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Class: classregtree


ttype = type(t)


ttype = type(t) returns the type of the tree t. ttype is 'regression' for regression trees and 'classification' for classification trees.


Create a classification tree for Fisher's iris data:

load fisheriris;

t = classregtree(meas,species,...
                 'names',{'SL' 'SW' 'PL' 'PW'})
t = 
Decision tree for classification
1  if PL<2.45 then node 2 elseif PL>=2.45 then node 3 else setosa
2  class = setosa
3  if PW<1.75 then node 4 elseif PW>=1.75 then node 5 else versicolor
4  if PL<4.95 then node 6 elseif PL>=4.95 then node 7 else versicolor
5  class = virginica
6  if PW<1.65 then node 8 elseif PW>=1.65 then node 9 else versicolor
7  class = virginica
8  class = versicolor
9  class = virginica


ttype = type(t)
ttype =


[1] Breiman, L., J. Friedman, R. Olshen, and C. Stone. Classification and Regression Trees. Boca Raton, FL: CRC Press, 1984.

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