# fig6_5

## PURPOSE

Local Regression and Likelihood, Figure 6.5.

## SYNOPSIS

This is a script file.

## DESCRIPTION

     Local Regression and Likelihood, Figure 6.5.
     Author: Catherine Loader

     Local smooth of CO2 dataset.
     Use bivariate fit to capture the two trends.

     bonus plot: fitted values vs year.

## CROSS-REFERENCE INFORMATION

This function calls:

- fitted Fitted values from a locfit object.
- 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 6.5.
    0002 % Author: Catherine Loader
    0003 %
    0004 % Local smooth of CO2 dataset.
    0005 % Use bivariate fit to capture the two trends.
    0006 %
    0007 % bonus plot: fitted values vs year.
    0008
    0009 load co2;
    0010 fit = locfit([month year+month/12],co2,'alpha',0.2,'style','an','scale',[6/pi,10]);
    0011
    0012 figure('Name','fig6_5a: Local smoothing');
    0013 lfplot(fit,'contour');
    0014 xlabel('Month');
    0015 ylabel('Year');
    0016
    0017 figure('Name','fig6_5b: Local smoothing');
    0018 plot(year+month/12,fitted(fit));
    0019 xlabel('Year');
    0020 ylabel('CO_2');
    0021