locpol (version 0.8.0)

PRDenEstC: Parzen--Rosenblatt denstiy estimator.

Description

Parzen--Rosenblat univariate density estimator.

Usage

PRDenEstC(x, xeval, bw, kernel, weig = rep(1, length(x)))

Value

Returns an (x,den) data frame.

x

Evaluation points.

den

Density at each x point.

Arguments

x

vector with data points.

xeval

Vector of evaluation points.

bw

Smoothing parameter, bandwidth.

kernel

Kernel used to perform the estimation, see Kernels

weig

Vector of weights for observations.

Author

Jorge Luis Ojeda Cabrera.

Details

Simple Parzen--Rosenblat univariate density estimation, computed using definition.

References

Fan, J. and Gijbels, I. Local polynomial modelling and its applications\/. Chapman & Hall, London (1996).

Wand, M.~P. and Jones, M.~C. Kernel smoothing\/. Chapman and Hall Ltd., London (1995).

See Also

density, that uses FT to compute a kernel density estimator, bkde from package KernSmooth for a binned version, and bw.nrd0, dpik, denCVBwSelC for bandwidth selection.

Examples

	N <- 100
	x <-  runif(N)
	xeval <- 0:10/10
	b0.125 <- PRDenEstC(x, xeval, 0.125, EpaK)
	b0.05 <- PRDenEstC(x, xeval, 0.05, EpaK)
	cbind(x = xeval, fx = 1, b0.125 = b0.125$den, b0.05 = b0.05$den)