Thanks all of you for your help!!! 2009/10/8 Bert Gunter <gunter.ber...@gene.com>: > I am uncertain what you mean. Possibly... > > x <- 1 >> f <- function()x<<-2 >> f() >> x > [1] 2 > > HOWEVER, this is very dangerous and most unwise as it depends on scoping > rules and where f is called to determine exactly which "x" is being assigned > the value of 2. So I think you would do well to reconsider what you are > trying to do and recast it to work within R's recommended semantics, which > is to explicitly assign modified values as the output of functions with the > original values as arguments. > > > Bert Gunter > Genentech Nonclinical Biostatistics > > > > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Alex Bird > Sent: Thursday, October 08, 2009 10:23 AM > To: Henrique Dallazuanna > Cc: r-help@r-project.org > Subject: Re: [R] external variable by inside-function routines modifications > > Is it possible to do what you mentioned somehow outside of the > function. I mean that there's some function and the only thing I can > do is to point on the variable to be modified inside the function > without any possibilities to modify the very function. > > 2009/10/8 Henrique Dallazuanna <www...@gmail.com>: >> See assign, you can use '<<-' assignment: >> >> foo <- function(var) var <<- var + 1 >> >> On Thu, Oct 8, 2009 at 2:14 PM, devol <sund...@gmail.com> wrote: >>> >>> Dear all, >>> >>> could you please advice whether it is possible somehow to modify an >>> external (from the point of some function view) variable by some >>> function-internal operators. For example >>> >>>> var=1 >>>> foo<-function(var){var=var+1} >>>> foo(var) >>>> var >>> [1] 1 >>> >>> but the goal is to get the var equal to 2 in this specific case. >>> >>> Thanks! >>> -- >>> View this message in context: > http://www.nabble.com/external-variable-by-inside-function-routines-modifica > tions-tp25803308p25803308.html >>> Sent from the R help mailing list archive at Nabble.com. >>> >>> ______________________________________________ >>> 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. >>> >> >> >> >> -- >> Henrique Dallazuanna >> Curitiba-Paraná-Brasil >> 25° 25' 40" S 49° 16' 22" O >> > > ______________________________________________ > 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.