peri function

Periodogram

Estimated periodogram using the fast Fourier transform (fft).

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).

Returns

• 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)
p = peri(CVD$cvd)

Author(s)

Adrian Barnett a.barnett@qut.edu.au