View source: R/Crazy_Climbers.R

cfamily | R Documentation |

Chains the ridge estimates produced by the function `crc`

.

cfamily(ccridge, bstep=1, nbchain=100, ptile=0.05)

`ccridge` |
unchained ridge set as the output of the function |

`bstep` |
maximal length for a gap in a ridge. |

`nbchain` |
maximal number of chains produced by the function. |

`ptile` |
relative threshold for the ridges. |

`crc`

returns a measure in time-frequency (or time-scale)
space. `cfamily`

turns it into a series of one-dimensional
objects (ridges). The measure is first thresholded, with a relative
threshold value set to the input parameter ptile. During the chaining
procedure, gaps within a given ridge are allowed and filled in. The
maximal length of such gaps is the input parameter bstep.

Returns the results of the chaining algorithm

`ordered map` |
image containing the ridges (displayed with different colors) |

`chain` |
2D array containing the chained ridges, according to the chain data
structure |

`nbchain` |
number of chains produced by the algorithm |

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

`crc`

for the ridge estimation, and `crcrec`

,
`gcrcrec`

and `scrcrec`

for corresponding
reconstruction functions.

## Not run: data(HOWAREYOU) plot.ts(HOWAREYOU) cgtHOWAREYOU <- cgt(HOWAREYOU,70,0.01,100) clHOWAREYOU <- crc(Mod(cgtHOWAREYOU),nbclimb=1000) cfHOWAREYOU <- cfamily(clHOWAREYOU,ptile=0.001) image(cfHOWAREYOU$ordered > 0) ## End(Not run)

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