wavIndex {wmtsa} | R Documentation |
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.
wavIndex(x)
x |
an object of class |
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.
D. B. Percival and A. T. Walden, Wavelet Methods for Time Series Analysis, Cambridge University Press, 2000.
## calculate the coefficient indices for a MODWT ## of a simple time series wavIndex(wavMODWT(1:8, wavelet="s8"))