SpherWave (version 1.2.2)

lambda.global: Global Thresholding Value

Description

This function calculates global thresholding value for spherical wavelet estimator.

Usage

lambda.global(swd, policy, nthresh, value, Q)

Arguments

swd

an object of class `swd'

policy

threshold technique. At present the possible policies are `"universal"', `"probability"', `"fdr"', `"Lorentz"' and `"sure"'.

nthresh

the number of resolution levels to be thresholded in the decomposition

value

the user supplied threshold represented by quantile level of `"probability"' policy.

Q

parameter for the false discovery rate of `"fdr"' policy.

Value

lam

global thresholding value

References

Donoho, D.~L. and Johnstone, I.~M. (1994) Ideal spatial adaptation by wavelet shrinkage. Biometrika, 81, 425--455.

Oh, H-S. (1999) Spherical wavelets and their statistical analysis with applications to meteorological data. Ph.D. Thesis, Department of Statistics, Texas A\&M University, College Station.

Oh, H-S. and Li, T-H. (2004) Estimation of global temperature fields from scattered observations by a spherical-wavelet-based spatially adaptive method. Journal of the Royal Statistical Society Ser. B, 66, 221--238.

See Also

mrs.comp.thresh.global