Hi and what is wrong?
Petr > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of noobmin > Sent: Tuesday, October 23, 2012 2:52 PM > To: r-help@r-project.org > Subject: Re: [R] How to use tapply with more than one variables grouped > > I used these commands previously: > > data <- read.csv("test.csv") > > tbl= > > > data.frame(tapply(data$contb_receipt_amt,list(data$cand_nm,data$contbr_ > st),sum)) > > tbl > AL AR CA NY > Doug 250 250 250 NA > Jennifer 20 340 300 100 > Michele 250 500 250 60 > Obama 15 45 520 600 > > > > -- > View this message in context: http://r.789695.n4.nabble.com/How-to-use- > tapply-with-more-than-one-variables-grouped-tp4646948p4647122.html > 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. ______________________________________________ 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.