hello every one:
 i am gaoshan, from a bioinformatics group in kansas university.
when i used the package affycoretools. i found the example
f1 <- kOverA(1,6)
filt <- filterfun(f1)
foldFilt(eset, groups=1:4, comps=list(c(2, 1), c(3, 1), c(4, 1)),
compnames=c("Expt1-Cont","Expt2-
Cont","Expt3-Cont"), filterfun = filt)

who can tell me why does the second parameter of kOverA(1,6) was set to 6？
thx
gao shan

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