Wavelet Toolbox

dtree

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)

Fields

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);
  

See Also
ntree, wtbo

drawtree

dwt