try this: v <- list(c(1,2), c(3,4), 5, c(-3:3)) sapply(v, "[", i = 2)
I hope it helps. Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm Quoting carol white <[EMAIL PROTECTED]>: > Hi, > How is it possible to extract athe elements of a list of vectors in > a fixed position? suppose that I have a list of 2-element vectors, > how can I extract the 2nd element of all vectors in the list? Can it > be done with indexing and not by element name? > > Thanks > > carol > > So in this example, I want to extract 2 and 4 > v = list (c(1,2), c(3, 4)) > >> v > [[1]] > [1] 1 2 > > [[2]] > [1] 3 4 > > > > > --------------------------------- > Never miss a thing. Make Yahoo your homepage. > [[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. > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ 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.
