www.gusucode.com > stats 源码程序 matlab案例代码 > stats/PredictAResponseUsingARegressionTreeExample.m

    %% Predict a Response Using a Regression Tree
%%
% Load the |carsmall| data set.  Consider |Displacement|, |Horsepower|, and
% |Weight| as predictors of the response |MPG|.

% Copyright 2015 The MathWorks, Inc.

load carsmall
X = [Displacement Horsepower Weight];
%%
% Grow a regression tree using the entire data set.
Mdl = fitrtree(X,MPG);
%%
% Predict the MPG for a car with 200 cubic inch engine displacement, 150
% horsepower, and that weighs 3000 lbs.
X0 = [200 150 3000];
MPG0 = predict(Mdl,X0)
%%
% The regression tree predicts the car's efficiency to be 21.94 mpg.