Is there any way to apply a spectra or periodogramm to my time series. My first problem is, that I do not know how to get a spectra/periodogramm for my data. I have found time series tools but nothing for spectral analysis. My second problem: The time series function I have found, wanted a discrete timeline, but my timeline is continious. Kind regards Martin Albers
?spectrum ?spec.ar Martin Albers wrote:> Is there any way to apply a spectra or periodogramm to my time series. > > My first problem is, that I do not know how to get a spectra/periodogramm for my data. > > I have found time series tools but nothing for spectral analysis. > > My second problem: The time series function I have found, wanted a discrete timeline, but my timeline is continious. > > Kind regards > > Martin Albers > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >-- ====Por favor, si me mandas correos con copia a varias personas, pon mi direcci?n de correo en copia oculta (CCO), para evitar que acabe en montones de sitios, eliminando mi privacidad, favoreciendo la propagaci?n de virus y la proliferaci?n del SPAM. Gracias. ----- If you send me e-mail which has also been sent to several other people, kindly mark my address as blind-carbon-copy (or BCC), to avoid its distribution, which affects my privacy, increases the likelihood of spreading viruses, and leads to more SPAM. Thanks. =====
You cannot observe a time series in continuous time. So either you have regularly spaced observations (and see ?spectrum), or irregular ones (and there may be something in one of the packages for irregular time series, but there is no support in R itself). On Tue, 28 Mar 2006, Martin Albers wrote:> Is there any way to apply a spectra or periodogramm to my time series. > > My first problem is, that I do not know how to get a > spectra/periodogramm for my data. > > I have found time series tools but nothing for spectral analysis. > > My second problem: The time series function I have found, wanted a > discrete timeline, but my timeline is continious.-- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595