Dear Dr. Miller and others, Hi, I am trying to use simpleaffy to examine at the quality metrics of the chips. The problem is that I am working with 276 HG-Focus chips and even working on a linux server I don't have enough RAM. Does it matter if I don't load the whole experiment into R? Is it a valid approach to look at, say 50 chips, at a time? Thanks, Alex ------------------------------------ Alex Lam PhD student Department of Genetics and Genomics Roslin Institute (Edinburgh) Roslin Midlothian EH25 9PS Phone +44 131 5274471 Web http://www.roslin.ac.uk