# fig11_1

## PURPOSE

Local Regression and Likelihood, Figure 11.1

## SYNOPSIS

This is a script file.

## DESCRIPTION

     Local Regression and Likelihood, Figure 11.1

     Variable degree fit, uses module 'vord'. Note there is
     no `lower' degree here; it defaults to 0.

     Author: Catherine Loader

## 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.
- predict Interpolate a fit produced by locfit().

This function is called by:

- runbook

## SOURCE CODE

    0001 % Local Regression and Likelihood, Figure 11.1
    0002 %
    0003 % Variable degree fit, uses module 'vord'. Note there is
    0004 % no `lower' degree here; it defaults to 0.
    0005 %
    0006 % Author: Catherine Loader
    0007
    0008 load ethanol;
    0009
    0010 figure('Name','fig11_1a: Variable degree fit');
    0011 fit = locfit(E,NOx,'deg',3,'nn',0.3,'module','vord');
    0012 lfplot(fit);
    0013
    0014 figure('Name','fig11_1b: Variable degree fit');
    0015 x = fit.fit_points.evaluation_points';
    0016 z = predict(fit,'fitp','what','deg');
    0017 plot(x,z,'o');
    0018 xlabel('Fitting Point');
    0019 ylabel('Degree');