A exampe for microarray probe mapping using Bioconductor
First, install the corresponding affimatrix chip name:
source("http://bioconductor.org/biocLite.R")
biocLite("hu35ksuba")
second, upload the package from R
third, read the your desired transfer:
x <- hu35ksubaUNIGENE
# Get the probe identifiers that are mapped to an UNIGENE ID
mapped_probes <- mappedkeys(x)
# Convert to a list
xx <- as.list(x[mapped_probes])
if(length(xx) > 0) {
# Get the UNIGENE for the first five probes
xx[1:5]
# Get the first one
xx1
}
last, write into file:
dput(xx,'aaaaa')
dChip
Download dChip
cdf file: https://www.affymetrix.com/support/technical/libraryfilesmain.affx
gene information: http://www.biostat.harvard.edu/complab/dchip/gene_info_file.htm
