> I think that's a bit too strict for me, so I wrote my own:
>
> na.warn <- function(object, ...) {
> missing <- complete.cases(object)
> if (any(missing)) {
> warning("Dropping ", sum(missing), " rows with missing values",
> call. = FALSE)
> }
>
> na.exclude(object, ...)
> }
That should, of course, have been:
missing <- !complete.cases(object)
:-/
Hadley
--
http://hadley.nz
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