m <- matrix(1:9, nc=3) a <- list(m, m+10, m+100, m+1000) sapply(a, function(mat) mat[1,1]) [1] 1 11 101 1001
On Thu, 2004-09-16 at 12:33, Perez Martin, Agustin wrote: > DeaR useRs: > > I have a list with 500 elements, in each other there are data.frames and I > want to take the first row and the first column of each elements of my list > since the first to the 500-th. > > Thanks and excuse my bad English. > > --- > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
