MATLAB: Force nodes to the graph

diagraphgraphplot

I have the next problem. I try to create a graph with 24 nodes, but the last three are deleted because there is no edge that go to them.

How can I force my graph to have 24 nodes?

Best Answer

plot(digraph(o,d,[],24))

Related Solutions

MATLAB: Rotation of graph node labels

The labels will be straight in most layouts (all but 'circle', 'layered'). You can first use 'circle' layout and then convert to having no layout and instead setting x, y data explicitly:

p = plot(G, 'Layout', 'circle');
p.XData = XData;

This will make the labels stand straight.

MATLAB: Determine separated node in graph

I'm not sure what is the final goal and/or application of this process. But let me try to do this task (since this "puzzle" will be a good excerise for me!)

% Create Graph object with fixed node name
s = [1 2 2 4 5 4 8 7 7 8 13];
t = [3 3 11 5 6 6 7 10 12 12 9];
G = graph(s,t,[],compose('%d',1:13));
% Separate G to subgraphs
group = conncomp(G,'OutputForm','cell');
subGraph = cellfun(@(x) subgraph(G,x),group,'UniformOutput',false);
% Initialize the output cell array (= result)
C_out = cell(1,numel(subGraph));
for kk1 = 1:numel(subGraph)
  % kk1-th subgraph
  G = subGraph{kk1};
  nodes = G.Nodes.Name';
  c = cell(1,numel(nodes));
  % Find non-neighbouring nodes for each node and create the output cell
  % arrray for each subgraph
  for kk2 = 1:numel(nodes)
    nextNodes = neighbors(G,nodes{kk2})';
    nonNextNodes = setdiff(nodes,[nodes(kk2),nextNodes]);
    if isempty(nonNextNodes)
      c{kk2} = str2double(nodes(kk2));
    else
      [~,pt] = sort(str2double(nonNextNodes));
      c{kk2} = str2double(nonNextNodes(pt));
    end
  end
  
  % Store the result for each subgraph
  C_out{kk1} = c;
end

Best Answer

Related Solutions

MATLAB: Rotation of graph node labels

MATLAB: Determine separated node in graph

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