TABLE OF CONTENTS

splineUtils/evalBinte [ Functions ]

NAME

    evalBinte --- compute the integrals of each spline basis function

FUNCTION

The set of spline basis functions are defined entirely by the set of knots and the order of the spline. This function computes the integral of each of those basis functions, which is used for normalizing the frailty basis splines and for computing cumulative integrals for the hazard.

SYNOPSIS

1440 evalBinte <- function(knots, ord)

INPUTS

    knots  a set of spline knots as produced by makeknots
    ord    integer order of the spline

OUTPUTS

    a vector containing the integral over each spline basis function

SOURCE

1443 {
1444     K <- sum(knots > attr(knots, "b")[1] & knots < attr(knots, "b")[2])
1445     Binte <- rep(0, K + ord)
1446     for(j in 1:(K + ord)){
1447         Binte[j] <- (knots[ki(knots, j)] - knots[ki(knots, j - ord)]) / ord
1448     }
1449     return(Binte)
1450 }