hu6800CHR               package:hu6800               R Documentation

_A_n_n_o_t_a_t_i_o_n _o_f _p_r_o_b_e _i_d_s _b_y _c_h_r_o_m_o_s_o_m_e _n_u_m_b_e_r_s _t_h_e _c_o_r_r_e_s_p_o_n_d_i_n_g
_g_e_n_e_s _r_e_s_i_d_e

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

     hu6800CHR mappes probe ids to chromosome numbers where the genes
     corresponding to the probe ids reside

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

     This is an environment object with key and value pairs. Keys are
     probe ids and values are the mapped chromosome numbers are. Values
     are vectors of length 1 or more depending on whether a probe id
     can be mapped to only one or more chromosomes. Mappings between
     probe ids and chromosomes were obtained through their mappings to
     LocusLink ids.

     Mappings were based on data provided: LocusLink built: March  3,
     2004. <URL: ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.ga>

     Package built: Wed Mar  3 16:27:29 2004

_R_e_f_e_r_e_n_c_e_s:

     <URL: ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.gz>

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

             # Convert to a list
             xx <- as.list(hu6800CHR)
             # Remove probe ids that do not map to any CHRLOC
             xx <- xx[!is.na(xx)]
             if(length(xx) > 0){
                 # Get the chromosome number for the first five probes
                 xx[1:5]
                 # Get the first one
                 xx[[1]]
             }

