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Rwave (version 1.2)

mntrim: Trim Dyadic Wavelet Transform Extrema

Description

Trimming of dyadic wavelet transform local extrema, assuming normal distribution.

Usage

mntrim(extrema, scale=FALSE, prct=0.95)

Arguments

extrema
dyadic wavelet transform extrema (output of ext).
scale
when set, the wavelet transform at each scale will be plotted with the same scale.
prct

Value

  • Structure containing
  • originaloriginal signal.
  • extrematrimmed extrema representation.
  • Sfcoarse resolution of signal.
  • maxresolnnumber of decomposition scales.
  • npsize of signal.

Details

The distribution of extrema of dyadic wavelet transform at each scale is generated by simulation, assuming a normal distribution, and the 95% critical value is used for thresholding the extrema of the signal.

References

See discussions in the text of ``Practical Time-Frequency Analysis''.

See Also

mbtrim, mrecons, ext.