On 14 May 2004, Peter Dalgaard wrote: > Murray Jorgensen <[EMAIL PROTECTED]> writes: > > > Greetings all! > > > > This problem occurs using R 1.8.1 on Windows XP. I downloaded the > > binaries for R and all packages, including the VR bundle, in December > > 2003. > > > > The data consists of NZ$ prices and attributes for 643 cars. > > > > > summary(price) > > Min. 1st Qu. Median Mean 3rd Qu. Max. NA's > > 14290 35800 48990 65400 79000 285000 2 > > > library(MASS) > > > boxcox(price ~ doors+CC+KW+KG+LENGTH, lambda=seq(-0.1,0.5,length=30)) > > > boxcox(price ~ doors+CC+KW+KG+LENGTH, lambda=seq(-0.5,0.1,length=30)) > > > > This all works fine, I get a fairly sharp peak near lambda=-0.25, but then: > > > > > logtrans(price ~ doors+CC+KW+KG+LENGTH, alpha=seq(-10000,0,length=30)) > > Error in eval(expr, envir, enclos) : Object "price" not found > > > > The issue is that logtrans has a 'data' argument that defaults to NULL > (the author(s) may have a reason for having this inconsistent with > boxplot?). Adding data=.GlobalEnv seems to work.
It's an R/S difference. data=NULL or list() in S does give you the normal search path. I guess this got noticed for boxplot and not logtrans. Using a data argument would in any case be a very good idea. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
