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...("AA","BB","CC","AA"),y=1:4)) > df x y 1 AA 1 2 BB 2 3 CC 3 4 AA 4 I want to modify this df this way : if df$x=="AA" then df$y=df$y*10 if df$x=="BB" then df$y=df$y*25 and so on with other conditions. TY for any help. Trading ? A2CT2 Ltd. Arnaud Gaboury ? A2CT2 Ltd.

...%in% c(1,10,100)==TRUE),cat("YES\n"),cat("NO\n")) YES Error in ifelse(all(l %in% c(1, 10, 100) == TRUE), cat("YES\n"), cat("NO\n")) : replacement has length zero I have the correct answer, YES, but with an Error. Why? TY for any help Arnaud Gaboury ? A2CT2 Ltd.

...("AA","BB","CC","AA"),y=1:4)) > df x y 1 AA 1 2 BB 2 3 CC 3 4 AA 4 I want to modify this df this way : if df$x=="AA" then df$y=df$y*10 if df$x=="BB" then df$y=df$y*25 and so on with other conditions. TY for any help. Trading ? A2CT2 Ltd.

...ata.frame") As you can see, they have same column names. My idea was to merge these two df when passing as argument "not to take into account duplicate rows", so I will get one df with rows which are not in both df. Is it possible? How to do it? TY for any help. Arnaud Gaboury ? A2CT2 Ltd.

...", "6", "7", "8", "9", "11", "21", "31", "41", "61", "71", "51", "10", "81", "91"), class = "data.frame") TY for your help Arnaud Gaboury ? A2CT2 Ltd.

...df=="BO"]<-"BOB" But my df is bigger indeed with other elements. I was thinking using replace(), but can't get any clean result ( NA or all elements replaced with only one), neither with sapply(). TY for any help, and sorry for the n00b question. Arnaud Gaboury ? A2CT2 Ltd.

Dear helpers, I would like to install R on a computer with Ubuntu Jaunty. Unfortunately, Jaunty does not appear in any CRAN mirror website I have tried (France, Canada, Italy, Germany). Could you give me any mirror website allowing installation on Jaunty?or could you give me a procedure to passby this problem? Thanks for your help, Best regards, Marine Veyssi?re

I am trying to install rJava on a WUBI Ubuntu 11.10 installation of R with no luck. I was originally trying to install the iplots package and encountered this rJava problem. Code used: install.packages("rJava") (CRAN mirrors --Canada(ON) and Canada(QC2) I installed iplots with no problem on Windows 7. I know just about zero about Ubuntu or Linux in general so I have no idea what I