hgu95av2ENSEMBL package:hgu95av2.db R Documentation _M_a_p _E_n_s_e_m_b_l _g_e_n_e _a_c_c_e_s_s_i_o_n _n_u_m_b_e_r_s _w_i_t_h _m_a_n_u_f_a_c_t_u_r_e_r _i_d_e_n_t_i_f_i_e_r_s _D_e_s_c_r_i_p_t_i_o_n: hgu95av2ENSEMBL is an R object that contains mappings between manufacturer identifiers and Ensembl gene accession numbers. _D_e_t_a_i_l_s: This object is a simple mapping of manufacturer identifiers to Ensembl gene Accession Numbers. 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 <- hgu95av2ENSEMBL # Get the manufacturer IDs that are mapped to an Ensembl ID mapped_genes <- mappedkeys(x) # Convert to a list xx <- as.list(x[mapped_genes]) if(length(xx) > 0) { # Get the Ensembl IDs for the first five genes xx[1:5] # Get the first one xx[[1]] } #For the reverse map ENSEMBL2EG: # Convert to a list xx <- as.list(hgu95av2ENSEMBL2PROBE) if(length(xx) > 0){ # Gets the manufacturer IDs for the first five Ensembl IDs xx[1:5] # Get the first one xx[[1]] }