hello, please advice what is wrong at the below syntax: "Trial<-read.table("Trial.txt",header=TRUE) Trial save.image(file="Trial.RData") data(Trial) fit<-logistf(data=Trial, y~x1+x2) " and here is the error I get: "Warning message: In data(Trial) : data set Trial not found " regards, yasmine
> Date: Fri, 28 Jun 2013 10:29:21 +1200 > From: rolf.tur...@xtra.co.nz > To: jdnew...@dcn.davis.ca.us > CC: y_re...@hotmail.com; r-help@r-project.org > Subject: Re: [R] Data Package Query > > On 28/06/13 04:47, Jeff Newmiller wrote: > > <SNIP> > > A common error by beginners (which may or may not be your problem in this > > case) is to create a variable called "data". Unfortunately this hides the > > function named "data" and from that time forward that R session doesn't > > work when you type example code that uses the data function. > > <SNIP> > > This is simply not true. I believe it *used* to be true, sometime > waaaaayyyy back, > but hasn't been true for years. The R language is much cleverer now. > If there > is a function "melvin()" somewhere on the search path and also a data object > "melvin" (earlier on the search path) then doing > > melvin(<whatever>) > > will correctly call the function melvin() with no complaints. The R > language > "can tell" by the parentheses that you mean the *function* melvin and > not the > data object "melvin". > > E.g. > > data <- 42 > require(akima) > akima > Error: object 'akima' not found > data(akima) # No error message, nor nothin'! > akima > # The data set "akima" is displayed. > > All that being said it is ***BAD PRACTICE***, just in terms of > comprehensibility > and avoiding confusion, to give a data set set the same name as a function > (either built in, or one of your own). > > fortune("dog") > > is relevant. > > cheers, > > Rolf Turner > [[alternative HTML version deleted]]
______________________________________________ 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.