I'd say,
classdef yourNodes
properties
S; % start nodes
T; % end nodes
pts; % points
end
methods
function obj = addNode(obj, X, Y, Z)
obj.pts = [obj.pts; X, Y, Z];
end
function obj = connectNodes(obj, ind1, ind2)
obj.S = [obj.S, ind1];
obj.T = [obj.T, ind2];
end
end
end
Then you could simply...
myNodes = yourNodes;
myNodes = addNode(myNodes, 1, 1, 1); % add node 1
myNodes = addNode(myNodes, 2, 2, 2); % add node 2
myNodes = connectNodes(myNodes, 1, 2); % Connect node1 to node2
