Bio::Phenotype::MeSH::Twig - Context for a MeSH term use Bio::Phenotype::MeSH::Twig # create a twig object my $twig = Bio::Phenotype::MeSH::Twig->new(); # the term has only one parent in any twig $twig->parent('Fats'); # a twig makeas sense only in the context of a term # which is a Bio::Phenotype::MeSH::Term object # a term can have many twigs i.e. it can appear in many places in # the hierarchy # $ term->add_twig($twig); # adding the twig into a term adds a link into into it $twig->term eq $term; # a twig can know about other terms under the parant node $twig->add_sister('Bread', 'Candy', 'Cereals'); print join ( ', ', $twig->each_sister()), "\n"; # a twig can know about other terms under this term $twig->add_child('Butter', 'Margarine'); print join ( ', ', $twig->each_child()), "\n"; This class represents the immediate surrounding of a MeSH term. It keeps track on nodes names above the current node ('parent') other nodes at the same level ('sisters') and nodes under it ('children'). Note that these are name strings, not objects. Each twig can be associated with only one term, but term can have multiple twigs. (Twigs can be though to be roles for a term.) Bio::Phenotype::MeSH::Term

Mailing Lists
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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 email or the web: bioperl-bugs@bio.perl.org http://bugzilla.bioperl.org/ Heikki Lehvaslaiho, heikki@ebi.ac.uk The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _

parent
Title : parent Usage : $obj->parent( "r1" ); or print $obj->parent(); Function: Set/get for the parent. Returns : A parent [scalar]. Args : A parent [scalar] (optional).

term
Title : term Usage : $obj->term( "r1" ); or print $obj->term(); Function: Set/get for the term. Returns : A term [scalar]. Args : A term [scalar] (optional).

add_child
Title : add_child Usage : $obj->add_child( @children ); or $obj->add_child( $child ); Function: Pushes one or more child term names [scalars, most likely Strings] into the list of children. Returns : Args : scalar(s).

each_child
Title : each_child() Usage : @gs = $obj->each_child(); Function: Returns a list of gene symbols [scalars, most likely Strings] associated with this phenotype. Returns : A list of scalars. Args :

purge_children
Usage : $obj->purge_child(); Function: Deletes the list of children associated with this term. Returns : A list of scalars. Args :

add_sister
Title : add_sister Usage : $obj->add_sister( @sisters ); or $obj->add_sister( $sister ); Function: Pushes one or more sister term names [scalars, most likely Strings] into the list of sisters. Returns : Args : scalar(s).

each_sister
Title : each_sister() Usage : @gs = $obj->each_sister(); Function: Returns a list of gene symbols [scalars, most likely Strings] associated with this phenotype. Returns : A list of scalars. Args :

purge_sisters
Usage : $obj->purge_sister(); Function: Deletes the list of sisters associated with this term. Returns : A list of scalars. Args :