?cat cat prints text, and returns an invisible NULL. Also, it is general practice to assign values using '<-' even inside of functions, for reasons detailed in ?"<-" -------------------------------------- Jonathan P. Daily Technician - USGS Leetown Science Center 11649 Leetown Road Kearneysville WV, 25430 (304) 724-4480 "Is the room still a room when its empty? Does the room, the thing itself have purpose? Or do we, what's the word... imbue it." - Jubal Early, Firefly
r-help-boun...@r-project.org wrote on 03/16/2011 07:41:36 AM: > [image removed] > > [R] Scope of variable? > > Ravi Kulkarni > > to: > > r-help > > 03/16/2011 09:07 AM > > Sent by: > > r-help-boun...@r-project.org > > I know this is a very elementary question... I could not find a solution > looking at old posts. > I am unable to access a variable outside the scope of a for loop, even when > the variable was defined before the loop: > > haar <- function() { > a = c(1.4560773, 2.3752412, 0.9798882, 3.0909252, 2.3986487, 1.8581543) > > for (i in c(1:100)) { > m = matrix(rnorm(36)+1i*rnorm(36),6) > qrm = qr(m) > Q = qr.Q(qrm) > eival = eigen(Q, only.values=T) > ph = Arg(eival$values) > v = Mod(ph) > a = cat(a,v) > } > hist(a) > } > > The hist command does not plot because a is null there. > How do I plot a? I tried using > > assign("a", a, envir = .GlobalEnv) > > but that does not help either... Neither did using <<- > Any help is most welcome. > Ravi > > -- > View this message in context: http://r.789695.n4.nabble.com/Scope- > of-variable-tp3381485p3381485.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. ______________________________________________ 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.