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
University Drive
Townsville, QLD 4810
Australia
Tel: +61 (0)7 4753 8548
Fax: +61 (0)7 4753 8600
Web: http://www.csiro.au/people/Nathan.Watson-Haigh.html
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R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
