heav {CVThresh} | R Documentation |
Heavisine function
Description
This function generates Heavisine function values for equally spaced points in
.
Usage
heav(norx=1024)
Arguments
norx |
the number of data or x values in [0, 1] |
Details
Heavisine function is introduced by Donoho and Johnstone (1994) and is useful test function evaluating a wavelet shrinkage method.
Value
Heavisine function values and its variability
where
.
References
Donoho, D.L. and Johnstone, I.M. (1994) Ideal spatial adaptation by wavelet shrinkage. Biometrika, 81, 425–455.
See Also
Examples
testheav <- heav(1024)
plot(testheav$x, testheav$meanf, xlab="", ylab="",
main="Plot of Heavisine function", type="l")
[Package CVThresh version 1.1.2 Index]