spectral analysis of time series
On Thu, 2006-10-19 at 11:59 +0200, Thomas Hoffmann wrote:
Dear List-Members, I would like to draw the amplitudes of different frequencies from a time series as shown in the attached figure. Does anybody has an idea how to do it? Best wishes Thomas
Thomas,
If your data are really like those (Foram derived \delta^{18}O
measurements?) palaeoceanographic data and are irregular in time, then
the nuSpectral package may be useful. It isn't on CRAN, but the files
and a paper in JSS about the package are available here:
http://www.jstatsoft.org/index.php?vol=11
HTH
G
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