flexmix (version 0.9-0)

FLXmclust: FlexMix Clustering Demo Driver

Description

This is a demo driver for flexmix implementing model-based clustering of Gaussian data.

Usage

FLXmclust(formula = . ~ ., diagonal = TRUE)
plotEll(object, data, ...)

Arguments

formula

A formula which is interpreted relative to the formula specified in the call to flexmix using update.formula. Only the left-hand side (respons

diagonal

If TRUE, then the covariance matrix of the components is restricted to diagonal matrices.

object

An object of class flexmix using FLXmclust model.

data

The data that were clustered.

...

Passed to eqscplot.

Value

• FLXmclust returns an object of class FLXmodel.

Details

This is meant as a demo for FlexMix driver programming, use package mclust for real applications.

See Also

flexmix

Examples

data(Nclus)

require("MASS")
eqscplot(Nclus)

## This model is wrong (one component has a non-diagonal cov matrix)
ex1 <- flexmix(Nclus~1, k=4, model=FLXmclust())
print(ex1)
plotEll(ex1, Nclus)

## True model, wrong number of components
ex2 <- flexmix(Nclus~1, k=6, model=FLXmclust(diag=FALSE))  
print(ex2)

plotEll(ex2, Nclus)

parameters(ex2, component=1)