Does this do what you want? > b.test <- 3 > > f <- function(a,b) { + a+b.test + } > > f(10,20) [1] 13 > > environment(f) <- baseenv() > > f(10,20) Error in f(10, 20) : object 'b.test' not found > >
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Steve Lianoglou > Sent: Thursday, July 02, 2009 12:17 PM > To: R-help@r-project.org > Subject: [R] Warning when trying to access a variable out of scope? > > Hi, > > I was wondering if I could get R to warn me, or give me a rude > awakening somehow, if I'm accessing a variable that is out of my > function's scope. > > For example, often times I'm creating a function as I'm testing it in > the REPL, copying and pasting between both. > > As a simple example, I might end up with a function like: > > f <- function(a, b) { > a + b.test > } > > Where b.test was defined in my workspace as I'm mucking about in the > REPL, but "clearly" I should have written: > > f <- function(a,b) { > a + b > } > > I could go on for a while in my session w/o noticing the problem > (since b.test is in my global env), and unbeknownst to me, my function > will keep accessing the "b.test" variable when I really want it to > work on the "b" var that I'm passing in to it. > > Is there some setting or someway I can get R to warn me that "b.test" > is being accessed outside the scope of my function? > > Thanks, > -steve > > -- > Steve Lianoglou > Graduate Student: Physiology, Biophysics and Systems Biology > Weill Medical College of Cornell University > > Contact Info: http://cbio.mskcc.org/~lianos/contact > > ______________________________________________ > 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.