estimate.sdev {treethresh}R Documentation

Estimate noise level from wavelet coefficients

Description

estimate.sdev estimates by analysing the the wavelet coefficients at the finest level(s) of an wd or imwd object.

Usage

estimate.sdev(object, dev=mad)
estimate.sdev.wd(object, dev=mad)
estimate.sdev.imwd(object, dev=mad)

Arguments

object For extract.coefficients the wd or imwd object for which to estimate the standard error.
dev The function used to estimate the standard error. Typical examples are sd, or the more robust mad (default).
... additional arguments (see above for supported arguments).

Value

estimate.sdev returns an estimate of the standard error.

Note

estimate.dev.wd and estimate.dev.imwd should rarely be directly called by the user. The more user-friendly S3 function estimate.dev will take care of calling the right function.

For an example of the use of estimate.sdev, see coefficients.


[Package treethresh version 0.1-3 Index]