Computation of the cone of influence

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Description

Wavelet transformation of a time series includes padding with zeros at the edges. This function determines the spectrum borders influenced by edge effects.

This code has been developed by Huidong Tian (archived R package WaveletCo).

Usage

1
COI(start = start, dt = dt, nc = nc, nr = nr, Period = Period)

Arguments

start

starting value (in time units) at the time axis

dt

time resolution, i.e. sampling resolution on time domain

nc

number of columns/time steps

nr

number of rows/scales

Period

the Fourier periods (in time units)

Value

a list with the following elements:

x, y : coordinates of the cone of influence
axis.1, axis.2 : the axes for plotting purpose

Author(s)

Code developed by Huidong Tian.

References

Tian, H., and Cazelles, B., 2012. WaveletCo. Available at http://cran.r-project.org/src/contrib/Archive/WaveletCo/, archived April 2013; accessed July 26, 2013.

See Also

analyze.wavelet, analyze.coherency, wt.image, wc.image

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