gahgu133aDESCRIPTIONS      package:gahgu133a.db      R Documentation

_M_a_p _b_e_t_w_e_e_n _p_r_o_b_e_s_e_t _I_D_s _a_n_d _g_e_n_e _d_e_s_c_r_i_p_t_i_o_n_s

_D_e_s_c_r_i_p_t_i_o_n:

     gahgu133aDESCRIPTIONS is an R object that maps probeset
     identifiers to the corresponding gene name.

_D_e_t_a_i_l_s:

     Each probeset identifier maps to a named vector containing the
     gene descriptions. The vector name corresponds to the source of
     each descrioption. If the gene name is unknown, the vector will
     contain an 'NA'.

     Mappings were based on data provided by: Genecards (
     http://www.genecards.org ) on 2009-mag06

_E_x_a_m_p_l_e_s:

             x <- gahgu133aDESCRIPTIONS
             # Get the probe identifiers that are mapped to a gene description
             mapped_probes <- mappedkeys(x)
             # Convert to a list
             xx <- as.list(x[mapped_probes])
             if(length(xx) > 0) {
               # Get the DESCRIPTIONS for the first five probes
               xx[1:5]
               # Get the first one
               xx[[1]]
             }

