In a CSV file, I would like to replace (delete) a headerline, first line, and create a new headerline. So the CSV file is (for this example I applied extra spaces to make it more readable):
State, Tornado, Hurricane, Earthquake, Texas, 34, 5, 0, Indiana, 8, 0, 2, California, 2, 2, 20, North Carolina, 1, 10, 1,
So now I need to delete the first headerline and replace it with a new headerline -- ST TOR HUR EAR -- see below:
ST, TOR, HUR, EAR, Texas, 34, 5, 0, Indiana, 8, 0, 2, California, 2, 2, 20, North Carolina, 1, 10, 1,
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Assuming that there is no comma but tabs ( \t ) as delimiters, I give you one way to do it:
% - Read input file data content (without header). fid_in = fopen('myFile.csv', 'r') ; % Open input file for reading. fgetl(fid_in) ; % Skip header line in input file. content = fread(fid_in) ; % Read rest of input file. fclose(fid_in) ; % Close input file.
% - Write output file: new header + previous data content. fid_out = fopen('myFile_newHeader.csv', 'w') ; % Open input file for writing. fprintf(fid_out, 'ST\tTOR\tHUR\tEAR\n') ; % Output new header. fwrite(fid_out, content) ; % Output previous data content. fclose(fid_out) ; % Close output file.