[R] Preparing timestamped data for fourier analysis

[Earl F. Glynn]

"Milos Zarkovic" <mzarkov at EUnet.yu> wrote in message
news:001401c5705e$6a548d50$0201a8c0 at milos...
> I believe that FFT is not appropriate. However Lomb-Scargle periodogram
> could be used.

This may interest you:

(Preprint of  submitted paper)
Detecting periodic patterns in unevenly spaced gene expression time series
using Lomb-Scargle periodograms.
http://research.stowers-institute.org/bioinfo/PDF/m2005_lomb-scargle_submitted.pdf

R code here
http://research.stowers-institute.org/efg/2005/LombScargle/

efg