Using arun, data set, dat1 Is this type of thing what you want? dat2 <- subset(dat1, dat1$Play != "B" & dat1$Offense == "Y") with(dat2,table(Play, Offense))
John Kane Kingston ON Canada > -----Original Message----- > From: smartpink...@yahoo.com > Sent: Tue, 21 May 2013 18:57:56 -0700 (PDT) > To: r-help@r-project.org > Subject: Re: [R] Something Very Easy > > HI, > I am not sure about what you expect as output. > > dat1<- read.table(text=" > Offense Play > Y A > N B > Y A > Y C > N B > N C > ",sep="",header=TRUE,stringsAsFactors=FALSE) > > with(dat1,tapply(Play,list(Offense),table)) > #$N > # > #B C > #2 1 > # > #$Y > # > #A C > #2 1 > > #or > with(dat1,tapply(factor(Play),list(Offense),table)) > #$N > # > #A B C > #0 2 1 > # > #$Y > # > #A B C > #2 0 1 > > > A.K. > > >I have lines of data that look like this: >> > > >Offense Play > >Y A > >N B > >Y A > >Y C > >N B > >N C > > >with a bunch of other variables. >> > >I just want to get a table like > >table(Play[Offense=="Y"]) >but one that would return, for the data > above: > >A 2 > >C 1 >> > >Instead of what I get now, from > >table(Play[Offense=="Y"]): > > >A 2 > >B 2 > >C 2 > > ______________________________________________ > 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. ____________________________________________________________ FREE 3D MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas on your desktop! ______________________________________________ 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.
