has specified data input has specified data output has format specification is published by CEL binary format R data frame matchprobes http://bioconductor.org/packages/2.4/bioc/html/matchprobes.html Nandini Badarinarayan Basic infrastructure for using oligonucleotide microarray reporter sequence information for preprocessing and quality assessment. For general work with genomic sequences, this package is inadequate. Please refer to the Biostrings package for that. BioConductor Software CDF binary format R software CEL ASCII format Bioconductor