adjacency_plot_und.m
3209cc2b0b1dmaster

adjacency_plot_und.m
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			function [X,Y,Z] = adjacency_plot_und(aij,coor)
			%ADJACENCY_PLOT_UND Quick visualization tool
			%
			% [X,Y,Z] = ADJACENCY_PLOT(AIJ,COOR) takes adjacency matrix AIJ and node
			% spatial coordinates COOR and generates three vectors that can be used
			% for quickly plotting the edges in AIJ. If no coordinates are specified,
			% then each node is assigned a position on a circle. COOR can, in
			% general, be 2D or 3D.
			%
			% Example:
			%
			% >> load AIJ; % load your adjacency matrix
			% >> load COOR; % load 3D coordinates for each node
			% >> [x,y,z] = adjacency_plot_und(AIJ,COOR); % call function
			% >> plot3(x,y,z); % plots network as a single line object
			%
			% If COOR were 2D, the PLOT3 command changes to a PLOT command.
			%
			% NOTE: This function is similar to MATLAB's GPLOT command.
			%
			% Richard Betzel, Indiana University, 2013

			n = length(aij);
			if nargin < 2
			coor = zeros(n,2);
			for i = 1:n
			coor(i,:) = [cos(2pi(i - 1)./n), sin(2pi(i - 1)./n)];
			end
			end

			[i,j] = find(triu(aij,1));
			[~, p] = sort(max(i,j));
			i = i(p);
			j = j(p);

			X = [ coor(i,1) coor(j,1)]';
			Y = [ coor(i,2) coor(j,2)]';
			if size(coor,2) == 3
			Z = [ coor(i,3) coor(j,3)]';
			end
			if isfloat(coor) \|\| nargout ~= 0
			X = [X; NaN(size(i))'];
			Y = [Y; NaN(size(i))'];
			if size(coor,2) == 3
			Z = [Z; NaN(size(i))'];
			end
			end

			X = X(:);
			Y = Y(:);
			if size(coor,2) == 3
			Z = Z(:);
			end