static void Main(string[] args)
{
// Create a random network
SimpleNetwork net = SimpleNetwork.ReadFromEdgeList("demo.edges");
// We use a custom coloring
NetworkColorizer colors = new NetworkColorizer();
colors.DefaultBackgroundColor = Color.Black;
colors.DefaultEdgeColor = Color.WhiteSmoke;
colors.DefaultVertexColor = Color.SteelBlue;
// Let's use curved edges instead of the default straight ones
Renderer.CurvedEdges = true;
// Fire up the visualizer window
Renderer.Start(net, new NETVisualizer.Layouts.FruchtermanReingold.FRLayout(10), colors);
// Trigger the layout
Renderer.Layout.DoLayoutAsync();
// The rendering and layouting is done asynchronously in parallel,
// so you can modify the network while the visualization and the layout continues
Console.Write("Press ANY KEY to add another edge");
Console.ReadKey();
net.AddEdge("a", "b");
net.AddEdge("b", "c");
// Trigger the layout again. Only changed nodes will be relayouted ...
Renderer.Layout.DoLayoutAsync();
Console.WriteLine("Waiting for rendering window to be closed ...");
}
/// <summary>
/// Reads a directed network from an edge list
/// </summary>
/// <param name="file">The filename to read the network from</param>
/// <param name="sep">The separator charactor used in the file</param>
/// <returns>A network</returns>
public static SimpleNetwork ReadFromEdgeList(string file, char sep = ' ')
{
string[] edges = System.IO.File.ReadAllLines(file);
SimpleNetwork net = new SimpleNetwork();
foreach (string edge in edges)
{
string[] nodes = edge.Split(sep);
net.AddEdge(nodes[0], nodes[1]);
}
return net;
}
/// <summary>
/// Reads a directed network from an edge list
/// </summary>
/// <param name="file">The filename to read the network from</param>
/// <param name="sep">The separator charactor used in the file</param>
/// <returns>A network</returns>
public static SimpleNetwork ReadFromEdgeList(string file, char sep = ' ')
{
string[] edges = System.IO.File.ReadAllLines(file);
SimpleNetwork net = new SimpleNetwork();
foreach (string edge in edges)
{
string[] nodes = edge.Split(sep);
net.AddEdge(nodes[0], nodes[1]);
}
return(net);
}
/// <summary>
/// Generates a simple random network with n nodes and m edges
/// </summary>
/// <param name="n">The number of nodes</param>
/// <param name="m">The number of edges</param>
/// <returns>A random network</returns>
public static SimpleNetwork CreateRandomNetwork(int n, int m)
{
Random r = new Random();
SimpleNetwork net = new SimpleNetwork();
for(int i = 0; i<n; i++)
net.AddVertex(i.ToString());
for (int j = 0; j < m; j++)
{
string x = net.GetVertexArray()[r.Next(net.GetVertexCount())];
string y = net.GetVertexArray()[r.Next(net.GetVertexCount())];
net.AddEdge(x, y);
}
return net;
}
/// <summary>
/// Generates a simple random network with n nodes and m edges
/// </summary>
/// <param name="n">The number of nodes</param>
/// <param name="m">The number of edges</param>
/// <returns>A random network</returns>
public static SimpleNetwork CreateRandomNetwork(int n, int m)
{
Random r = new Random();
SimpleNetwork net = new SimpleNetwork();
for (int i = 0; i < n; i++)
{
net.AddVertex(i.ToString());
}
for (int j = 0; j < m; j++)
{
string x = net.GetVertexArray()[r.Next(net.GetVertexCount())];
string y = net.GetVertexArray()[r.Next(net.GetVertexCount())];
net.AddEdge(x, y);
}
return(net);
}
