R: Reconstruction from a Ridge

ridrec {Rwave} | R Documentation

## Reconstruction from a Ridge

### Description

Reconstructs signal from sample of a ridge, in the wavelet case.

### Usage

    ridrec(cwtinput, node, phinode, noct, nvoice, Qinv, epsilon, np,
    w0=2 * pi, check=FALSE, real=FALSE)

### Arguments

`cwtinput` | wavelet transform, output of `cwt`.
`node` | time coordinates of the ridge samples.
`phinode` | scale coordinates of the ridge samples.
`noct` | number of octaves (powers of 2).
`nvoice` | number of different scales per octave.
`Qinv` | inverse of the matrix Q of the quadratic form.
`epsilon` | coefficient of the Q_2 term in reconstruction kernel
`np` | number of samples of the reconstructed signal.
`w0` | central frequency of Morlet wavelet.
`check` | if set to TRUE, computes `cwt` of reconstructed signal.
`real` | if set to TRUE, uses only constraints on the real part of the transform.

### Value

Returns a list containing the reconstructed signal and the chained ridges.

`sol` | reconstruction from a ridge
`A` | <wavelets,dualwavelets> matrix
`lam` | coefficients of dual wavelets in reconstructed signal.
`dualwave` | array containing the dual wavelets.
`morvelets` | array of morlet wavelets located on the ridge samples.
`solskel` | wavelet transform of sol, restricted to the ridge
`inputskel` | wavelet transform of signal, restricted to the ridge

### References

See discussions in the text of “Practical Time-Frequency Analysis”.

### See Also

`sridrec`, `regrec`, `regrec2`.

[Package Rwave version 2.5-0 Index]