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

Rolf Turner r.turner at auckland.ac.nz
Tue Jan 27 02:53:08 CET 2015

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! :-)


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

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