Displaying 1 result from an estimated 1 matches for "na_and_inf".
2005 Oct 25
2
Inf in regressions
Hi,
Suppose I I wish to run
lm( y ~ x + z + log(w) )
where w assumes non-negative values. A problem arises when w=0, as log(0)
= -Inf, and R doesn't accept that (as it "accepts" NA). Is there a way to
tell R to do with -Inf the same it does with NA, i.e, to ignore it? (
Otherwise I have to do something like
w[w==0] <- NA
which doesn't hurt, but might be a bit