hf.u {haarfisz} | R Documentation

## hf.u

### Description

Denoises a Gaussian contaminated vector using wavelet thresholding with the universal threshold. Requires WaveThresh3. Also see help to `wd`, `threshold`,and `link{wr}` in WaveThresh.

### Usage

    hf.u(x, filter.number = 10, family = "DaubLeAsymm", min.level = 3, type = "hard")

### Arguments

`x` | The noisy vector, its length must be a power of 2.
`filter.number` | The filter number of the analysing wavelet. Can be set to 1, 2, ..., 10 for `family == "DaubExPhase"`, or to 4, 5, ..., 10 for `family == "DaubLeAsymm"`.
`family` | The family of wavelet bases from which the wavelet `filter.number` is chosen. Can be set to "DaubExPhase" or "DaubLeAsymm".
`min.level` | The minimum level thresholded.
`type` | Type of thresholding, can be set to hard or soft

### Value

Returns:

`est` | Denoised version of `x`.

### Author(s)

Piotr Fryzlewicz

[Package haarfisz version 4.0-2 Index]