[R] problem with read.table

[x]

attach() fixed the problem. Thanks!!


--- On Wed, 4/15/09, Talita Perciano <talitaperciano at gmail.com> wrote:

> From: Talita Perciano <talitaperciano at gmail.com>
> Subject: Re: [R] problem with read.table
> To: to_rent_2000 at yahoo.com
> Cc: r-help at r-project.org
> Date: Wednesday, April 15, 2009, 6:04 PM
> I agree with Daniel J. Nordlund that the problem must be
> that you are not
> attaching the data to directly access x and y. Try to do
> that with
> attach(data_model.df) right after reading the data.
> 
> Talita
> 
> 2009/4/15 x <to_rent_2000 at yahoo.com>
> 
> >
> > I forgot to show that my file indeed contains x, y
> values:
> >
> > x       y
> > 1       8.2
> > 2       18
> > 3       -17.6
> > 4       -3.4
> > 5       6.8
> > 6       11.3
> > 7       1.5
> > 8       11
> > 9       -3.3
> > 10      8.1
> >
> >
> > --- On Wed, 4/15/09, x <to_rent_2000 at yahoo.com>
> wrote:
> >
> > > From: x <to_rent_2000 at yahoo.com>
> > > Subject: RE: [R] problem with read.table
> > > To: r-help at r-project.org, "Nordlund, Dan
> (DSHS/RDA)" <
> > NordlDJ at dshs.wa.gov>
> > > Date: Wednesday, April 15, 2009, 5:09 PM
> > > Thank you for the reply. That format works but
> since I need
> > > access to x, y subsequent to lm() also, I tried
> the
> > > following but now I'm back to the same old
> error message
> > > of "object y not being found".
> > >
> > > data_model.df =
> read.table("./verify.txt",
> > > header=TRUE, nrows=10);
> > > dd = datadist(data_model.df);
> > > options(datadist = 'dd');
> > > describe(data_model.df);
> > >
> > > f <- lm(y ~ x)
> > > print( summary(f) )
> > >
> > > plot(x, y)
> > >
> > > I tried without "options" and
> > > "describe" and still the same problem.
> > >
> > > Thanks again!
> > >
> > >
> > > --- On Wed, 4/15/09, Nordlund, Dan (DSHS/RDA)
> > > <NordlDJ at dshs.wa.gov> wrote:
> > >
> > > > From: Nordlund, Dan (DSHS/RDA)
> > > <NordlDJ at dshs.wa.gov>
> > > > Subject: RE: [R] problem with read.table
> > > > To: to_rent_2000 at yahoo.com,
> r-help at r-project.org
> > > > Date: Wednesday, April 15, 2009, 5:01 PM
> > > > > -----Original Message-----
> > > > > From: r-help-bounces at r-project.org
> > > > [mailto:r-help-bounces at r-project.org] On
> > > > > Behalf Of x
> > > > > Sent: Wednesday, April 15, 2009 1:54 PM
> > > > > To: r-help at r-project.org
> > > > > Subject: [R] problem with read.table
> > > > >
> > > > >
> > > > > Hi all,
> > > > >
> > > > > I've simple code to read a file
> (verify.txt
> > > in the
> > > > same directory as the script file) but
> > > > > when I run this I get
> > > > > "Error in eval(expr, envir,
> enclos) : object
> > > > "y" not found".
> > > > >
> > > > > data_model.df =
> > > read.table("./verify.txt",
> > > > header=TRUE, nrows=10);
> > > > > f <- lm(y ~ x)
> > > > >
> > > > > Could someone pls tell me what's
> wrong with
> > > this
> > > > code?
> > > > >
> > > > > Sincere thanks!
> > > >
> > > > I don't think there is a problem with
> > > read.table().
> > > > You need to attach the dataframe or specify
> > > > data=data_model.df in the call to lm()
> > > >
> > > > f <- lm(y ~ x, data = data_model.df)
> > > >
> > > > Hope this is helpful,
> > > >
> > > > Dan
> > > >
> > > > Daniel J. Nordlund
> > > > Washington State Department of Social and
> Health
> > > Services
> > > > Planning, Performance, and Accountability
> > > > Research and Data Analysis Division
> > > > Olympia, WA  98504-5204
> >
> > ______________________________________________
> > R-help at 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.
> >
> 
> 
> 
> -- 
> Talita Perciano
> Instituto de Matemática e Estatísitca
> Universidade de São Paulo - USP
> PhD Student in Computer Science
> São Paulo, SP, Brazil
> Tel: +55 11 8826 7092
> 
> "Success is not final, failure is not fatal: it is the
> courage to continue
> that counts."
> (Winston Churchill)