Linear model function lm() error: NA/NaN/Inf in foreign function call (arg 1)

Question

Say I have data.frame a

I use

m.fit <- lm(col2 ~ col3 * col4, na.action = na.exclude)

col2 has some <

Answer 1

I just suffered another possibility, after all posible na.omit and na.exclude checks.

I was taking something like:

lm(log(x) ~ log(y), data = ...)

Without noticing that, for some values in my dataset, x or y could be zero: log(0) = -Inf

So just another thing to watch out for!