[R] Intersect, Union of date/time ranges

[David Winsemius]

On Mar 17, 2010, at 10:52 PM, Nathan S. Watson-Haigh wrote:

> I have 2 sets of data which defines the start and end of date/time  
> periods. I want to be able to obtain the following:
>
> 1) The intersect of those 2 sets of date/time ranges i.e. return  
> start/end date/time ranges where both sets overlap

?intersect
?max
?min

> 2) The union of those 2 sets of date/time ranges i.e. return the  
> start/end date/time ranges which are in 1 or both sets

?union

>
> Is there anything that is currently able to do this? If not, I'll  
> start to code something.

Are you suggesting you have such data and have tried these functions  
with undesired effects?

>
> Kind regards,
> Nathan
>
> -- 
> --------------------------------------------------------
> Dr. Nathan S. Watson-Haigh
> OCE Post Doctoral Fellow
> CSIRO Livestock Industries
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> Australia
>
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>
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