NA-aware comparison of two vectors

Copied from http://www.cookbook-r.com/Manipulating_data/Comparing_vectors_or_factors_with_NA/. This function returns TRUE wherever elements are the same, including NA's, and FALSE everywhere else.

compareNA(v1, v2)

Arguments

v1	A vector
v2	A vector

Examples

a <- c(NA, 1, 2, NA)
b <- c(1, NA, 2, NA)
compareNA(a, b)
#> [1] FALSE FALSE  TRUE  TRUE