[R] extracting the names of the dataframe and variables in aov or lm

[MIYAMOTO Yusuke]

Hello, John:

How about this?
 >  df.name  <- aov.out$call$data
 > var.names <- names(aov.out$model)

I think it works to achieve your goals, but it may be 
that there are more elegant ways.

# By the way, I guess you're an experimental/cognitive psychologist
# from variable names in your example.  It's my joy, because there are 
# few R-users in my circle.

--
  MIYAMOTO Yusuke
  Graduate School of Human Sciences, Osaka University
  <pooh at hus.osaka-u.ac.jp>
  http://koko15.hus.osaka-u.ac.jp/~yusuke/


On Sat, 22 Mar 2003 15:27:17 -0800 (PST)
John Miyamoto <jmiyamot at u.washington.edu> wrote:

> Dear R Users,
>    I want to write a function that applies to the dataframe and variables
> that were used in a previous call to lm or aov.  In order to do this, I
> need to write a function that applies to the output of lm or aov, and
> yields the names of the dataframe and variables that were used in the lm
> or aov analysis.
>    For example, suppose that I give the command:
> 
> aov.out <- aov( Rt ~ Vis*Cmplx*Isi, data = Rt.data)
> 
> I want to write a function E that applies to aov.out such that
> 
> E(aov.out) = c("Rd.data", "Rt", "Vis", "Cmplx", "Isi").
> 
> In other words, I want to write an extractor function that yields the
> dataframe and variables that were used in a previous call to lm or aov.  I
> realize that aov.out$call shows this information, but I don't know how to
> automatically extract the names of the dataframe and variables from
> aov.out$call.  The reason I am trying to extract these names is that I
> want to write a general purpose function that displays descriptive
> statistics and plots that are relevant to an aov or lm analysis.  If I
> could extract these names from previous aov or lm output, I wouldn't have
> to mention them individually as inputs to my function.
> 
> John Miyamoto
> 
> --------------------------------------------------------------------
> John Miyamoto, Dept. of Psychology, Box 351525
> University of Washington, Seattle, WA 98195-1525
> Phone 206-543-0805, Fax 206-685-3157, Email jmiyamot at u.washington.edu
> Homepage http://faculty.washington.edu/jmiyamot/
> --------------------------------------------------------------------
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>