error graph with EdgeTable
4 views (last 30 days)
Show older comments
Gaetano Pavone
on 27 Jan 2020
Commented: Steven Lord
on 27 Jan 2020
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:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/268538/image.jpeg)
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?
0 Comments
Accepted Answer
Steven Lord
on 27 Jan 2020
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
3 Comments
Christine Tobler
on 27 Jan 2020
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
on 27 Jan 2020
If you're using a sufficiently recent release:
EdgeName = string(1:size(edge, 1)).'
More Answers (0)
See Also
Categories
Find more on Graph and Network Algorithms in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!