nodepar.m
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上传日期:2013-01-09
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- function par = nodepar(t,nodes,flagdp)
- %NODEPAR Node parent.
- % F = NODEPAR(T,N) returns the indices of the "parent(s)"
- % of the nodes N in the tree T.
- % N can be a column vector containing the indices of nodes
- % or a matrix which contains the depths and positions of nodes.
- % In the last case, N(i,1) is the depth of i-th node
- % and N(i,2) is the position of i-th node.
- %
- % F = NODEPAR(T,N,'deppos') is a matrix, which
- % contains the depths and positions of returned nodes.
- % F(i,1) is the depth of i-th node and
- % F(i,2) is the position of i-th node.
- %
- % The nodes are numbered from left to right and
- % from top to bottom. The root index is 0.
- %
- % Caution : NODEPAR(T,0) or NODEPAR(T,[0 0]) returns -1.
- % NODEPAR(T,0,'deppos') or NODEPAR(T,[0 0],'deppos')
- % returns [-1 0].
- %
- % See also NODEASC, NODEDESC, WTREEMGR.
- % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 21-May-2003.
- % Last Revision: 21-May-2003.
- % Copyright 1995-2004 The MathWorks, Inc.
- % $Revision: 1.1.6.2 $
- ok = all(isnode(t,nodes));
- if ~ok
- error('Invalid node(s) value.');
- end
- order = t.order;
- nodes = depo2ind(order,nodes);
- par = floor((nodes-1)/order);
- if nargin==3 , [par(:,1),par(:,2)] = ind2depo(order,par); end