What's wrong with z <- spec.pgram(ldeaths, plot = FALSE) plot(1/z$freq, z$spec, log="y", xlab="period", ylab="power")
? On Tue, 31 Jan 2006, Tom C Cameron wrote: > Hi Spencer, yes thanks it does help. In short I have resolved the issue. > > In length, not directly, as I have not found a way to ask R to actually > plot frequency vs. period directly, That's the 1/x function, so I am sure you can manage that. I presume you want power vs period? > I have scoured the R help pages and Venebles & > Ripley but the call to R "spectrum()" or "periodogram()" generates error > messages if I try to enhance or change the plot! There is no periodogram() function in R. > I did find that you can install the library packages "growth" and "rmutil" and > then use the function "pergram" that gives you the output of the PSD in a > matrix which I have then transformed to give me the period (1/frequency). -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-help@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
