Provided by: libbio-perl-perl_1.7.2-3_all bug


       Bio::Map::RelativeI - Interface for describing what a Position's coordiantes are
                             relative to.


           # do not use this module directly
           # See Bio::Map::Relative for an example of
           # implementation.


       A Relative object is used to describe what the co-ordinates (numerical(), start(), end())
       of a Position are relative to. By default they are implicitly assumed to be relative to
       the start of the map the Position is on.  But setting the relative() of a Position to one
       of these objects lets us define otherwise.


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AUTHOR - Sendu Bala



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

        Title   : absolute_conversion
        Usage   : my $absolute_coord = $relative->absolute_conversion($pos);
        Function: Convert the start co-ordinate of the supplied position into a number
                  relative to the start of its map.
        Returns : scalar number
        Args    : Bio::Map::PositionI object

        Title   : type
        Usage   : my $type = $relative->type();
        Function: Get the type of thing we are relative to. The types correspond
                  to a method name, so the value of what we are relative to can
                  subsequently be found by $value = $relative->$type;

                  Note that type is set by the last method that was set, or during

        Returns : the string 'map', 'element' or 'position', or undef
        Args    : none

        Title   : map
        Usage   : my $int = $relative->map();
        Function: Get/set the distance from the start of the map that the Position's
                  co-ordiantes are relative to.
        Returns : int
        Args    : none to get, OR
                  int to set; a value of 0 means relative to the start of the map.

        Title   : element
        Usage   : my $element = $relative->element();
        Function: Get/set the map element (Mappable) the Position is relative to. If
                  the Mappable has more than one Position on the Position's map, we
                  will be relative to the Mappable's first Position on the map.
        Returns : Bio::Map::MappableI
        Args    : none got get, OR
                  Bio::Map::MappableI to set

        Title   : position
        Usage   : my $position = $relative->position();
        Function: Get/set the Position your Position is relative to. Your Position
                  will be made relative to the start of this supplied Position. It
                  makes no difference what maps the Positions are on.
        Returns : Bio::Map::PositionI
        Args    : none got get, OR
                  Bio::Map::PositionI to set

        Title   : description
        Usage   : my $description = $relative->description();
        Function: Get/set a textual description of what this relative describes.
        Returns : string
        Args    : none to get, OR
                  string to set