hu35ksubdCHRLOC         package:hu35ksubd.db         R Documentation

_M_a_p _M_a_n_u_f_a_c_t_u_r_e_r _I_D_s _t_o _C_h_r_o_m_o_s_o_m_a_l _L_o_c_a_t_i_o_n

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

     hu35ksubdCHRLOC is an R object that maps manufacturer identifiers
     to the starting position of the gene. The position of a gene is
     measured as the number of base pairs.

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

     Each manufacturer identifier maps to a named vector of chromosomal
     locations, where the name indicates the chromosome. Due to
     inconsistencies that may exist at the time the object was built,
     these vectors may contain more than one chromosome and/or
     location. If the chromosomal location is unknown, the vector will
     contain an 'NA'.

     Chromosomal locations on both the sense and antisense strands are
     measured as the number of base pairs from the p (5' end of the
     sense strand) to q (3' end of the sense strand) arms. Chromosomal
     locations on the antisense strand have a leading "-" sign (e. g.
     -1234567). 

     Since some genes have multiple start sites, this field can map to
     multiple locations.

     Mappings were based on data provided by: UCSC Genome
     Bioinformatics (Homo sapiens) (
     ftp://hgdownload.cse.ucsc.edu/goldenPath/currentGenomes/Homo_sapiens
     ) on 2006-Apr14

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

             x <- hu35ksubdCHRLOC
             # Get the probe identifiers that are mapped to chromosome locations
             mapped_probes <- mappedkeys(x)
             # Convert to a list
             xx <- as.list(x[mapped_probes])
             if(length(xx) > 0) {
               # Get the CHRLOC for the first five probes
               xx[1:5]
               # Get the first one
               xx[[1]]
             }

