MATLAB: Coloring node and edge of a graph

graphMATLAB

I have a graph with values assigned to nodes and edges,


t = 1:4;
h = 2:5;
g = graph(t,h);
plot(g)
g.Edges.value = [10; 20; 20; 100];
g.Nodes.value = [0.3; 0.564; 12; 1; 0.005];

I would like to know whether there is an option of coloring the nodes and edges based on the values.

Best Answer

The highlight function is one way to do this. Check out the examples on this page.

Related Solutions

MATLAB: How to choose different colors for nodes

When you call plot on your graph or digraph object, specify the 'NodeColor' property. For example, here are two ways to create a digraph like the one in your example and plot it with node 1 being red and the others being green. I put each in their own figure window so you can compare the results.

d = digraph;
d = addedge(d, 1, 2:5);

You can explicitly specify a numnodes(d)-by-3 matrix of RGB values:

figure
p = plot(d, 'NodeColor', [1 0 0; 0 1 0; 0 1 0; 0 1 0; 0 1 0]);

Or you can plot with all the nodes being the same color and highlight ones that are in some way 'special'.

figure;
h = plot(d, 'NodeColor', 'g');
highlight(h, 1, 'NodeColor', 'r');

MATLAB: Changing the color of one particular node into different colors

What is the full and exact text of the error message you receive when you run that code? Include all the text displayed in red, exactly as it's shown in the Command Window. Don't paraphrase or summarize.

You also haven't shown us the functions supply_nodes and demand_nodes.

Finally, you probably don't want to plot the graph multiple times, once per element in your col vector. plot it once then highlight it multiple times (or highlight it with a vector of node IDs to change all those nodes at once.)

Best Answer

Related Solutions

MATLAB: How to choose different colors for nodes

MATLAB: Changing the color of one particular node into different colors

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