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 -------------- next part -------------- A non-text attachment was scrubbed... Name: milankovich.pdf Type: application/pdf Size: 93605 bytes Desc: not available Url : https://stat.ethz.ch/pipermail/r-help/attachments/20061019/e1b1e941/attachment.pdf
Thomas Hoffmann <thomas.hoffmann at uni-bonn.de> writes:> 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?Have a look at par(ask=T) ; example(spectrum) help(spectrum) -- O__ ---- Peter Dalgaard ?ster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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 > ThomasThomas, 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 -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Gavin Simpson [t] +44 (0)20 7679 0522 ECRC & ENSIS, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%