Try: with(m, which((x >= 10 & y == "A")))
On 07/03/2008, zhihuali <[EMAIL PROTECTED]> wrote: > > Hi, netters, > > This is probably a rookie question but I couldn't find the answer after > hours of searching and trying. > > Suppose there'a a dataframe M: > > x y > 10 A > 13 B > 8 A > 11 A > > I want to locate the rows where x >=10 and y="A". I know how to do it to > vectors by using > which, but how to do it with the dataframe? > > Thank you very much! > > > Zhihua Li > > > _________________________________________________________________ > MSN 中文网,最新时尚生活资讯,白领聚集门户。 > > [[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. > > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.