Check whether a factor has numeric levels only

Description

This function checks whether a factor has only numeric or any non-numeric factor levels.

Usage

is_num_fac(x)

Arguments

Value

Logical, TRUE if factor has numeric factor levels only, FALSE otherwise.

Examples

# numeric factor levels
f1 <- factor(c(NA, 1, 3, NA, 2, 4))
is_num_fac(f1)

# not completeley numeric factor levels
f2 <- factor(c(NA, "C", 1, 3, "A", NA, 2, 4))
is_num_fac(f2)

# not completeley numeric factor levels
f3 <- factor(c("Justus", "Bob", "Peter"))
is_num_fac(f3)