Documentation

nodeasc

Node ascendants

Syntax

A = nodeasc(T,N)

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
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