads file and generates cell.
m = 1;
i = 1;
while(m < (k-3))
% m is row number of column matrix     
   l = 1;
           while(l<4)
            P(i,1) = C{1,1}{m,1}; % see help for accessing cell arrays
              l = l+1;  % makes sure loop runs thrice.
              m = m+1;  % access corresponding row from cell'C'.
              i = i+1;  % row number in output matrix.
           end 
     m = m+1;
  end
end

[Jan]

Please post the complete error message, most of all the detail in which line the error occurres. This would be much more efficient than letting us guess this detail.

Answer 1

[Walter Roberson]

You are trying to store an entire string (which is a vector of characters) into the single scalar location P(i,l)

What datatype are you expecting P to come out as? If you are expecting it to come out as a cell array of strings, then assign to P{i,1}

[siddhesh rane]

Thank you..i converted numerical strings in the cell into doubles..it worked.