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## Copyright (C) 2024 David Legland
## All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## 1 Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
## 2 Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
## ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
##
## The views and conclusions contained in the software and documentation are
## those of the authors and should not be interpreted as representing official
## policies, either expressed or implied, of the copyright holders.
function [nodes2, edges2] = grRemoveNode(nodes, edges, node)
%GRREMOVENODE Remove a node in a graph.
%
% usage:
% [NODES2 EDGES2] = grRemoveNode(NODES, EDGES, NODE2REMOVE)
% remove the node with index NODE2REMOVE from array NODES, and also
% remove edges containing the node NODE2REMOVE.
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2003-08-13
% Copyright 2003-2023 INRA - TPV URPOI - BIA IMASTE
% remove all edges connected to the node
neighbours = grAdjacentEdges(edges, node);
[nodes2, edges2] = grRemoveEdges(nodes, edges, neighbours); %#ok<ASGLU>
% change edges information, due to the node index shift
for i = 1:length(edges2)
if edges2(i,1) > node
edges2(i,1) = edges2(i,1) - 1;
end
if edges2(i,2) > node
edges2(i,2) = edges2(i,2) - 1;
end
end
% allocate memory
dim = size(nodes);
nodes2 = zeros(dim(1)-1, 2);
% copy nodes information, except the undesired node
nodes2(1:node-1, :) = nodes(1:node-1, :);
nodes2(node:dim(1)-1, :) = nodes(node+1:dim(1), :);
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