Filtering out Duplicate IDs

[idorjee]

hi all,
i would really appreciate if you could let me know how i could get just the first row of each of the unique Accession in the tab-delimited file like one below.

Accession TC# TCAcc Evalue %ID Score
2005490039 3.A.1.2.9 Q7BSH4 9.00E-18 24.78991597 289
2005490039 3.A.1.111.2 P33116 1.00E-15 28.94736842 289
2005490048 3.A.1.107.1 P30962 1.00E-17 35.34482759 31
2005490048 9.B.14.2.1 P29961 2.00E-16 27.97202797 31

thanks a lot.

[KevinADC]

what have you tried so far?

[idorjee]

this is what i did and it doesn't do anything, just gets the same input file.

while (<INFILE>) {
	if ($_ =~ /(\S+)\t(.+)/) {
		my $qa = $1;
		my $rest = $2;
		my $lowest = $qa;
		$lowest = $qa if $qa ne $lowest;
		print OUTFILE "$lowest\t$rest\n";
	}
}

thanks

[KevinADC]

You need to use a hash to keep track of what you have "seen" so you don't repeat it:

my %seen = ();
while(<INFILE>){
   if (/^(\S+)\t/) {
     next if ++$seen{$1} > 1;
   }
   print OUTFILE;
}

[idorjee]

thanks alot Kevin,
that worked fine.
^ ^*