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 encountered this error when my equivalent of col2 was an integer64 rather than an integer and when using natural and polynomial splines, splines::bs and splines:ns for example:

m.fit <- lm(col1 ~ ns(col2))
m.fit <- lm(col1 ~ bs(col2, degree = 3))

Converting to a standard integer worked for me:

m.fit <- lm(col1 ~ ns(as.integer(col2)))
m.fit <- lm(col1 ~ bs(as.integer(col2), degree = 3))