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Psiname

Return a PsiJ list object style name.

DESCRIPTION

This function returns a character string according to a particular format for naming PsiJ objects.

USAGE

Psiname(J, filter.number, family)

REQUIRED 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.

OPTIONAL ARGUMENTS

None.

VALUE

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

SIDE EFFECTS

None

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.

RELEASE

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.

EXAMPLES

#
# What's the name of the order 4 Haar PsiJ object?
#
> Psiname(-4, filter.number=1, family="DaubExPhase")
[1] "Psi.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] "Psi.12.7.DaubLeAsymm"