Message-ID: <a0501040bb7da2378d939@[163.1.41.88]>
Date: 2001-09-28T13:08:34Z
From: David Firth
Subject: names of model coefficients etc
I am curious about the reason for the following:
> xzw<-lm(y ~ x+cbind(z,w))
> names1<-names(xzw$coefficients)
> names1
[1] "(Intercept)" "x" "cbind(z, w)z" "cbind(z, w)w"
> names2<-colnames(as.matrix(xzw$model))
> names2
[1] "y" "x" "cbind(z, w).z" "cbind(z, w).w"
> names1==names2
[1] FALSE TRUE FALSE FALSE
It would be helpful for some purposes if all components except the
first here could be TRUE. Presumably there is some good reason for
the difference? Can someone please enlighten me?
--
David Firth Phone +44 1865 278544
Nuffield College Fax +44 1865 278621
Oxford OX1 1NF Secretary +44 1865 278553
United Kingdom Email david.firth at nuffield.ox.ac.uk
http://www.stats.ox.ac.uk/~firth/
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