# fig11_4

## PURPOSE

Local Regression and Likelihood, Figure 11.4.

## SYNOPSIS

This is a script file.

## DESCRIPTION

     Local Regression and Likelihood, Figure 11.4.
     Author: Catherine Loader

     Local Adaptive Smooth - Dopler example.

     NEED: Improve plot - curve is hard to see.

## CROSS-REFERENCE INFORMATION

This function calls:

- lfplot Plot (for one or two dimensions) a locfit() fit.
- locfit Smoothing noisy data using Local Regression and Likelihood.

This function is called by:

- runbook

## SOURCE CODE

    0001 % Local Regression and Likelihood, Figure 11.4.
    0002 % Author: Catherine Loader
    0003 %
    0004 % Local Adaptive Smooth - Dopler example.
    0005 %
    0006 % NEED: Improve plot - curve is hard to see.
    0007
    0008 x = (0:2047)'/2047;
    0009 m = 20*sqrt(x.*(1-x)) .* sin(2*pi*1.05 ./ (x+0.05));
    0010 y = m + normrnd(0,1,2048,1);
    0011 fit = locfit(x,y,'pen',4,'acri','cp','maxk',500);
    0012 figure('Name','fig11_4: local adaptive smooth: dopler example');
    0013 lfplot(fit,'red');