NWW {survivalREC}

Nadaraya-Watson weights

Description

Computes the Nadaraya-Watson weights.

Usage

NWW(covariate, x, kernel = "gaussian", bw)

Arguments

covariate

Covariate values for obtaining weights.

x

Covariate value to compute the weight at.

kernel

A character string specifying the desired kernel. See details below for possible options. Defaults to "gaussian" where the gaussian density kernel will be used.

bw

A single numeric value to compute a kernel density bandwidth.

Details

Possible options for argument window are "gaussian", "epanechnikov", "tricube", "boxcar", "triangular", "quartic" or "cosine".

Value

A vector with Nadaraya-Watson weights.

Author(s)

Gustavo Soutinho and Luis Meira-Machado

Examples

b3state<-multidf(gap1=bladder4state$y1, event1=bladder4state$d1, 
                 gap2=bladder4state$y2, status=bladder4state$d2, 
                 size=bladder4state$size)
                 
obj0 <- b3state[[1]]

NWW(covariate = obj0$size, x=3, kernel = "gaussian", bw = 3)