delt (version 0.8.2)

lstseq.greedy: Calculates a scale of greedy histograms

Description

Calculates a scale of greedy histograms. The histograms in the scale have a partition 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.greedy(dendat, maxleaf, lstree = NULL, level = NULL)

Arguments

dendat

n*d data matrix

maxleaf

integer>1; the scale consists of histograms whose partitions have cardinality 1,...,maxleaf

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

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

See Also

eval.greedy,

Examples

library(denpro)
dendat<-sim.data(n=100,seed=1,type="mulmodII")
estiseq<-lstseq.greedy(dendat,maxleaf=20,lstree=TRUE)

mt<-modegraph(estiseq)

plotmodet(mt)

#scaletable(estiseq)