function comma2point(File)
% Generate a new file named Oldfilename_Modified.ending. In the new File all
% ',' are changed to '.' Needs a full datapath and filename as input.
   
    Name=textscan(File,'%s%s','delimiter','.');
    NewFile=strcat(Name{1}, '_Modified.',Name{2});
    copyfile(File, NewFile{1});
    file    = memmapfile(NewFile{1},'Writable',true);
    comma   = uint8(',');
    point   = uint8('.');
    file.Data(( file.Data==comma)' ) = point;
    delete(file)
end