lstseq.cart {delt} | R Documentation |

## Calculates a scale of CART histograms

### Description

Calculates a scale of CART histograms.
The histograms in the scale have partitions of growing cardinality.
Returns a sequence of estimates as piecewise constant functions and
optionally as level set trees.
Optionally a shape tree for a level set of each estimate is calculated.

### Usage

lstseq.cart(treeseq, maxleaf=NULL, lstree=NULL, level = NULL,
indvec = NULL)

### Arguments

`treeseq` |
output of function "prune" |

`maxleaf` |
the maximal cardinality of the partitions of the histograms
in the sequence |

`lstree ` |
if NULL, then level set trees are not calculated |

`level` |
if NULL, then shape trees are not calculated;
if positive number, then it is
the level of the level sets for which the shape trees are calculated |

`indvec` |
a vector of indeces;
chooses a subset of the complete sequence of subhistograms
of the overfitting histogram |

### Value

A list with components

`lstseq` |
a list of level set trees |

`pcfseq` |
a list of piecewise constant functions |

`stseq` |
a list of shape trees |

`hseq` |
a vector of smoothing parameters corresponding to the members
in the sequences;
the smoothing parameter is the cardinality of the partition |

### Author(s)

Jussi Klemela

### See Also

`densplit`

,
`prune`

### Examples

dendat<-sim.data(n=200,seed=1,type="mulmodII")
et<-densplit(dendat)
treeseq<-prune(et)
estiseq<-lstseq.cart(treeseq,maxleaf=20,lstree=TRUE)
mt<-modegraph(estiseq)
plotmodet(mt)
#scaletable(estiseq)

[Package

*delt* version 0.8.0

Index]