\HeaderA{org.Sc.sgdCHR}{Map ORF IDs to Chromosomes}{org.Sc.sgdCHR}
\keyword{datasets}{org.Sc.sgdCHR}
\begin{Description}\relax
org.Sc.sgdCHR is an R object that provides mappings between ORF
identifiers and the chromosome that contains the gene of interest.
\end{Description}
\begin{Details}\relax
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
\end{Details}
\begin{Examples}
\begin{ExampleCode}
        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]]
        }
\end{ExampleCode}
\end{Examples}

