How about, more simply:
> mysum <- function(x)sum(x,na.rm = any(!is.na(x)))
> mysum(c(1,NA))
[1] 1
> mysum(c(NA,NA))
[1] NA
-- Bert
On Wed, Oct 12, 2011 at 11:03 AM, David Winsemius wrote:
>
> On Oct 12, 2011, at 1:33 PM, David Winsemius wrote:
>
>
>> On Oct 12, 2011, at 12:45 PM, Samir Benzerf
On Oct 12, 2011, at 1:33 PM, David Winsemius wrote:
On Oct 12, 2011, at 12:45 PM, Samir Benzerfa wrote:
Hello everybody,
is there any way to treat NA's as zero when they are summed up with
numbers,
but to treat them as NA's when summed up only with NA's.
Specifically want
that: 5+NA=
On Oct 12, 2011, at 12:45 PM, Samir Benzerfa wrote:
Hello everybody,
is there any way to treat NA's as zero when they are summed up with
numbers,
but to treat them as NA's when summed up only with NA's.
Specifically want
that: 5+NA=5, but NA+NA=NA (and not zero).
sum(x , na.rm=TRUE)
Hello everybody,
is there any way to treat NA's as zero when they are summed up with numbers,
but to treat them as NA's when summed up only with NA's. Specifically want
that: 5+NA=5, but NA+NA=NA (and not zero).
Any ideas?
Best, S.B.
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