Map probeset IDs to Chromosomes

Description

gahgu95eCHR is an R object that provides mappings between a probeset identifier and the chromosome that contains the gene of interest.

Details

Each probeset identifier maps to a vector of chromosomes. If the chromosomal location is unknown, the vector will contain an NA.

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

Examples

        x <- gahgu95eCHR
        # Get the probe identifiers that are mapped to a chromosome
        mapped_probes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_probes])
        if(length(xx) > 0) {
          # Get the CHR for the first five probes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }