Please look at the help file ?ancova in the HH package. Please get HH_1.17 which was up on CRAN yesterday. The source file has propagated to the mirrors. As of a few minutes ago, the Windows binary is on cran.at.r-project.org but not yet at the mirrors.
Be sure to have history recording on in the graphics window because it will be very helpful to toggle between the displays for the different models. Rich ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
