error graph with EdgeTable

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Gaetano Pavone
Gaetano Pavone 2020-1-27
评论： Steven Lord 2020-1-27
I would like to plot a graph consistent with the connectivity properties written in 'edge' with a customized width of the edges.
node = [100 -50 -50 -86.6025 0 86.6025;0 86.6025 -86.6025 50 -100 50;0 0 0 200 200 200];
edge = [1 2;2 3;3 1;1 4;2 5;3 6];
type = [1; 1; 1; -1; -1; -1];
EdgeTable = table(edge, ...
'VariableNames','EndNodes');
structure=graph(EdgeTable);
p=plot(structure,'XData', node(1,:), 'YData', node(2,:),'ZData',node(3,:));
p.NodeColor='black';
diameter=20*ones(length(edge),1); % define diameter of struts by using the coefficient
diameter(type>0)=1; % define diameter of cables by using the coefficient
labeledge(p,1:numedges(structure),(1:length(edge)))
p.LineWidth = diameter;
However the result is:
As it can be noted, the grapf doesn.t match the properties of the connectivity as well as the labeledge. Maybe, it happens because the EdgeTable is automatically rewritten by reordering the nodes. Is it right?
How can I fix this problem?

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Steven Lord
Steven Lord 2020-1-27
You are correct that the edges stored in the Edges table of the structure variable have been reordered, and so the values in type are not being applied to the edge you think they are. One solution is to add them as additional data to your Edges table.
>> EdgeTable = table(edge, type, 'VariableNames',{'EndNodes', 'type'});
>> structure=graph(EdgeTable)
Now if you look at structure.Edges the type variable has been reordered to match the ordering of the edges. Instead of using type later in your code, use
structure.Edges.type
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Christine Tobler
Christine Tobler 2020-1-27
You can make EdgeName a string array instead of a cell array of characters, which is much easier to construct:
>> string(1:4)
ans =
1×4 string array
"1" "2" "3" "4"
Steven Lord
Steven Lord 2020-1-27
If you're using a sufficiently recent release:
EdgeName = string(1:size(edge, 1)).'

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