[R] time series-V+R
ben at zoo.ufl.edu
Tue Nov 6 18:57:33 CET 2001
Have you looked at the online R complements?
Although R and S-PLUS have similar functionality, this is one place
where the cosmetic details are somewhat different.
As it turns out, the logarithmic confidence intervals are constant for
spectra, so they *are* the same for all frequencies. (I don't know how
much detail V&R provide, since my copy is 5000 miles away, but I'm sure
they at least give references.)
On Tue, 6 Nov 2001, Brian Scholl wrote:
> I tried to follow the code in Venables + Ripley
> regarding time series. When I compute the
> periodogram, no confidence intervals are spit out as
> per the book, and none are drawn on the figure.
> Actually, I don't even really understand what the
> intervals printed in the book relate to, the interval
> ranges should be different at different cycles. How do
> I get them on the graph, and also get the values as a
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