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I use matplot to get the density curve and then I use abline(v=g$V2, col = 3 ) to get the vertical line. Goal : I want very small lines at the bottom on the x axis , if possible in the arrow forms instead of vertical lines on the whole graph. Thanks a lot. [[alternative HTML version deleted]]

I have two matrix with same dimensions. I want to do t.test using each column from 2 different matrix. 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 for eg t.test(Matrix1$VC1, Matrix2$VC1)$p.value What is the best way to do it. I have dataset with

I have data matrix and I want to replace values. > try Rh.Rj RR.Rj RT.Rj V1 0.08465125 0.19159688 0.617294468 V2 0.74853203 0.88826790 0.113979660 V3 0.68767961 0.17979307 0.013802852 V4 0.31722379 0.25611821 -0.021954454 V5 0.17931687 0.04491838 0.011484522 V6 0.87455663 0.16846121 0.002241211 V7 0.61770029 0.01090132 0.000079900 > try[try > 0.05]<-0 >

...Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ------------------------------ Message: 38 Date: Tue, 20 Nov 2007 00:36:32 -0800 (PST) From: mogra <funnymoody999 at yahoo.com> Subject: [R] t.test : extracting Error To: r-help at r-project.org Message-ID: <13845405.post at talk.nabble.com> Content-Type: text/plain; charset=us-ascii Hi Thanks for the reply. I implemented your solution to my problem but ... For some of my column there is not enou...

I have huge data file, and I would like randomize just one column at a time , is there any easy way? Thanks a lot. -- View this message in context: http://www.nabble.com/Randomizing-one-column-in-the-dataMatrix-tf4957535.html#a14197423 Sent from the R help mailing list archive at Nabble.com.