On Fri, 2004-04-09 at 12:03, Rajarshi Guha wrote: > Hi, > I was playing with some code and came upon this situation. > > > x <- c(1, rep(0,9)) > > x > [1] 1 0 0 0 0 0 0 0 0 0 > > idx <- 1:10 > > x[idx] <- x[idx] + 1 > > x > [1] 2 1 1 1 1 1 1 1 1 1 > > This is expected. But if I do: > > > x <- c(1, rep(0,9)) > > x > [1] 1 0 0 0 0 0 0 0 0 0 > > idx <- rep(0,10) > > idx > [1] 0 0 0 0 0 0 0 0 0 0 > > x[idx] <- x[idx] +1 > > x > [1] 1 0 0 0 0 0 0 0 0 0
Aah, I realize that the second code snippet is not supposed to work. What I meant was: > x <- c(1, rep(0,9)) > x [1] 1 0 0 0 0 0 0 0 0 0 > idx <- rep(1,10) >idx [1] 1 1 1 1 1 1 1 1 1 1 > x[idx] <- x[idx] + 1 [1] 2 0 0 0 0 0 0 0 0 0 I expected that x would be [1] 11 0 0 0 0 0 0 0 0 0 Or am I thinking about it wrong? Thanks, ------------------------------------------------------------------- Rajarshi Guha <[EMAIL PROTECTED]> <http://jijo.cjb.net> GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE ------------------------------------------------------------------- Disembowelling takes guts. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
