Boundary and interior wavelet coefficient identification.
USAGE:
wavIndex( x )
DESCRIPTION:
The boundary wavelet and scaling coefficients are those subject to circular
filtering operations. This function returns the range of indices which span the
interior (or nonboundary) wavelet and scaling coefficients. If approximate zero
phase filters are used in the wavelet trsnsform input then the shift factors
needed to bring the coefficients to (approximate) zero phase are also returned.
REQUIRED ARGUMENTS:
x
An object of class WaveletTransform or WaveletBoundary.
VALUE:
result
A list the indices locating the interior and boundary coefficients as well as
the the zero phase shift factors need for each level of the transform.
REFERENCES:
(1) D. B. Percival and A. T. Walden, ``Wavelet Methods for Time Series Analysis'',
Cambridge University Press, 2000.
SEE ALSO:
,
,
.
EXAMPLES:
## calculate the coefficient indices for a MODWT
## of a simple time series
wavIndex( wavMODWT( 1:8, wavelet = "s8" ) )