On 1/20/2009 11:34 AM, Simon Pickett wrote: > Hi all, > > How would you create a list of data.frames within a loop, then bind all > the elements of the list using rbind? > > take this example of matrices with differing numbers of rows > > for(i in 1:3){ > assign(paste("s",i, sep=""),matrix(data = NA, nrow = i, ncol = 3, byrow > = FALSE, dimnames = NULL)) > } > s1 > s2 > s3 > > I want to bind all the matrices at the end with do.call(rbind...) > rather than listing all the elements manually with rbind(s1,s2,s3...) > and so on. > > thanks in advance.
df.list <- vector("list", 3) # create list for(i in 1:3){df.list[[i]] <- matrix(data = NA, nrow = i, ncol = 3, byrow = FALSE, dimnames = NULL)} do.call(rbind, df.list) # rbind list elements > Simon. > > ______________________________________________ > 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. -- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.