makeGOGraph             package:GOstats             R Documentation

_C_o_n_s_t_r_u_c_t _a _G_O _G_r_a_p_h

_D_e_s_c_r_i_p_t_i_o_n:

     The directed acyclic graph (DAG) based on finding the most
     specific terms for the supplied Entrez Gene IDs is constructed and
     returned. The constructuion is per GO ontology (there are three,
     MF, BP and CC) and once the most specific terms have been
     identified then all less specific terms are found (these are the
     parents of the terms) and then their parents and so on, until the
     root is encountered.

_U_s_a_g_e:

     makeGOGraph(x, Ontology="MF", removeRoot = TRUE)

_A_r_g_u_m_e_n_t_s:

       x: A vector of Entrez Gene IDs. 

Ontology: Which of the GO ontologies to use. 

removeRoot: A logical value indicating whether the GO root node should
          be removed or not.

_D_e_t_a_i_l_s:

     For each supplied Entrez Gene identifier all the GO annotations
     (in the specified ontology) are found.

     The mappings are different for the different ontologies. Typically
     a GO indentifier is used only in one specific ontology.

     The resulting structure is stored in a graph using the 'graph'
     package, again from Bioconductor.

_V_a_l_u_e:

     An object that inherits from the 'graph' class. The particular
     implementation is not specified.

_A_u_t_h_o_r(_s):

     R. Gentleman

_R_e_f_e_r_e_n_c_e_s:

     The Gene Ontology Consortium

_S_e_e _A_l_s_o:

     'oneGOGraph'

_E_x_a_m_p_l_e_s:

      gN <- c("71733","224019", "237928", "11308")
      gg1 <- makeGOGraph(gN, "BP")
      

