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.

AUTHOR

Lincoln Stein <[email protected]> with extensive help from Jean Thierry-Mieg <[email protected]>

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.