lambda.global {SpherWave} | R Documentation |
This function calculates global thresholding value for spherical wavelet estimator.
lambda.global(swd, policy, nthresh, value, Q)
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. |
lam |
global thresholding value |
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.