org.Hs.egGENENAME        package:org.Hs.eg.db        R Documentation

_M_a_p _b_e_t_w_e_e_n _E_n_t_r_e_z _G_e_n_e _I_D_s _a_n_d _G_e_n_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     org.Hs.egGENENAME is an R object that maps entrez gene identifiers
     to the corresponding gene name.

_D_e_t_a_i_l_s:

     Each entrez gene identifier maps to a named vector containing the
     gene name. The vector name corresponds to the entrez gene
     identifier. If the  gene name is unknown, the vector will contain
     an 'NA'.

     Gene names currently include both the official (validated by a
     nomenclature committee) and preferred names (interim selected for
     display) for genes. Efforts are being made to differentiate the
     two by adding a name to the vector.

     Mappings were based on data provided by: Entrez Gene (
     ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2008-Apr2

_E_x_a_m_p_l_e_s:

             x <- org.Hs.egGENENAME
             # Get the gene names that are mapped to an entrez gene identifier
             mapped_genes <- mappedkeys(x)
             # Convert to a list
             xx <- as.list(x[mapped_genes])
             if(length(xx) > 0) {
               # Get the GENE NAME for the first five genes
               xx[1:5]
               # Get the first one
               xx[[1]]
             }

