MATLAB: How to convert 2-way edges in digraphs to straight single line edges

Question

In small network, two-way looping links are easy to understand (left in the figure), but in bigger networks, two-way loops make the network really unpleasant (right in the figure). Is there any way I can draw the two directional digraphs with straight lines? (with maybe the directions shown by arrows on the links (just like it is shown in one-directional digraphs) but in two directions.

I posted this question before but got no answers.. hoping for some this time… Thanks

Answer 1

Well.. there is no direct way with which MATLAB can convert the circular two-way links to a single straight line. But deleting the backward link from each OD pair and plotting the graph as simple graph will do the trick.. for that I used this code: ----->

input1 = xlsread('neu.xlsx');

input2 = xlsread('neu_xy.xlsx');

x = input2(:,2)';

y = input2(:,3)';

a = input1(:,[1 2])';

j=0;

count = 0;

while j < size(a,2);

    j = j+1;
    for i = 1:size(a,2)-1
        if flipud(a(:,i)) == a(:,j)
            a(:,j) =[];
            count = count + 1;
        end
    end

end

G = graph(a(1,:),a(2,:));

h = plot(G,'XData',x,'YData',y);

highlight (h,1:16, 'NodeColor','k','MarkerSize',6);