Yes, I realize that it is more likely a misunderstanding on my part. Suitable humility will be tendered if this is pointed out.
The claimed "bug" is that predict.lm throws an error when the scale argument is specified with interval = "conf" (and in some other cases): > z <- lm(rnorm(10)~I(1:10)) > predict(z,int="conf",scale=1) Error in predict.lm(z, int = "conf", scale = 1) : object 'w' not found R version 3.0.2 (2013-09-25) Platform: i386-w64-mingw32/i386 (32-bit) Cheers, Bert -- Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 ______________________________________________ R-help@r-project.org 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.