| InvBasis.wp {wavethresh} | R Documentation |
Invert a wp library representation with a particular basis spec
Description
Inverts a wp basis representation with a given basis specification,
for example an output from the MaNoVe function.
Usage
## S3 method for class 'wp'
InvBasis(wp, nvwp, pktlist, verbose=FALSE, ...)
Arguments
wp |
The wavelet packet object you wish to invert. |
nvwp |
A basis specification in the format of a node vector (wp) object,
obtained, eg by the |
pktlist |
Another way of specifying the basis. If this argument is
not specified then it is generated automatically from the
|
verbose |
If TRUE then informative messages are printed. |
... |
Other arguments, not used |
Details
Objects arising from a wp.object specification
are a representation of a signal with respect to a library
of wavelet packet basis functions.
A particular basis specification can be obtained
using the numtonv function which can pick an indexed
basis function, or MaNoVe.wp which uses the
Coifman-Wickerhauser minimum entropy method to select a basis.
This function takes a wp.object and
a particular basis description (in a nv.object node vector
object) and inverts the representation with respect to that selected basis.
The function can alternatively take a packet list pktlist
specification which
overrides the node vector if supplied. If the pktlist is missing
then one is generated internally from the nvwp object using the
print.nvwp function.
Value
The inverted reconstruction
Author(s)
G P Nason
See Also
InvBasis,MaNoVe.wp,numtonv,print.nvwp,wp
Examples
#
# The example in InvBasis.wst can be used here, but replaced wst by wp
#