Aintmap {interval}R Documentation

Create A matrix and intmap

Description

The A matrix is an n by k matrix of zeros and ones, where each row represents one of n failure times, and each column represents a possible interval for the nonparametric maximum likelihood estimate (NPMLE). The function Aintmap creates an A matrix and associated intmap from left and right intervals (L and R) which may not may not include the boundary of the interval (using Lin or Rin). The matrix intmap denotes the intervals of the potential jumps in the distribution of the NPMLE, and its attribute LRin denotes whether to include each of the intervals or not. Called by icfit.

Usage

Aintmap(L,R,Lin=NULL,Rin=NULL)

Arguments

L numeric vector of left endpoints of censoring interval
R numeric vector of right endpoints of censoring interval
Lin logical vector, should L be included in the interval? (see details)
Rin logical vector, should R be included in the interval? (see details)

Value

A list with two objects:

A an n by k matrix of 0 and 1s
intmap the associated intmap

See Also

Called from icfit and ictest

Examples

Aintmap(c(2,3,3,7),c(3,5,5,8),Lin=c(FALSE,TRUE,FALSE,FALSE),Rin=c(TRUE,FALSE,TRUE,FALSE))

[Package interval version 0.7-5.5 Index]