On 8/26/06, Patrick Connolly <[EMAIL PROTECTED]> wrote: > On Sat, 26-Aug-2006 at 09:57AM +0100, Patrick Burns wrote: > > |> > sub.m <- lapply(m, function(x)x[x>2]) > |> > sub.m > |> [[1]] > |> [1] 3 4 > |> > |> [[2]] > |> [1] 4 5 > |> > |> [[3]] > |> [1] 4 > |> > |> > sub.m[unlist(lapply(sub.m, function(x) length(x) == 2))] > |> [[1]] > |> [1] 3 4 > |> > |> [[2]] > |> [1] 4 5 > |> > |> > sub4.m <- lapply(m, function(x)x[x>4]) > |> > sub4.m[unlist(lapply(sub4.m, function(x) length(x) > 0))] > |> [[1]] > |> [1] 5 > > Or slightly shorter in this case: > > sub.m[sapply(sub.m, function(x) length(x) == 2)] >
or even shorter: sub.m[sapply(sub.m, length) == 2] ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.
