Hello @James Anderson, you can control the position of nodes in a graph plot in MATLAB using the 'XData' and 'YData' properties of the 'Node' object. Here's one way to do what you're asking for:
% Define the values of nodes
values = [1, 2, 3, 7, 8, 9, 17, 18, 19];
% Define the number of nodes
n = length(values);
% Creates an adjacency matrix A of size n x n with random connections between nodes
A = zeros(n, n);
for i = 1:n
for j = i+1:n
if rand < 0.5
A(i,j) = 1;
A(j,i) = 1;
end
end
end
% Create a graph from the adjacency matrix
G = graph(A);
% Define node positions based on the values
xpos = zeros(n, 1);
ypos = zeros(n, 1);
for i = 1:n
xpos(i) = i;
ypos(i) = values(i);
end
% Plot the graph
h = plot(G, 'XData', xpos, 'YData', ypos, 'LineWidth', 2);
% Set the axis limits
xlim([0, n + 1]);
ylim([0, 20]);
This will generate a figure with all nodes present at the level according to their values, however in order for node with value 1 to be at top and so on, you will have to reverse the direction of Y-axis. This can be done using the following steps:
- Click on 'Edit' and select 'Axes Properties...' option from the drop-down.
- Modify 'YDir' value from normal to reverse.
Hope this helps!
