drosophila2ENTREZID       package:drosophila2       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:

     drosophila2ENTREZID is an R environment 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:\<URL: ftp://ftp.ncbi.nlm.nih.gov/gene/DATA/>. Built:
     Source data downloaded from Entrez Gene on Fri Aug 24 17:54:57
     2007

     Package built: Fri Aug 24 18:00:58 2007

_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:

         # Convert the environment to a list
         xx <- as.list(drosophila2ENTREZID)
         # Remove probe identifiers that do not map to any ENTREZID
         xx <- xx[!is.na(xx)]
         if(length(xx) > 0){
             # The ENTREZIDs for the first two elements of XX
             xx[1:2]
             # Get the first one
             xx[[1]]
         }

