[R] Ancova in R?

Prof Brian D Ripley ripley at stats.ox.ac.uk
Wed Feb 9 08:11:27 CET 2000

On Tue, 8 Feb 2000, Pete Hurd wrote:

> How to Ancova in R?
> I know this has got to be an FAQ, because I see it asked in the lists, but
> I haven't seen an answer to it.

That's what the aov() function does, if I understand you correctly, and it
is itself a wrapper for calls to lm.  ancova normally means just the
analysis of variance for some simple regression models.  The S language has
an elegant formula notation for regression models rather than a whole set
of special-purpose procedures.

> I see the R-sm has the ancova thing happening, but I kind of doubt that
> what I'm trying to do is "smoothing"...

And what is R-sm? An obscure reference to the sm package on CRAN,
perhaps?   There is a function sm.ancova in that package, and that compares
a set of nonparametric regression curves.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list