search for: logs555

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2004 Feb 13
5
predict function
I am using R to do a loess normalisation procedure. In 1.5.1 I used the following commands to normalise the variable "logratio", over a 2d surface (defined by coordinates x and y): > array <- read.table("121203B_QCnew.txt", header=T, sep="\t") > array$logs555<-log(array$s555)/log(2) > array$logs647<-log(array$s647)/log(2) > array$logratio<-array$logs555-array$logs647 > array$logav<-(array$logs555+array$logs647)/2 > library(modreg) > loess2d<-loess(logratio~x+y,data=array) > array$logratio2DLoeNorm <-array$logratio - p...