[R] Inf in regressions
Dimitri Szerman
dimitrijoe at ipea.gov.br
Tue Oct 25 16:47:47 CEST 2005
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 incovenient sometimes.)
Thanks in advance.
Dimitri
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