R help - Feb 2003 - attr function

I've been trying unsuccessfully to extract the term labels from a model
frame using the attr function.

The code is as follows

a <- data.frame(col1=c(1,2,3,2,1,3),col2=c(2,4,7,6,4,3))
b <- model.frame(col2~col1,data=a)

Now the term.labels attribute is col1, but how do I get this from the b data
frame attributes?

Thanks in advance...


Shawn Way

attr(attr(b, "terms"), "term.labels")

works, as I would have expected.  This is part of the "terms"
attribute,
not of the model frame per se.

On Wed, 5 Feb 2003, Shawn Way wrote:
> 
> I've been trying unsuccessfully to extract the term labels from a model
> frame using the attr function.
> 
> The code is as follows
> 
> a <- data.frame(col1=c(1,2,3,2,1,3),col2=c(2,4,7,6,4,3))
> b <- model.frame(col2~col1,data=a)
> 
> Now the term.labels attribute is col1, but how do I get this from the b
data
> frame attributes?
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  stats.ox.ac.uk/~ripley
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