Macmat {Icens}R Documentation

A function to compute the incidence matrix for an intersction graph.

Description

Returns the Petrie matrix and Petrie pairs of an interval order given its list of maximal antichains. These can be obtained from Maclist.

Usage

Macmat(ml)

Arguments

ml A list containing the maximal cliques of the intersection graph of the data.

Details

Not worth mentioning?

Value

A list containing two components.

pmat The Petrie or clique matrix of the underlying interval order.
ppairs The Petrie pairs for each observation. These indicate the first and last maximal clique occupied by the observation.

Author(s)

Alain Vandal and Robert Gentleman

References

Computational Methods for Censored Data using Intersection Graphs, R. Gentleman and A. Vandal, JCGS, 2000.

See Also

Maclist

Examples

   data(cosmesis)
   csub1 <- subset(cosmesis, subset=Trt==0, select=c(L,R))
   ml1 <- Maclist(csub1)
   mm1 <- Macmat(ml1)

[Package Icens version 0.5 Index]