Hi, I am getting the same error message as Michael got (R terminal (R 2.15) on Ubuntu 12.04).
testfun(x=5) #Error in sys.frame(which = x) : not that many frames on the stack print(testfun(x=6)) #Error in sys.frame(which = x) : not that many frames on the stack A.K. ----- Original Message ----- From: R. Michael Weylandt <michael.weyla...@gmail.com> To: Martin Ivanov <tra...@abv.bg> Cc: r-help@r-project.org Sent: Sunday, October 7, 2012 5:34 AM Subject: Re: [R] get: problem with environments On Sun, Oct 7, 2012 at 10:16 AM, Martin Ivanov <tra...@abv.bg> wrote: > Dear R users, > > I am running R-2.15.1 in Linux Slackware64-14.0. Here is my minimal working > example: > > testfun <- function (x) { > a <- 0; > sapply(X="a", FUN=get, envir=sys.frame(which=x)); > } > > Inside R, that is R called from within a Linux terminal, the following code > works: > testfun(x=5) > print(testfun(x=6)) > But within rkward the above code fails and the following works: > testfun(x=1) > print(testfun(x=2)) > > As you can see, the number of contexts up the call stack that contain the > variable "a" > varies depending on the implementation. If I call testfun() from within > print(), I have to go > one context up the call stack than if I call testfun() alone by itself. This > implies > some inherent instability of my code. Unlike you, I don't get testfun(x = 5) to work in a terminal emulator. As expected, I only get x =1 and print(... x = 2) to work and I just tried this with R 2.15.0 and R devel, both in Terminal and by way of ESS. It could be a buglet introduced later into the 2.15 branch, but that seems unlikely. As expected, > testfun(5) Error in sys.frame(which = x) : not that many frames on the stack Can someone else confirm the behavior you see? Cheers, Michael ______________________________________________ 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.