Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

** Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives. **

1. NA can be of …

Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

The best way to compare values containing NA in R is to define customized comparison functions. Here is an example.

equals = function(x1, x2, na_as_na = FALSE, reverse …