hi, i normalized two color agilent array and when i extract the normalized M values ,in the file there NA is written instead of values for some genes.What does that meaning. [[alternative HTML version deleted]]

Hello Neeraj (?) you're not really giving us much information to work with here. How have your processed the arrays? If you use a background correction resulting in negative values from some probes, then these will become NA for the M values since that's log2(R/G). \Heidi > hi, > > i normalized two color agilent array and when i extract the normalized M > values ,in the file there NA is written instead of values for some > genes.What does that meaning. > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor >