Ancova in R?
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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._