data(lh) time serie parameters
On Sun, Mar 30, 2008 at 5:52 AM, Jean lobry
<lobry at biomserv.univ-lyon1.fr> wrote:
Dear all, I'm confused by the time serie parameters in data(lh) : sueoka:~ lobry$ R --vanilla --quiet
tsp(lh)
[1] 1 48 1 because documentation says: QUOTE A regular time series giving the luteinizing hormone in blood samples at 10 mins intervals from a human female, 48 samples. UNQUOTE So that I would expect the time serie to end at 480 minutes or 8 hours. Shouldn't we have something like:
tsp(lh) <- c(10, 480, 0.1) # in Minutes
or
tsp(lh) <- c(1/6, 8, 6) # in Hours
It seems they are using 10 minutes as the unit of measurement. If you wish to change it to hours you might want to use this instead: lh.hr <- ts(lh, start = 0, frequency = 6) so that cycle(lh.hr) starts out at 1.