Hi,
I'm a bit confused how julian() works. If I understand right, it returns
the number of days since the origin.
I have a vector:
> SLDATX[1:10]
[1] "1986-01-06" "1986-01-17" "1986-02-02" "1986-02-04"
[5] "1986-02-04" "1986-02-21" "1986-03-06" "1986-03-25"
[9] "1986-04-06" "1986-04-10"
And when I did:
> TIMESOLD <- as.numeric(julian(as.POSIXlt(SLDATX),
+ origin = as.POSIXct("1986-01-01", "")))
I got:
> TIMESOLD[1:10]
[1] 5.00000 16.00000 32.00000 34.00000 34.00000 51.00000
[7] 64.04167 83.04167 95.04167 99.04167
THe first 6 values from TIMESOLD is obvious, however I'm not sure why I
got decimals from the 7th value, as my input vector does not have any
specific "times" after the dates.
Any insights would be greatly appreciated...;-D
--
Cheers,
Kevin
---------------------------------------------------------------
"Try not. Do, do! Or do not. There is no try"
Jedi Master Yoda
----
Ko-Kang Kevin Wang, MSc
SLC STATS 10x Workshop Coordinator
University of Auckland
New Zealand
Homepage: http://www.stat.auckland.ac.nz/~kwan022
Ph: 373-7599 x88475
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