rgug4105aENTREZID        package:rgug4105a.db        R Documentation

_M_a_p _b_e_t_w_e_e_n _M_a_n_u_f_a_c_t_u_r_e_r _I_d_e_n_t_i_f_i_e_r_s _a_n_d _E_n_t_r_e_z _G_e_n_e

_D_e_s_c_r_i_p_t_i_o_n:

     rgug4105aENTREZID is an R object that provides mappings between
     manufacturer identifiers and Entrez Gene identifiers.

_D_e_t_a_i_l_s:

     Each manufacturer identifier is mapped to a vector of Entrez Gene
     identifiers. An 'NA' is assigned to those manufacturer identifiers
     that can not be mapped to an Entrez Gene identifier at this time.

     If a given manufacturer identifier can be mapped to different
     Entrez Gene identifiers from various sources, we attempt to select
     the common identifiers. If a concensus cannot be determined, we
     select the smallest identifier.

     Mappings were based on data provided by: Entrez Gene (
     ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2007-Aug23

_R_e_f_e_r_e_n_c_e_s:

     <URL: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene>

_E_x_a_m_p_l_e_s:

             x <- rgug4105aENTREZID
             # Get the probe identifiers that are mapped to an ENTREZ Gene ID
             mapped_probes <- mappedkeys(x)
             # Convert to a list
             xx <- as.list(x[mapped_probes])
             if(length(xx) > 0) {
               # Get the ENTREZID for the first five probes
               xx[1:5]
               # Get the first one
               xx[[1]]
             }

