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