MATLAB: Loop to extract set of rows for .txt file

Question

Hello,

I want to read attached "text.txt" file

here I want to skip first 5 line,

then I want to access set of 4 line in a loop, till end of file

Answer 1

hdr = {};
num = {};
[fid,msg] = fopen('text.txt','rt');
% Ignore first five lines:
for k = 1:5
    fgetl(fid);
end
% Read groups of four lines:
while ~feof(fid)
    str = fgetl(fid);
    if numel(str)>3
        hdr{end+1} = str;
        str = [fgets(fid),fgets(fid),fgets(fid)];
        num{end+1} = sscanf(str,'%f');
    end
end
fclose(fid);

For example, the first group of four lines:

>> hdr{1}
ans = alphanso1         Mumbai          s1   50.000  150.000  500.000    1
>> num{1}
ans =
   2.5694e+000
  -8.5974e-005
   4.1948e-008
  -1.0018e-011
   1.2283e-015
   2.0000e+000
   2.9218e+004
   4.7843e+000
   3.1683e+000
  -3.2793e-003
   6.6431e-006
   3.0000e+000
  -6.1281e-009
   2.1127e-012
   2.9122e+004
   2.0519e+000
   4.0000e+000