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: soniaam...@gmail.com; r-help@r-project.org
> From: dwinsem...@comcast.net
> To: chicagobrownb...@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: soniaam...@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]]
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