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Christopher Fields
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Bio::Map::SimpleMap - A MapI implementation handling the basics of a Map


    use Bio::Map::SimpleMap;

    my $map = Bio::Map::SimpleMap->new(-name => 'genethon',
                                      -type => 'Genetic',
                                      -units=> 'cM',
                                      -species => $human);

    foreach my $marker ( @markers ) { # get a list of markers somewhere

    foreach my $marker ($map->get_elements) {
        # do something with this Bio::Map::MappableI


This is the basic implementation of a Bio::Map::MapI. It handles the essential storage of name, species, type, and units.

It knows which map elements (mappables) belong to it, and their position.

Subclasses might need to redefine or hardcode type(), length() and units().


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

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


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 of the bugs and their resolution. Bug reports can be submitted via the web:


AUTHOR - Jason Stajich

Email jason@bioperl.org


Heikki Lehvaslaiho heikki-at-bioperl-dot-org Lincoln Stein lstein@cshl.org Sendu Bala bix@sendu.me.uk


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


 Title   : new
 Usage   : my $obj = Bio::Map::SimpleMap->new();
 Function: Builds a new Bio::Map::SimpleMap object
 Returns : Bio::Map::SimpleMap
 Args    : -name    => name of map (string)
           -species => species for this map (Bio::Species) [optional]
           -units   => map units (string)
           -uid     => Unique Id [defaults to a unique integer]


 Title   : species
 Usage   : my $species = $map->species;
 Function: Get/Set Species for a map
 Returns : Bio::Taxon object or string
 Args    : (optional) Bio::Taxon or string


 Title   : units
 Usage   : $map->units('cM');
 Function: Get/Set units for a map
 Returns : units for a map
 Args    : units for a map (string)


 Title   : type
 Usage   : my $type = $map->type
 Function: Get/Set Map type
 Returns : String coding map type
 Args    : (optional) string


 Title   : name
 Usage   : my $name = $map->name
 Function: Get/Set Map name
 Returns : Map name
 Args    : (optional) string


 Title   : length
 Usage   : my $length = $map->length();
 Function: Retrieves the length of the map.
           It is possible for the length to be unknown for maps such as
           Restriction Enzyme, will return 0 in that case.
 Returns : integer representing length of map in current units
           will return 0 if length is not calculateable
 Args    : none


 Title   : unique_id
 Usage   : my $id = $map->unique_id;
 Function: Get/Set the unique ID for this map
 Returns : a unique identifier
 Args    : [optional] new identifier to set


 Title   : add_element
 Usage   : $map->add_element($element)
 Function: Tell a Bio::Map::MappableI object its default Map is this one; same
           as calling $element->default_map($map).

                   *** does not actually add the element to this map! ***

 Returns : none
 Args    : Bio::Map::MappableI object
 Status  : Deprecated, will be removed in next version


 Title   : get_elements
 Usage   : my @elements = $map->get_elements;
 Function: Retrieves all the elements on a map (unordered unless all elements
           have just 1 position on the map, in which case sorted)
 Returns : Array of Map elements (L<Bio::Map::MappableI>)
 Args    : none


 Title   : each_element
 Function: Synonym of the get_elements() method.
 Status  : deprecated, will be removed in the next version


 Title   : purge_element
 Usage   : $map->purge_element($element)
 Function: Purge an element from the map.
 Returns : none
 Args    : Bio::Map::MappableI object


 Title   : annotation
 Usage   : $map->annotation($an_col);
           my $an_col = $map->annotation();
 Function: Get the annotation collection (see Bio::AnnotationCollectionI)
           for this annotatable object.
 Returns : a Bio::AnnotationCollectionI implementing object, or undef
 Args    : none to get, OR
           a Bio::AnnotationCollectionI implementing object to set