wavethresh (version 4.6.1)

wd.dh: Compute specialized wavelet transform for density estimation

Description

Computes the discrete wavelet transform, but with zero boundary conditions especially for density estimation.

Usage

wd.dh(data, filter.number = 10, family = "DaubLeAsymm", type = "wavelet",
    bc = "periodic", firstk = NULL, verbose = FALSE)

Arguments

data

The father wavelet coefficients

filter.number

The smoothness of the underlying wavelet to use, see filter.select

family

The wavelet family to use, see filter.select

type

The type of wavelet to use

bc

Type of boundarie conditions

firstk

A parameter that originates from denproj

verbose

If TRUE then informative messages are printed.

Value

• An object of class wd, but assumed on the basis of zero boundary conditions.

Details

This is a subsidiary routine, not intended for direct user use for density estimation. The main routines for wavelet density estimation are denwd, denproj, denwr.

The input to this function should be projected father wavelet coefficients as computed by denproj, but usually supplied to this function by denwd.

Thresholding should be carried out by the user independently of these functions.

See Also

denproj, denwd