Hello,
?DateTimeClasses states that "one can add or subtract a number of
seconds or a 'difftime' object from a date-time object, but not add two
date-time objects."
So, is the below expected behavior?
> x <- Sys.time()
> x
[1] "2007-02-21 16:19:56 CST"
> x + as.difftime("1","%H")
[1] "2007-02-21 16:19:57 CST"
Warning message:
Incompatible methods ("+.POSIXt", "Ops.difftime") for "+"
"+.POSIXt" does behave as expected, though:
> "+.POSIXt"(x,as.difftime("1","%H"))
[1] "2007-02-21 17:19:56 CST"
> R.version
_
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status Under development (unstable)
major 2
minor 5.0
year 2007
month 01
day 07
svn rev 40398
language R
version.string R version 2.5.0 Under development (unstable) (2007-01-07
r40398)
Jeff
--
http://biostat.mc.vanderbilt.edu/JeffreyHorner
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