isnode
Existing node test
Syntax
R = isnode(T,N)
Description
isnode is a tree-management
utility.
R = isnode( returns
1's for nodes T,N)N, which exist in the tree T,
and 0's for others.
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.
The nodes are numbered from left to right and from top to bottom. The root index is 0.
Examples
% Create initial tree. ord = 2; t = ntree(ord,3); % binary tree of depth 3. t = nodejoin(t,5); t = nodejoin(t,4); plot(t)
% Change Node Label from Depth_Position to Index
% (see the plot function).
% Check node index.
isnode(t,[1;3;25])
ans =
1
1
0
% Check node Depth_Position.
isnode(t,[1 0;3 1;4 5])
ans =
1
1
0
Introduced before R2006a