NAME

       Ace::Sequence::Homol - Temporary Sequence Homology Class

SYNOPSIS

           # Get all similarity features from an Ace::Sequence
           @homol = $seq->features('Similarity');

           # sort by score
           @sorted = sort { $a->score <=> $b->score } @homol;

           # the last one has the highest score
           $best = $sorted[$#sorted];

           # fetch its associated Ace::Sequence::Homol
           $homol = $best->target;

           # print out the sequence name, DNA, start and end
           print $homol->name,' ',$homol->start,'-',$homol->end,"\n";
           print $homol->asDNA;

DESCRIPTION

       Ace::Sequence::Homol is a subclass of Ace::Object (not Ace::Sequence) which is specialized
       for returning information about a DNA or protein homology.  This is a temporary
       placeholder for a more sophisticated homology class which will include support for
       alignments.

OBJECT CREATION

       You will not ordinarily create an Ace::Sequence::Homol object directly.  Instead, objects
       will be created in response to an info() or group() method call on a similarity feature in
       an Ace::Sequence::Feature object.  If you wish to create an Ace::Sequence::Homol object
       directly, please consult the source code for the new() method.

OBJECT METHODS

       Most methods are inherited from Ace::Object.  The following methods are also supported:

       start()
             $start = $homol->start;

           Returns the start of the area that is similar to the Ace::Sequence::Feature from which
           his homology was derived.  Coordinates are relative to the target homology.

       end()
             $end = $homol->end;

           Returns the end of the area that is similar to the Ace::Sequence::Feature from which
           his homology was derived.  Coordinates are relative to the target homology.

       asString()
             $label = $homol->asString;

           Returns a human-readable identifier describing the nature of the feature.  The format
           is:

            $name/$start-$end

           for example:

            HUMGEN13/1-67

           This method is also called automatically when the object is treated in a string
           context.

SEE ALSO

       Ace, Ace::Object, Ace::Sequence,Ace::Sequence::FeatureList, Ace::Sequence::Feature, GFF

AUTHOR

       Lincoln Stein <lstein@w3.org> with extensive help from Jean Thierry-Mieg
       <mieg@kaa.crbm.cnrs-mop.fr>

       Copyright (c) 1999, Lincoln D. Stein

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.  See DISCLAIMER.txt for disclaimers of warranty.