Also works as expected on the MacOSX 64 bit binary for R 2.8.1
(patched).
On May 5, 2009, at 4:06 PM, jim holtman wrote:
Seems to work fine for me on R 2.9.0:
as.POSIXct("2009/03/26 01:00:00 AM" , format="%Y/%m/%d %I:%M:%S %p" )
[1] "2009-03-26 01:00:00 GMT"
as.POSIXct("2009/03/26 01:00:00 PM" , format="%Y/%m/%d %I:%M:%S %p" )
[1] "2009-03-26 13:00:00 GMT"
On Tue, May 5, 2009 at 2:55 PM, Galkowski, Jan <jgalk...@akamai.com>
wrote:
I wanted to put this on the R Wiki, but found the suitable pages were
read-only. I wanted to get it out in public to save people work.
I was converting dates like "2009/03/26 01:00:00 AM" using
as.POSIXct. I
found that using a format of "%Y/%m/%d %I:%M:%S %p" did not work
correctly
to distinguish AM from PM. Both were converted into the same
timestamp.
Indeed, what I found worked was affixing a space after the string
timestamp
to produce "2009/03/26 01:00:00 AM " or "2009/03/26 01:00:00 PM ".
That
works.
Didn't see this documented in the associated pages anywhere.
I wonder if the help system might benefit from user comments like for
instance PHP has?
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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