Wavelet Toolbox™

Node ascendants

Syntax

• A = nodeasc(T,N)
  A = nodeasc(T,N,'deppos')
  

Description

nodeasc is a tree-management utility.

A = nodeasc(T,N) returns the indices of all the ascendants of the node N in the tree T where N can be the index node or the depth and position of the node. A is a column vector with A(1) = index of node N.

A = nodeasc(T,N,'deppos') is a matrix, which contains the depths and positions of all ascendants. A(i,1) is the depth of the i-th ascendant and A(i,2) is the position of the i-th ascendant.

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).
  
  
  nodeasc(t,[2 2])
  ans =
      5 
      2 
      0
  
  nodeasc(t,[2 2],'deppos')
  ans =
      2     2 
      1     1 
      0     0
  

See Also

nodedesc, nodepar, wtreemgr

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