hgu95eCHR {hgu95e.db} | R Documentation |
hgu95eCHR is an R object that provides mappings between a manufacturer identifier and the chromosome that contains the gene of interest.
Each manufacturer identifier maps to a vector of chromosomes. Due to
inconsistencies that may exist at the time the object was built,
the vector may contain more than one chromosome (e.g., the identifier may map
to more than one chromosome). If the chromosomal location is unknown,
the vector will contain an NA
.
Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2007-Aug23
x <- hgu95eCHR # 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]] }