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Bio::DB::GFF::Util::Binning - binning utility for Bio::DB::GFF index


 use Bio::DB::GFF::Util::Binning qw(bin bin_bot bin_top);
 my $tier = bin($start,$stop,$min);


This is a utility module that exports the functions bin(), bin_bot() and bin_top(). These functions translate a range on the genome into a named bin that is used as an index in the Bio::DB::GFF schema. The index makes certain range retrieval queries much faster.


The remainder of the document describes the function calls. No calls are exported by default, but must be imported explicitly.

$bin_name = bin($start,$stop,$bin_size)

Given a start, stop and bin size on the genome, translate this location into a bin name. In a list context, returns the bin tier name and the position that the bin begins.

$bottom = bin_bot($tier,$start)

Given a tier name and a range start position, returns the lower end of the bin range.

$top = bin_top($tier,$end)

Given a tier name and the end of a range, returns the upper end of the bin range.


None known yet.




Lincoln Stein <>.

Copyright (c) 2001 Cold Spring Harbor Laboratory.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.