Thank you for your responses but I think whith some examples the problem will
be better understated.
Ok, here it is an example of how the data looks like to allow a better
understanding of the problem.
Dframe1 <- data.frame(sunrise = seq(as.POSIXct("2010-07-14
06:05:25"),as.POSIXct("2010-07-20 06:05:25"),by="day"),sunset=
seq(as.POSIXct("2010-07-14 18:00:00"),as.POSIXct("2010-07-20
18:00:00"),by="day"))
Dframe2 <- data.frame(Logtime = seq(as.POSIXct("2010-07-14
06:05:25"),as.POSIXct("2010-07-20 06:05:25"),by="hour"),
temp = runif(145, -5, 15))
What I’m interested on is rows from the Dframe2 during the day, and for that
I need (I think) a loop to see if each Logtime occurred during the day or
night.
Cheers
Patrao
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