/GML_AdaBoost_Matlab_Toolbox_0.3/@tree_node_w/get_dim_and_tr.m

%   The algorithms implemented by Alexander Vezhnevets aka Vezhnick

%   <a>href="mailto:vezhnick@gmail.com">vezhnick@gmail.com</a>

%

%   Copyright (C) 2005, Vezhnevets Alexander

%   vezhnick@gmail.com

%   

%   This file is part of GML Matlab Toolbox

%   For conditions of distribution and use, see the accompanying License.txt file.

%

%   get_dim_and_tr is the function, that returns dimension and threshold of

%   tree node

%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

%

%    output = get_dim_and_tr(tree_node, output)

%    ---------------------------------------------------------------------------------

%    Arguments:

%           tree_node - a node of classification tree

%           output    - vector of dimensions and thresholds. Result fo

%                       current node would be concatinated to it

%    Return:

%           output    - a vector of thresholds and dimensions. It has the

%                       following format:

%                       [dimension threshold left/right ...]

%                       left/right is  [-1, +1] number, wich signifies if

%                       current threshold is eather left or right



function output = get_dim_and_tr(tree_node, output)



if(nargin < 2)

  output = [];

end



if(length(tree_node.parent) > 0)

  output = get_dim_and_tr(tree_node.parent, output);

end



output(end+1) = tree_node.dim;



if( length(tree_node.right_constrain) > 0)

  output(end+1) = tree_node.right_constrain;

  output(end+1) = -1;

elseif( length(tree_node.left_constrain) > 0)

  output(end+1) = tree_node.left_constrain;

  output(end+1) = +1;

end



% function [dim, tr, signum] = get_dim_and_tr(tree_node)

% 

% dim = tree_node.dim;

% 

% 

% 

% if( length(tree_node.right_constrain) > 0)

%   tr = tree_node.right_constrain;

%   signum = -1;

% end

% if( length(tree_node.left_constrain) > 0)

%   tr = tree_node.left_constrain;

%   signum = +1;

% end