[R] Bug in predict.lm?

Bert Gunter gunter.berton at gene.com
Fri Nov 15 17:57:12 CET 2013

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

> 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)



Bert Gunter
Genentech Nonclinical Biostatistics

(650) 467-7374

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