Reading multiple .dat files into MatLab -

i having great difficulties reading bunch of .dat files matlab. have tried google problem, after 1 hour still can't code work. in total have 141 .dat files. each file consist of 3 lines of header information (which not want include), , bunch of rows, each 3 columns of numbers. want merge rows .dat files 1 large matrix featuring rows, , 3 columns (since each row in .dat files contains 3 numbers). code have attempted use:

d = dir('c:\users\kristian\documents\matlab\polygoner1\'); out = []; n_files = numel(d); = 3:n_files     fid = fopen(d(i).name,'r');     data = textscan(fid,'%f%f%f','headerlines',3);     out = [out; data]; end 

however, when try run code error message

??? error using ==> textscan invalid file identifier.  use fopen generate valid file identifier.  error in ==> readpoly @ 6     data = textscan(fid,'%f%f%f','headerlines',3); 

if knows how can work, extremely grateful!

the problem when use fopen, not giving full path of file

path = 'c:\users\kristian\documents\matlab\polygoner1\' d = dir(path);  ....  %as @craigim advised it, otherwise can use strcat my_file = fullfile(path, {d.name})  = 3:n_files     fid = fopen(my_file{i},'r');      ....      fclose(fid); end