power.spec: Power Spectral Density

In aaronlikens/framediff: Performs a simple frame differencing algorithm

Description

Estimates normalized power spectral density of a time series

Usage

power.spec(x, hz = 1, use.period = FALSE,
center = FALSE, detrend = FALSE, pad = TRUE,
logxy = FALSE, do.plot = TRUE, graph.par = NULL)

Arguments

x	a real valued time series
hz	the sampling rate in Hz, default = 1
use.period	logical indicating whether power should be given in terms of period (s) instead of frequency (hz)
center	logical indicating whether series should be centered
detrend	logical indicating whether linear trend should be removed
pad	logical indicating whether zero padding should be applied
logxy	should frequency and power be returned in log10 units?
do.plot	logical indicating whether plot should be generated. if logxy = TRUE, plot will also be in log units.
graph.par	a list comtaining additional graphical parameters to use for plotting. The default is NULL

Value

returns normalized power spectrum

Examples

tt = (1:1000)/29.97
sintt = sin(2*pi*tt*3)
ps = power.spec(sintt, hz = 29.97,use.period = FALSE, center = TRUE, detrend = FALSE,
 pad = TRUE, logxy = FALSE, do.plot = TRUE)

aaronlikens/framediff documentation built on May 24, 2019, 8:51 a.m.