GOCCCHILDREN               package:GO               R Documentation

_A_n_n_o_t_a_t_i_o_n _o_f _G_O _i_d_e_n_t_i_f_i_e_r_s _b_y _t_h_e _G_O _i_d_e_n_t_i_f_i_e_r_s _o_f _t_h_e_i_r
_d_i_r_e_c_t _c_h_i_l_e_r_e_n

_D_e_s_c_r_i_p_t_i_o_n:

     GOCCCHILDREN mappes GO ids to the GO ids of their direct children
     under cellular component (CC). Direct children of a given GO id
     are those GO ids correponding to all the children nodes that have
     direct link to the node for the GO id of concern based on the
     directed acyclic graph defined by Gene Ontology Consortium. GO
     terms for children nodes are more specific than that for the
     parents

_D_e_t_a_i_l_s:

     This is an environment object with key and value pairs. GO ids are
     keys and the corresponding children GO ids are values. Values are
     vectors of length 1 or greater depending on whether the GO id of
     concern has only one or more children. GO ids that do not have any
     child node are assigned NA as the values.

     Cellular component is defined as the subcellular structures,
     locations, and macromolecular complexes; examples include nucleus,
     telomere, and origin recognition complex as defined b y Gene
     Ontology Consortium. 

     Mappings were based on data provided:

     Gene Ontology Consortium built: 2004-02-01.<URL:
     http://www.godatabase.org/dev/database/archive/2004-02-01/go_20040
     2-termdb.xml.gz>

     Package built: Wed Mar  3 16:27:29 2004

_R_e_f_e_r_e_n_c_e_s:

     <URL: http://www.geneontology.org/> and <URL:
     http://www.ncbi.nlm.nih.gov/LocusLink>

_E_x_a_m_p_l_e_s:

       require("GO", character.only = TRUE) || stop("GO unavailable")
       # Convert the environment object to a list
       xx <- as.list(GOCCCHILDREN)
       # Remove GO ids that do not have any children
       xx <- xx[!is.na(xx)]
       if(length(xx) > 0){
          # Get the first element
          xx[[1]]
          # Get more than one elements
          xx[1:3]
       }

