LS2W (version 1.3.6)

Psi1Dname: Return a PsiJ list object style name.

Description

This function returns a character string according to a particular format for naming PsiJ objects. Note that this construct is different from that used in WaveThresh as we wish to be able to differentiate between one and two-dimensional autocorrelation wavelets!

Usage

Psi1Dname(J, filter.number, family)

Value

A character string containing the name of an object according to a particular naming scheme.

Arguments

J

A negative integer representing the order of the PsiJ object.

filter.number

The index number of the wavelet used to build the PsiJ object.

family

The wavelet family used to build the PsiJ object.

Author

Idris Eckley

Details

Some of the objects computed by PsiJ take a long time to compute. Hence it is a good idea to store them and reuse them. This function generates a name according to a particular naming scheme that permits a search algorithm to easily find the matrices.

Each object has three defining characteristics: its order, filter.number and family. Each of these three characteristics are concatenated together to form a name.

This function performs exactly the same role as rmname except for objects produced by PsiJ.

References

Nason, G.P., von Sachs, R. and Kroisandt, G. (1998). Wavelet processes and adaptive estimation of the evolutionary wavelet spectrum. Technical Report, Department of Mathematics University of Bristol/ Fachbereich Mathematik, Kaiserslautern.

Eckley, I.A. and Nason, G.P. (2011). LS2W: Implementing the Locally Stationary 2D Wavelet Process Approach in R, Journal of Statistical Software, 43(3), 1-23. URL http://www.jstatsoft.org/v43/i03/.

See Also

PsiJ,Psi1Dname

Examples

#
# What's the name of the order 4 Haar PsiJ object?
#
 Psiname(-4, filter.number=1, family="DaubExPhase")
#[1] "D1Psi.4.1.DaubExPhase"
#
# What's the name of the order 12 Daubechies least-asymmetric wavelet PsiJ
# with 7 vanishing moments?
#
 Psiname(-12, filter.number=7, family="DaubLeAsymm")             
#[1] "D1Psi.12.7.DaubLeAsymm"