hgu2beta7CHR {hgu2beta7} | R Documentation |
Each chromosome of a given organism is assigned a number or letter for labeling purpose. hgu2beta7CHR maps probe ids to the numbers or letters labeling chromosomes where the genes corresponding to the probe ids reside
Since a given gene may be found in more than one chromosomes, each probe id is mapped to a character vector of length 1 or greater. Probe ids that can not be mapped to any chromosome at the time when the package was built are assinged NAs.
Mappings were based on data provided by:
LocusLink:ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.gz. Built: February 16, 2005
Package built: Wed Feb 16 23:32:20 2005
# Convert to a list xx <- as.list(hgu2beta7CHR) # Remove probe ids that do not map to any CHRLOC xx <- xx[!is.na(xx)] if(length(xx) > 0){ # Get the chromosome number for the first five probes xx[1:5] # Get the first one xx[[1]] }