org.Sc.sgdCHR         package:org.Sc.sgd.db         R Documentation

_M_a_p _O_R_F _I_D_s _t_o _C_h_r_o_m_o_s_o_m_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     org.Sc.sgdCHR is an R object that provides mappings between ORF
     identifiers and the chromosome that contains the gene of interest.

_D_e_t_a_i_l_s:

     Each ORF identifier maps to a vector of a chromosome. 

     Mappings were based on data provided by: Yeast Genome (
     ftp://genome-ftp.stanford.edu/pub/yeast/data_download ) on
     2008-Sep06

_E_x_a_m_p_l_e_s:

             x <- org.Sc.sgdCHR
             # Get the ORF identifiers that are mapped to a chromosome
             mapped_genes <- mappedkeys(x)
             # Convert to a list
             xx <- as.list(x[mapped_genes])
             if(length(xx) > 0) {
               # Get the CHR for the first five genes
               xx[1:5]
               # Get the first one
               xx[[1]]
             }

