how to read a matrix from a text file in matlab

Question

I have a text file which has 500 columns and 500 rows, of numerical(integer) values . Every element in the row is separated by a tab. I want to rea

Answer 1

% Pre-allocate matrix
Nrow=500; Ncol=500;
a = zeros(Nrow,Ncol);
% Read file
fid = fopen('yourfile.txt','r');
for i:1:Nrow
   a(i,:) = cell2mat(textscan(fid,repmat('%d ',Ncol));
end
fclose(fid); 
% Trasnspose matrix
a_trans = a.';