[R] Merging Irregular Time Series With NAs

[Gabor Grothendieck]

On Tue, Jun 23, 2009 at 10:10 AM, Gabor
Grothendieck<ggrothendieck at gmail.com> wrote:
> On Tue, Jun 23, 2009 at 10:04 AM, David Winsemius<dwinsemius at comcast.net> wrote:
>>
>> On Jun 23, 2009, at 9:50 AM, Gabor Grothendieck wrote:
>>
>>> Your zoo object is illegal since zoo objects are not supposed to
>>> have duplicated times;
>>
>> They were unique at the sub-second level.
>>
>>> however, ignoring that if the object has
>>> at most one NA in each row, which is the case in the example,
>>> then this will produce a numeric vector and you can create a
>>> new zoo object out of that:
>>>
>>>> rowSums(z, na.rm = TRUE)
>>>
>>> [1] 1.63755 1.63760 1.63760 1.63755 1.63755 1.63760
>>
>> But that will not give the desired answer if both aq$mid and d2$mid were
>> present at the same time.
>
> What was written was:
> "if the object has at most one NA in each row, which is the case in
> the example, ..."
>

hit send too quickly.  continuing:

but what was meant was at most one non-NA.