R help - Feb 2000 - plotting spectrum of time series etc

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.

Also, I'm running R under windows 95, and I can't seem to set the line
length of the display right. So sometimes I got an error message that's
too long and I can't read it in full. I tried options(width=??) or
.Options$width=??, they changed the values, but had no effect on the
display.

Thanks a lot!
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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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