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Constructor for the class DTREE.
Syntax
T = dtree(ORD,D,X)
T = dtree(ORD,D,X,U)
[T,NB] = dtree(...)
T = dtree('PropName1',PropValue1,'PropName2',PropValue2, ...)
Description
T = dtree(ORD,D,X) returns a complete data tree (DTREE) object of order ORD and depth D. The data associated with the tree T is X.
With T = dtree(ORD,D,X,U) you can set a userdata field.
[T,NB] = dtree(...) returns also the number of terminal nodes (leaves) of T.
[T,NB] = dtree('PropName1',PropValue1,'PropName2',PropValue2,...) is the most general syntax to construct a DTREE object.
The valid choices for 'PropName' are:
'order' |
: Order of the tree. |
'depth' |
: Depth of the tree. |
'data' |
: Data associated to the tree. |
'spsch' |
: Split scheme for nodes. |
'ud' |
: Userdata field. |
The split scheme field is an order ORD by 1 logical array. The root of the tree can be split and it has ORD children. If spsch(j) = 1, you can split the j-th child. Each node that you can split has the same property as the root node.
For more information on object fields, type: help dtree/get.
Class DTREE (Parent class: NTREE)
| dtree |
: Parent object. |
| allNI |
: All nodes information. |
| terNI |
: Terminal nodes information. |
Examples
% Create a data tree. x = [1:10]; t = dtree(3,2,x); t = nodejoin(t,2);
| | drawtree | dwt | |