
attach(attach(dat))
 
should be 
 
attach(dat)

Is attach() broken? I've been using attach() successfully for months. I was surprised that header=TRUE did not map the headers to the data. But since attach() worked, I've never asked for an enhancement to the various read functions.
 
Thanks,
 
Frank
 
 

> CC: soniaamin5@gmail.com; r-help@r-project.org
> From: dwinsemius@comcast.net
> To: chicagobrownblue@hotmail.com
> Subject: Re: [R] about lm
> Date: Sat, 17 Nov 2012 08:31:01 -0800
> 
> 
> On Nov 17, 2012, at 4:29 AM, FJ M wrote:
> 
> >
> > dat=read.csv("c:\\ven.csv",header=TRUE,sep=";");
> > attach(attach(dat))
> 
> It is generally less error prone to avoid attach (even once).
> > dat
> > lm.1<-lm(ve~ su)
> 
> And instead use:
> 
> lm.1<-lm(ve~ su, data=dat)
> 
> > summary(lm.1)
> >
> > GL Frank
> >> Date: Fri, 16 Nov 2012 20:42:39 +0100
> >> From: soniaamin5@gmail.com
> >> To: r-help@r-project.org
> >> Subject: [R] about lm
> >>
> >> Dear friends,
> >> I have a csv file entitled ven.csv located in C:\\, this file 
> >> contains only
> >> two columns:"ve" and "su" I have written the following lines:
> >> data=read.csv("c:\\ven.csv",header=TRUE,sep=";");
> >>
> >> lm(ve~ su)
> >> I have obtained the following message:
> >>
> >> Error in eval(expr, envir, enclos) : object 've' does not exist. 
> >> What's the
> >> problem? thank you for your help in advance
> >>
> >> [[alternative HTML version deleted]]
> >>
> 
> When you do get around to reading the Posting Guide, please note the 
> section where the request to NOT post in HTML is made.
> 
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> 
> 
> -- 
> David Winsemius, MD
> Alameda, CA, USA
> 
 		 	   		  
	[[alternative HTML version deleted]]


