WaveThresh Help

threshold

Threshold coefficients

DESCRIPTION

Modify coefficients by thresholding or shrinkage.

This function is generic.

Particular methods exist for the following objects:

wd object: the threshold.wd function is used;
imwd object: the threshold.imwd function is used;
imwdc object: the threshold.imwdc function is used;
irregwd object: the threshold.irregwd function is used;
wd3D object: the threshold.wd3D function is used;
wp object: the threshold.wp function is used;
wst object: the threshold.wst function is used.

USAGE

threshold(x, ...)

REQUIRED ARGUMENTS

x: the object that you wish to threshold

OPTIONAL ARGUMENTS

...: methods may have additional arguments.

VALUE

Usually a copy of the input object but containing thresholded or shrunk coefficients.

DETAILS

See individual method help pages for operation and examples.

There is another thresholding function Cthreshold that performs thresholding of a wd object. It is not normally recommended to use Cthreshold since the threshold function supplies a vastly greater range of options. Much of the threshold actual thresholding is fast since it is vectorized but Cthreshold might be sometimes faster as it is simpler.