On Fri, 16 Sep 2005 10:34:57 -0700 (PDT) Martin Lam wrote: > Hi, > > I was wondering if it's possible to get the row > numbers from a filtering. Here's an example: > > # give me the rows with sepal.length == 6.2 > iris[(iris[,1]==6.2),] > > # output > Sepal.Length Sepal.Width Petal.Length Petal.Width > Species > 69 6.2 2.2 4.5 1.5 > versicolor > 98 6.2 2.9 4.3 1.3 > versicolor > 127 6.2 2.8 4.8 1.8 > virginica > 149 6.2 3.4 5.4 2.3 > virginica > > What I really want is that it return the row numbers: > 69, 98, 127, 149.
R> which(iris[,1]==6.2) [1] 69 98 127 149 hth, Z > Thanks in advance, > > Martin > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html