Dear All,
what determines if a difference between POSIXct objects gets
expressed in days or seconds?
In the following example, it's sometimes seconds, sometimes days.
as.POSIXct('2009-09-01') - as.POSIXct(NA)
Time difference of NA secs
c(as.POSIXct('2009-09-01'), as.POSIXct(NA)) -
c(as.POSIXct('2009-09-01'), as.POSIXct('2009-08-31'))
Time differences in secs
[1] 0 NA
c(as.POSIXct('2009-09-01'), as.POSIXct(NA)) -
as.POSIXct('2009-08-31')
Time differences in days
[1] 1 NA
Thanks,
Heinz
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