[R] Sum function and missing values --- need to mimic SAS sum function

[Rolf Turner]

On 27/01/15 13:42, Boris Steipe wrote:
>
>
>> sum(x, na.rm=!all(is.na(x)))
>
>
> That's the kind of idiom that brings the poor chap who has to maintain it to tears.
>
> ;-)

It looks perfectly lucid to me.  If you think that that's obscure code, 
you ain't been around! :-)

cheers,

Rolf Turner

-- 
Rolf Turner
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
Home phone: +64-9-480-4619