NAME

       Bio::Location::CoordinatePolicyI - Abstract interface for objects implementing a certain
       policy of computing integer-valued coordinates of a Location

SYNOPSIS

           # get a location, e.g., from a SeqFeature
           $location = $feature->location();
           # examine its coordinate computation policy
           print "Location of feature ", $feature->primary_tag(), " employs a ",
                 ref($location->coordinate_policy()),
                 " instance for coordinate computation\n";
           # change the policy, e.g. because the user chose to do so
           $location->coordinate_policy(Bio::Location::NarrowestCoordPolicy->new());

DESCRIPTION

       Objects implementing this interface are used by Bio::LocationI implementing objects to
       determine integer-valued coordinates when asked for it. While this may seem trivial for
       simple locations, there are different ways to do it for fuzzy or compound (split)
       locations. Classes implementing this interface implement a certain policy, like 'always
       widest range', 'always smallest range', 'mean for BETWEEN locations', etc. By installing a
       different policy object in a Location object, the behaviour of coordinate computation can
       be changed on-the-fly, and with a single line of code client-side.

FEEDBACK

       User feedback is an integral part of the evolution of this and other Bioperl modules. Send
       your comments and suggestions preferably to one of the Bioperl mailing lists.  Your
       participation is much appreciated.

         bioperl-l@bioperl.org                  - General discussion
         http://bioperl.org/wiki/Mailing_lists  - About the mailing lists

   Support
       Please direct usage questions or support issues to the mailing list:

       bioperl-l@bioperl.org

       rather than to the module maintainer directly. Many experienced and reponsive experts will
       be able look at the problem and quickly address it. Please include a thorough description
       of the problem with code and data examples if at all possible.

   Reporting Bugs
       Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their
       resolution.  Bug reports can be submitted via the web:

         https://redmine.open-bio.org/projects/bioperl/

AUTHOR - Hilmar Lapp, Jason Stajich

       Email hlapp@gmx.net, jason@bioperl.org

APPENDIX

       The rest of the documentation details each of the object methods. Internal methods are
       usually preceded with a _

   start
         Title   : start
         Usage   : $start = $policy->start($location);
         Function: Get the integer-valued start coordinate of the given location as
                   computed by this computation policy.
         Returns : A positive integer number.
         Args    : A Bio::LocationI implementing object.

   end
         Title   : end
         Usage   : $end = $policy->end($location);
         Function: Get the integer-valued end coordinate of the given location as
                   computed by this computation policy.
         Returns : A positive integer number.
         Args    : A Bio::LocationI implementing object.