Perl script to count number of Ns in a multifasta file !
...=~tr/nN/nN/); $l=length($_); print $h,"\t",$l,"\t",$n,"\t",$n/($l-$n),"\n"; } } close(I); __END__ Note: Convert sequences in oneline first perl -pe '/^>/ ? print...2198 days ago
1574 days ago