R: Irregular wavelet decomposition objects.

irregwd.objects {wavethresh} | R Documentation

## Irregular wavelet decomposition objects.

### Description

These are objects of classes

`wd`

They represent a decomposition of a function with respect to a wavelet basis. The function will have been interpolated to a grid and these objects represent the discrete wavelet transform `wd`.

### Details

To retain your sanity the C and D coefficients should be extracted by the `accessC` and `accessD` functions and inserted using the `putC` and `putD` functions (or more likely, their methods), rather than by the `$` operator.

One can use the `accessc` function to obtain the `c` component.

Mind you, if you want to muck about with coefficients directly, then you'll have to do it yourself by working out what the fl.dbase list means (see `first.last` for a description.)

### GENERATION

This class of objects is returned from the `irregwd` function. Some other functions that process these kinds of objects also return this class of object (such as `threshold.irregwd`.)

### METHODS

The `irregwd` class of objects has methods for the following generic functions: `plot`, `threshold`,

### STRUCTURE

All components in a legitimate ‘irregwd’ are identical to the components in an ordinary `wd.object` with the exception of `type` component and with the addition of the following component:

c

  vector that aids in the calculation of variances of wavelet coefficients (used by `threshold.irregwd`).

### RELEASE

Version 3.9.4 Copyright Arne Kovac 1997, Help Copyright Guy Nason 2004

### Author(s)

G P Nason

### See Also

`irregwd`, `threshold.irregwd`, `plot.irregwd`,`wd`

[Package wavethresh version 4.6.8 Index]