peri {season}

Periodogram

Description

Estimated periodogram using the fast Fourier transform (fft).

Usage

peri(data, adjmean = TRUE, plot = TRUE)

Arguments

data

a data frame.

adjmean

subtract the mean from the series before calculating the periodogram (default=TRUE).

plot

plot the estimated periodogram (default=TRUE).

Value

peri

periodogram, I(\omega).

f

frequencies in radians, \omega.

c

frequencies in cycles of time, 2\pi/\omega.

amp

amplitude periodogram.

phase

phase periodogram.

Author(s)

Adrian Barnett [e-mail]

Examples

data(CVD)
p = peri(CVD$cvd)