On 31/10/2010 4:47 PM, Wu Gong wrote:
Hi Duncan: I'm curious about the environment setting. ?eval says: "If envir is not specified, then the default is parent.frame() (the environment where the call to eval was made). " So what's the difference between set envir=parent.frame() or not?
If you pass parent.frame() as an argument, it will be one level up: it's the parent of the function that calls eval. If you leave it at the default, it's the parent of eval, i.e. the function that calls it.
Duncan Murdoch ______________________________________________ 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.
