Home > sgwt_toolbox > sgwt_check_connected.m

sgwt_check_connected

PURPOSE ^

sgwt_check_connected : Check connectedness of graph

SYNOPSIS ^

function r=sgwt_check_connected(A)

DESCRIPTION ^

 sgwt_check_connected : Check connectedness of graph

 function r=sgwt_check_connected(A)
 
 returns 1 if graph is connected, 0 otherwise
 Uses boost graph library breadth first search

 Inputs : 
 A - adjacency matrix

 Outputs :
 r - result

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 % sgwt_check_connected : Check connectedness of graph
0002 %
0003 % function r=sgwt_check_connected(A)
0004 %
0005 % returns 1 if graph is connected, 0 otherwise
0006 % Uses boost graph library breadth first search
0007 %
0008 % Inputs :
0009 % A - adjacency matrix
0010 %
0011 % Outputs :
0012 % r - result
0013 %
0014 
0015 % This file is part of the SGWT toolbox (Spectral Graph Wavelet Transform toolbox)
0016 % Copyright (C) 2010, David K. Hammond.
0017 %
0018 % The SGWT toolbox is free software: you can redistribute it and/or modify
0019 % it under the terms of the GNU General Public License as published by
0020 % the Free Software Foundation, either version 3 of the License, or
0021 % (at your option) any later version.
0022 %
0023 % The SGWT toolbox is distributed in the hope that it will be useful,
0024 % but WITHOUT ANY WARRANTY; without even the implied warranty of
0025 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0026 % GNU General Public License for more details.
0027 %
0028 % You should have received a copy of the GNU General Public License
0029 % along with the SGWT toolbox.  If not, see <http://www.gnu.org/licenses/>.
0030 
0031 function r=sgwt_check_connected(A)
0032   d=bfs(A,1);
0033   r=~any(d==-1);
0034

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