On Feb 26, 2012, at 10:31 PM, Edgar Alminar wrote:
Hello All,
I have this dataset:
RID VISCODE SCRNO RECNO AEWHEN AEONDATE AEONTIME
INFPOINT.x INFDATE.x INFTIME.x INFPOINT.y INFDATE.y INFTIME.y
1 100 w00 IGI1480069 4 2 09/15/2009 1118
1 09/15/2009 947 14 -4 1117
2 100 w00 IGI1480069 8 2 09/15/2009 1132
1 09/15/2009 947 14 -4 1117
3 100 w00 IGI1480069 5 2 09/15/2009 1125
1 09/15/2009 947 14 -4 1117
I have AEONTIME, INFTIME.x, and INFTIME.y, and they are all military
times.
I'm trying to do a comparison like this:
match2 = subset(match2, AEONTIME < INFTIME.x)
But it's not working correctly.
Define what you expected. In the sample you offered none of those
logical comparisons would be true so you should get a dataframe with
zero rows. (And since you gave the result the same name, you have
basically wiped out match2.)
How do I do this? :-)
Do what?
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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