wavBoundary {wmtsa} | R Documentation |
A wavelet transform boundary coefficient is one subject to circular filter
operations (or other boundary treatments). Conversely, the interior transform
coefficients are those that are not affected by the imposed boundary treatment.
The wavBoundary
function separates the boundary coefficients from the interior
wavelet transform coefficients.
wavBoundary(x)
x |
a DWT or MODWT transform object with class wavTransform . |
an object of class wavBoundary
.
D. B. Percival and A. T. Walden, Wavelet Methods for Time Series Analysis, Cambridge University Press, 2000.
I. Daubechies, Orthonormal Bases of Compactly Supported Wavelets, Communications on Pure and, Applied Mathematics, 41, 909–96.
wavIndex
, wavDWT
, wavMODWT
, wavShift
.
## calculate the MODWT of the sunspots series W <- wavMODWT(sunspots) ## identify the boundary coefficients z <- wavBoundary(W) ## plot the results plot(wavShift(z)) ## obtain a summary summary(z)