condno: condno
In nunesmatt/adlift: An Adaptive Lifting Scheme Algorithm

Description Usage Arguments Details Value Note Author(s) Examples

This function uses a specified norm to compute the condition number of a matrix representation of a wavelet transform.

1	condno(W, type)

`W`	a matrix which represents a wavelet transform.
`type`	a character string denoting which norm to use when computing the condition number. Possible values are "l1", or one of the standard norm types, "F" (Frobenius norm), "i" (infinity norm), "m" (max modulus of a matrix) or "1" (1-norm).

The function computes the condition number as condno = ||W||*||W^{-1}||.

condno

the condition number of the matrix W.

The matrix W must be invertible.

Matt Nunes (nunesrpackages@gmail.com), Marina Knight

#create test signal data
#
x<-runif(100)
y<-make.signal2("blocks",x=x)
#
a<-fwtnp(x,y,LocalPred=AdaptNeigh,neigh=2,do.W=TRUE,varonly=FALSE)
#
#computes the transition matrix for the specified options
#
W<-a$W
#
condno(W,"F")
#
condno(W,"l1")
#
condno(W,"1")
#