Hi James, If that's the case, then set.seed(123) x <- c(4,rnorm(20),8) bp <- boxplot(x) bp$out # [1] 4 8 which(x %in% bp$out) # [1] 1 22
is what you are looking for. :-) HTH, Jorge On Wed, Sep 9, 2009 at 4:07 PM, <g...@ucalgary.ca> wrote: > Thank you very much. > But it seems that > x$out returns the values not the indexes of the values (1,22). > -james > > > boxplot returns a dataframe that has the values in it at "$out": > > > >> x <- boxplot(c(4,rnorm(20),8)) > >> x > > $stats > > [,1] > > [1,] -1.5364498 > > [2,] -0.5282799 > > [3,] -0.1398736 > > [4,] 0.3065579 > > [5,] 1.3430388 > > > > $n > > [1] 22 > > > > $conf > > [,1] > > [1,] -0.4210947 > > [2,] 0.1413474 > > > > $out > > [1] 4 8 > > > > $group > > [1] 1 1 > > > > $names > > [1] "1" > > > > > > > > On Wed, Sep 9, 2009 at 3:25 PM, <g...@ucalgary.ca> wrote: > >> I am wondering if you know how to return by function or show in > >> boxplot, > >> the indexes of unusual points, such as, > >> points that are outside the box or in [Q3+1.5IQR,Max]. > >> For example, > >> > >>> boxplot(c(4,rnorm(20),8)) > >> > >> There are 2 unusual points 4 and 8. How to show the indexes of 4 and 8 > >> in > >> the boxplot > >> or return them by function? > >> > >> Thanks, > >> > >> -james > >> > >> ______________________________________________ > >> 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. > >> > > > > > > > > -- > > Jim Holtman > > Cincinnati, OH > > +1 513 646 9390 > > > > What is the problem that you are trying to solve? > > > > > > > > ______________________________________________ > 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. > [[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.
