Wavelet Toolbox™

Node parent

Syntax

• F = nodepar(T,N)
  F = nodepar(T,N,'deppos')
  

Description

nodepar is a tree-management utility.

F = nodepar(T,N) returns the indices of the "parent(s)" of the nodes N in the tree T where N can be a column vector containing the indices of nodes or a matrix that contains the depths and positions of nodes. In the last case, N(i,1) is the depth of the i-th node and N(i,2) is the position of the i-th node.

F = nodepar(T,N,'deppos') is a matrix that contains the depths and positions of returned nodes. F(i,1) is the depth of the i-th node and F(i,2) is the position of the i-th node.

nodepar(T,0) or nodepar(T,[0,0]) returns -1.

nodepar(T,0,'deppos') or nodepar(T,[0,0],'deppos') returns [-1,0].

The nodes are numbered from left to right and from top to bottom. The root index is 0.

Examples

• % Create binary tree of depth 3. 
  t = ntree(2,3); 
  t = nodejoin(t,5); 
  t = nodejoin(t,4); 
  plot(t)
  
  
  % Change Node Label from Depth_Position to Index
  % (see the plot function).
  
  
  % Nodes parent.
  nodepar(t,[2 2],'deppos')
  
  ans =
      1     1
  
  nodepar(t,[1;7;14])
  
  ans =
      0
      3
      6
  

See Also

nodeasc, nodedesc, wtreemgr

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nodejoin

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