R: Crazy Climbers Reconstruction by Penalization

crcrec {Rwave} | R Documentation

## Crazy Climbers Reconstruction by Penalization

### Description

Reconstructs a real valued signal from the output of `crc` (wavelet case) by minimizing an appropriate quadratic form.

### Usage

    crcrec(siginput, inputwt, beemap, noct, nvoice, compr, minnbnodes=2,
    w0=2 * pi, bstep=5, ptile=0.01, epsilon=0, fast=FALSE, para=5, real=FALSE,
    plot=2)

### Arguments

`siginput` | original signal.
`inputwt` | wavelet transform.
`beemap` | occupation measure, output of `crc`.
`noct` | number of octaves.
`nvoice` | number of voices per octave.
`compr` | compression rate for sampling the ridges.
`minnbnodes` | minimal number of points per ridge.
`w0` | center frequency of the wavelet.
`bstep` | size (in the time direction) of the steps for chaining.
`ptile` | relative threshold of occupation measure.
`epsilon` | constant in front of the smoothness term in penalty function.
`fast` | if set to TRUE, uses trapezoidal rule to evaluate $Q_2$.
`para` | scale parameter for extrapolating the ridges.
`real` | if set to TRUE, uses only real constraints.
`plot` | 1: displays signal,components,and reconstruction one after another. 2: displays signal, components and reconstruction.

### Details

When ptile is high, boundary effects may appeare. para controls extrapolation of the ridge.

### Value

Returns a structure containing the following elements:

`rec` | reconstructed signal.
`ordered` | image of the ridges (with different colors).
`comp` | 2D array containing the signals reconstructed from ridges.

### See Also

`crc`, `cfamily`, `scrcrec`.

[Package Rwave version 2.5-0 Index]