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

You should have a read the book A Beginner’s Guide to R for a complete explanation on this. Specifically, it mentions the following error:

Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok,...): NA/NaN/Inf in foreign function call (arg 4)

The solution is to add a small constant value to the Intensity data, for example, 1. Note that there is an on-going discussion in the statistical community concerning adding a small value. Be that as it may, you cannot use the log of zero when doing calculations in R.