[R] lm - log(variable) - skip log(0)

[agent dunham]

I want to do a lm regression, some of the variables are going to be affected
with log, I would like not no take into account the values which imply doing
log(0) 

for just one variable I have done the following but it doesn't work: 

lmod1.lm <- lm(log(dat$inaltu)~log(dat$indiam),subset=(!(dat$indiam %in%
c(0,1))) 

and obtain: 

Error en lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : 
  0 (non-NA) cases 

lmod1.lm <- lm(log(dat$inaltu)~log(dat$indiam),subset=(!(dat$indiam = 0)),
na.action=na.exclude) 

and obtain 

Error en lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : 
  NA/NaN/Inf en llamada a una función externa (arg 1)

Thanks, user at host.com
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