[R] plotting spectrum of time series etc

[Ben Bolker]

library(ts)
x <- runif(256)
spectrum(x)

works for me, as do the examples in the help file.
  What is "seriesa"?  Can you give us a slightly more complete snippet of
code that produces the problem? spectrum() might not work when applied to
data frames -- have you tried spectrum(as.vector(seriesa))?

On Tue, 1 Feb 2000 zj at expert.cc.purdue.edu wrote:

> Hi, everyone, I tried to use "spectrum()" or "spec.pgram()" to get a
> periodogram of a time series but they didn't work.
> Even the examples given in the help file didn't work (all with the same
> error message, below). And the 'ts'ibrary was
> loaded with "library(ts)" or "library("ts"). I also tried
> library(tseries) but got the same problem. Could anyone please
> give me some help with this?
> 
> > spectrum(seriesa)
> Error in plot.spec(spg.out, ...) : binary operator applied to invalid
> types.
> 

-- 
Ben Bolker                                  bolker at zoo.ufl.edu
Zoology Department, University of Florida   http://www.zoo.ufl.edu/bolker
318 Carr Hall/Box 118525                    tel: (352) 392-5697
Gainesville, FL 32611-8525                  fax: (352) 392-3704

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