row_index {MCARtest}

A function indexing the rows of A

Description

A map from the observation space to an index set.

Usage

row_index(bS, M, S, xS)

Arguments

bS

A binary matrix specifying the set of observation patterns. Each row encodes a single pattern.

M

A vector of positive integers giving the alphabet sizes of the discrete variables.

S

An integer indicating which observation pattern is of interest.

xS

An element of the observation space of the specified observation pattern.

Value

A positive integer no larger than the cardinality of the joint space uniquely identifying x.

Examples

bS=matrix(c(1,1,0, 1,0,1, 0,1,1),byrow=TRUE,ncol=3)
M=c(2,2,2)
row_index(bS,M,1,c(1,1))
row_index(bS,M,2,c(1,1))
row_index(bS,M,3,c(1,1))

bS=matrix(c(1,1,0, 1,0,1, 0,1,1),byrow=TRUE,ncol=3)
M=c(4,3,2)
row_index(bS,M,1,c(1,1))
row_index(bS,M,1,c(2,1))
row_index(bS,M,1,c(3,1))
row_index(bS,M,1,c(4,1))
row_index(bS,M,1,c(1,2))
row_index(bS,M,1,c(2,2))