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 [[alternative HTML version deleted]]

Hi Ganshan, kOverA( ) is a function from genefilter package. kOverA() is used to generate a filter that evaluates to T if at least k elements are larger than A. So, kOVerA(1,6) evaluates to T if at least 1 element is larger than 6. I think there is no specific meaning of *6* in this example. These lines of codes here are just used to demonstrate how to use foldFilt function with kOverA. Gang On Fri, May 13, 2011 at 11:14 PM, wang peter <wng.peter at="" gmail.com=""> wrote: > 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 > > ? ? ? ?[[alternative HTML version deleted]] > > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor > -- Gang Chen Computer Science Ph.D Candidate Central South University, Changsha, China,Cell Phone:13574886823 E-mail: chen.gang1983 at gmail.com Blog: www.gossipcoder.com