peri: Periodogram

In season: Seasonal Analysis of Health Data

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)

season documentation built on Aug. 21, 2025, 5:59 p.m.