Thank You very much for Your replies.
Dear Michael,
"Does this persist after a new session (perhaps running as R --vanilla) and/or
reinstall?"
Yes, it does. After running R --vanilla, still there are 4 contexts more on the
call stack.
"You didn't show us how you tried to use parent.frame()"
I did it like this:
testfun1 <- function (x1) {
a1 <- 1;
sapply(X="a1", FUN=get, envir=parent.frame(x1));
}
testfun1(x1=1);
The above code never succeeds no matter what a number I give to x1.
" 3. Why does the number of contexts in the call stack differ in R and in
rkward?
It shouldn't. This is an issue that needs further sorting out."
Here is some more info on my setup:
sessionInfo()
R version 2.15.1 (2012-06-22)
Platform: x86_64-slackware-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US LC_NUMERIC=C LC_TIME=en_US
[4] LC_COLLATE=C LC_MONETARY=en_US LC_MESSAGES=en_US
[7] LC_PAPER=C LC_NAME=C LC_ADDRESS=C
[10] LC_TELEPHONE=C LC_MEASUREMENT=en_US LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] tools_2.15.1
Best regards,
Martin
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