season (version 0.2-6)

peri: 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.

Examples

data(CVD)
peri(CVD$cvd)