> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
> Behalf Of x
> Sent: Wednesday, April 15, 2009 2:43 PM
> To: r-help@r-project.org
> Subject: Re: [R] problem with read.table
>
>
> 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_2...@yahoo.com> wrote:
>
> > From: x <to_rent_2...@yahoo.com>
> > Subject: RE: [R] problem with read.table
> > To: r-help@r-project.org, "Nordlund, Dan (DSHS/RDA)"
> <nord...@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!
> >
After
data_model.df = read.table("./verify.txt", header=TRUE, nrows=10)
you can attach the dataframe and refer to the individual variables in the
dataframe by name
attach(data_model.df)
or you can refer to the variables as
data_model.df$x
data_model.df$y
or
data_model.df[1]
data_model.df[2]
You might want to read the "Introduction to R" manual, in particular, section 6.
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
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