drosophila2LOCUSID        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:

     drosophila2LOCUSID is an R environment that provides mappings
     between manufacturer ids and Entrez Gene ids.

_D_e_t_a_i_l_s:

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

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

     Mappings were based on data provided by:

     Entrez Gene:<URL:
     http://gopher5/compbio/annotationSourceData/ftp.ncbi.nlm.nih.gov/g
     ene/DATA/>. Built: Source data downloaded from Entrez Gene on Tue
     May 17 18:36:42 2005

     Package built: Tue May 17 18:42:45 2005

_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(drosophila2LOCUSID)
         # Remove probe ids that do not map to any LOCUSID
         xx <- xx[!is.na(xx)]
         if(length(xx) > 0){
             # The LOCUSIDs for the first two elements of XX
             xx[1:2]
             # Get the first one
             xx[[1]]
         }

