Brilliant, thanks very much!! Works fine. Dan On 6 Dec 2012, at 18:25, arun kirshna [via R] wrote:
> Hi, > Your question is not very clear. I hope you are not looking for the subset > option in summary(lm()). > If you want just the summary(), then use '&' or '|' > For e.g. > dat1<-read.table(text=" > opcorn Oilamt Batch Yield > plain little large 8.2 > gourmet little large 8.6 > plain lots large 10.4 > gourmet lots large 9.2 > plain little small 9.9 > gourmet little small 12.1 > plain lots small 10.6 > gourmet lots small 18.0 > plain little large 8.8 > gourmet little large 8.2 > plain lots large 8.8 > gourmet lots large 9.8 > plain little small 10.1 > gourmet little small 15.9 > plain lots small 7.4 > gourmet lots small 16.0 > ",sep="",header=TRUE) > dat1$Yield[dat1$opcorn=="gourmet"&dat1$Oilamt=="lots"] > #[1] 9.2 18.0 9.8 16.0 > summary(dat1$Yield[dat1$opcorn=="gourmet"&dat1$Oilamt=="lots"]) > # Min. 1st Qu. Median Mean 3rd Qu. Max. > # 9.20 9.65 12.90 13.25 16.50 18.00 > summary(dat1$Yield[dat1$opcorn=="gourmet"|dat1$Oilamt=="lots"]) > # Min. 1st Qu. Median Mean 3rd Qu. Max. > # 7.40 8.75 10.10 11.25 13.05 18.00 > A.K. > > > If you reply to this email, your message will be added to the discussion > below: > http://r.789695.n4.nabble.com/Summary-command-Two-independent-variables-against-dependent-tp4652326p4652404.html > To unsubscribe from Summary command: Two independent variables against > dependent., click here. > NAML -- View this message in context: http://r.789695.n4.nabble.com/Summary-command-Two-independent-variables-against-dependent-tp4652326p4652405.html Sent from the R help mailing list archive at Nabble.com. [[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.
