Hi, which(x < 15)
omits the NA (treated as false). HTH, b. On 29 January 2012 09:36, Federico Calboli <f.calb...@imperial.ac.uk> wrote: > Dear All, > > just a quick example: > > >> x = 1:25 >> x[12] = NA > >> x > [1] 1 2 3 4 5 6 7 8 9 10 11 NA 13 14 15 16 17 18 19 20 21 22 23 24 25 > >> y = x[x<10] >> y > [1] 1 2 3 4 5 6 7 8 9 NA > > Is there any way of NOT getting NA for y = x[x<10]? Similarly > >> y = x[x<15] >> y > [1] 1 2 3 4 5 6 7 8 9 10 11 NA 13 14 > > > How do I get rid of the NA (not post hoc)? > > BW > > F > > > > -- > Federico C. F. Calboli > Neuroepidemiology and Ageing Research > Imperial College, St. Mary's Campus > Norfolk Place, London W2 1PG > > Tel +44 (0)20 75941602 Fax +44 (0)20 75943193 > > f.calboli [.a.t] imperial.ac.uk > f.calboli [.a.t] gmail.com > > ______________________________________________ > 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. ______________________________________________ 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.