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L L wrote: > Hi, > > I tried to use esApply to analyze affy data (aaa) saved in affyBatch. However it created some problem. > > f<- function(x) > { > tmp <- t.test(x[index2-1],x[index1-1]) > c(mean(tmp$estimate), diff(tmp$estimate), tmp$statistic, tmp$p.value) > } > > scores <- esApply(exprs(expr), 1, f) > > Error in function (classes, fdef, mtable) : > unable to find an inherited method for function "esApply", for signature "matrix" nor should there be, the help page should be consulted before the mailing list es in esApply stands for ExpressionSet, so scores <- esApply(expr, 1, f) is more likely to work, > > Can anybody help me out. what is the problem? Thank you in advance! > > LL > > > > _________________________________________________________________ > > > 08 > [[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 > -- Robert Gentleman, PhD Program in Computational Biology Division of Public Health Sciences Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N, M2-B876 PO Box 19024 Seattle, Washington 98109-1024 206-667-7700 rgentlem at fhcrc.org