wavethresh: drawwp.default – R documentation

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wavethresh

drawwp.default

Subsidiary routine that actually computes wavelet packet values

Description

Function computes the values of a given wavelet packet on a discrete grid.

Usage

drawwp.default(level, index, filter.number = 10, family = "DaubLeAsymm",
    resolution = 64 * 2^level)

Arguments

`level`	The resolution level of the packet you want
`index`	The packet index of the packet you want
`filter.number`	The type of wavelet you want, see `filter.select`
`family`	The family of wavelet you want, see `filter.select`
`resolution`	The number of ordinates at which you want the wavelet packet

Details

Function works by computing a wavelet packet transform of a zero vector. Then inserting a single one somewhere in the desired packet, and then inverts the transform.

Value

A vector containing the "y" values of the required wavelet packet.

Author(s)

G P Nason