Hi Thanks for the reply. I implemented your solution to my problem but ...
For some of my column there is not enough data to do t-test so it gives me error and stops the for loop, is any graceful way to check for error msg and say ok if there is no $p.value continue to the next column Once again thx for help. sata pinal wrote: > > I have two matrix with same dimensions. I want to do t.test using each > column from 2 different matrix. > Row n Column names in both matrix are same. > > e.g. > Matrix1 > id VC1 VC2 VC3 > R 1 2 3 > R1 4 5 6 > R3 7 8 9 > > > Matrix2 > id VC1 VC2 VC3 > R 10 11 12 > R1 13 14 15 > R3 16 17 18 > > want to do t.test using each column (with same name ) using Matrix1 and > Matrix2 > > for eg t.test(Matrix1$VC1, Matrix2$VC1)$p.value > > What is the best way to do it. I have dataset with 4000 columns for each > matrix with same row and column names. > > Thanks a lot. > > --------------------------------- > Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try > it now. > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://www.nabble.com/Reg-%3A-%09using-two-different-matrix-%3A-how-to-do-t.test-tf4834072.html#a13845405 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
