[R] factor labels in model.frame

[Dennis L. Malandro]

Hello,

model.frame changes the factor labels when na.action =
na.omit.

> f <- gl(3, 2, 6, paste('m', 1:3, sep = ''))
> r <- c(NA, NA, 3:6)
> mf <- model.frame(~ r + f, na.action = na.omit)
> mf
  r  f
3 3 m1
4 4 m1
5 5 m2
6 6 m2

But it seems like it should be this
> mf
  r  f
3 3 m2
4 4 m2
5 5 m3
6 6 m3

intead.

How do I get the second mf?

Thanks a lot,
Dennis

R 1.4.1
Windows 98



__________________________________________________

Yahoo! Tax Center - online filing with TurboTax

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._