Whoops! Thanks to everyone and sorry for asking something so trivial and obvious for everyone. I really hadn't noticed it before.
Cheers! i. > > ----- Original Message ----- > > From: David Winsemius > > Sent: 07/06/12 05:32 PM > > To: knallg...@gmx.com > > Subject: Re: [R] automatic completion of object names > > > > On Jul 6, 2012, at 9:36 AM, knallg...@gmx.com wrote: > > > > > Hello there, > > > > > > I just upgraded to R 2.15 (from R 2.12) on a Windows XP machine and > > > noticed some puzzling behaviour (that in my opinion did not exist in > > > R 2.12). > > > > > > It is possible now to call objects without spelling out the full > > > object name. R now seems to use that (unique) object which shares > > > the same beginning of the called object, even though the originally > > > called object might not even exist. > > > > > > This is quite awkwardly described, but perhaps you know what I'm > > > talking about? > > > > > > Let's say I'm using the Mroz data supplied with the car package: > > > > > > require(car) > > > data(Mroz) > > > > > > there is no variable called "w" in that dataframe, but calling > > > > > > summary(Mroz$w) #### Mroz$w does not exist > > > > > > does not return any error but instead gives the same result as > > > > > > summary(Mroz$wc) ##### exists in Mroz > > > > > > > > > I find this behaviour *very* undesirable. Is there any way to switch > > > it off? > > > > It has always been the case. See the ?Extract page. The controlling > > sentence is here> > > > > " x$name is equivalent to x[["name", exact = FALSE]]. Also, the > > partial matching behavior of[[ can be controlled using the exact > > argument." > > > > (I'm using R2.14.2 ... further evidence this is not new in 2.15.x) > > > > > summary(Mroz$w) > > no yes > > 541 212 > > > > -- > > David Winsemius, MD > > West Hartford, CT ______________________________________________ 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.
