Merging specific rows from multiple text files.

I have time series data for a day, split into roughly 5 minute segments each of which is in a separate txt file, each with several rows of headers and information above the data.

Hence I want to merge all 198 txt files to one txt file with only the continuous timeseries data. How can I merge the files, removing the 30 rows of unnecessary information from the top of each.

I have had success merging them all together using the code below, but that is without removing the initial 30 rows from each .txt file

files=dir('*.txt');
fileout='merged.txt';
fout=fopen(fileout,'w');
for cntfiles=1:length(files)
  fin=fopen(files(cntfiles).name);
  while ~feof(fin)
    fprintf(fout,'%s %d\n',fgetl(fin),cntfiles);
  end
  fclose(fin);
end
fclose(fout);

Answer 1

[Guillaume]

I don't see where the difficulty is in modifying your code to skip the writing of the first 30 lines of each file:

        %...
        fin=fopen(files(cntfiles).name);
        linecount = 0;
        while ~feof(fin)
           linecount = linecount + 1;   
           linetext = fgetl(fin);
           if linecount >= 31  %The first 30 lines are header lines that should be skipped
         fprintf(fout, '%s %d\n', linetext, cntfiles);
           end
        end
        %...