YEASTCHR {YEAST} | R Documentation |
Each chromosome of a given organism is assigned a number or letter for labeling purpose. YEASTCHR 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:
Yeast Genome:http://www.yeastgenome.org/DownloadContents.shtml. Built: Yeast Genome data are built at various time intervals. Sources used were downloaded Fri Jan 7 14:56:40 2005
Package built: Fri Jan 7 16:12:38 2005
# Convert to a list xx <- as.list(YEASTCHR) # 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]] }