Selecting elements in vector
Thanks - that is exactly what I was looking for Rainer
On Fri, Mar 14, 2008 at 1:10 PM, Henrique Dallazuanna <wwwhsd at gmail.com> wrote:
Try this: x[x %in% y] On 14/03/2008, Rainer M Krug <r.m.krug at gmail.com> wrote:
> Hi > > Consider the following code >
> > x <- rep(1:13, 13)
>
> > y <- 1:3
> > I want to select all elements in x which are equal to 1, 2 or 3. > > I know that I could use >
> > sel <- x==y[1] | x==y[2] | x==y[3] > > x[sel]
> > to obtain the values, but in my analysis, the y-vector is thousands of > elements long. > > Is there any way, that I can do that easily? > > Thanks > > Rainer > -- > Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation Biology (UCT) > > Plant Conservation Unit Department of Botany > University of Cape Town > Rondebosch 7701 > South Africa >
______________________________________________ > R-help at 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-Paran?-Brasil 25? 25' 40" S 49? 16' 22" O
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation Biology (UCT) Plant Conservation Unit Department of Botany University of Cape Town Rondebosch 7701 South Africa