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PlotScriptGeneration.cs
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PlotScriptGeneration.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using GraphFramework.Serializers;
using GraphFramework.Interfaces;
using GraphFramework;
using GraphGenerationModelsSample.Interface;
namespace GraphGenerationModelsSample {
public struct GenerationParameters {
public Type GenerationType { get; set; }
public int Size { get; set; }
public IEnumerable<double[]> ParameterSets { get; set; }
}
public static class PlotScriptGeneration {
private static void SaveGraph(string qualifiedName, IChangesModel<int> c) {
SaveGraph(qualifiedName, c, false);
}
/// <summary>
/// Saves a graph and it's degree distributions. If the graph is directed then the in,out and total degree distributions are saved,
/// otherwise only the (total) degree distribution.
/// </summary>
/// <param name="qualifiedName">The target filename</param>
/// <param name="c">The graph model</param>
/// <param name="refreshDegrees">Whether the degree distribution files should be rewritten even if they already exist</param>
private static void SaveGraph(string qualifiedName, IChangesModel<int> c, bool refreshDegrees) {
string graphFilename = qualifiedName + Path.DirectorySeparatorChar + Program.graphName;
if (!Directory.Exists(qualifiedName)) {
Directory.CreateDirectory(qualifiedName);
}
if (!File.Exists(graphFilename)) {
GraphWriter<int>.WriteGraph(c.VisitedGraph, graphFilename);
}
if ((c.VisitedGraph == null && refreshDegrees)) {
c.VisitedGraph = GraphReader<int>.ReadGraphAsBidirectional(graphFilename);
}
if (c.VisitedGraph != null && c.VisitedGraph.VertexCount > 0) {
if (!File.Exists(qualifiedName + Path.DirectorySeparatorChar + "degreeDistribution.txt") || refreshDegrees) {
SortedDictionary<int, double> DegreeDistributions = c.VisitedGraph.TotalDegreeDistribution();
SortedDictionary<int, int> Degrees = new SortedDictionary<int, int>();
using (StreamWriter sw = new StreamWriter(qualifiedName + Path.DirectorySeparatorChar + "degreeDistribution.txt")) {
foreach (var kv in DegreeDistributions) {
sw.WriteLine(Math.Log(kv.Key, c.VisitedGraph.VertexCount) + "\t" + kv.Value / c.VisitedGraph.VertexCount);
}
}
}
var bgraph = c.VisitedGraph as IBidirectionalGraph<int>;
if (bgraph != null) {
if (!File.Exists(qualifiedName + Path.DirectorySeparatorChar + "Din.txt") || refreshDegrees) {
SortedDictionary<int, double> DegreeDistributions = bgraph.InDegreeDistribution();
SortedDictionary<int, int> Degrees = new SortedDictionary<int, int>();
using (StreamWriter sw = new StreamWriter(qualifiedName + Path.DirectorySeparatorChar + "Din.txt")) {
foreach (var kv in DegreeDistributions) {
sw.WriteLine(Math.Log(kv.Key, c.VisitedGraph.VertexCount) + "\t" + kv.Value / c.VisitedGraph.VertexCount);
}
}
}
}
var agraph = c.VisitedGraph as IUndirectedGraph<int>;
if (agraph == null) {
if (!File.Exists(qualifiedName + Path.DirectorySeparatorChar + "Dout.txt") || refreshDegrees) {
SortedDictionary<int, double> DegreeDistributions = c.VisitedGraph.OutDegreeDistribution();
if (DegreeDistributions.Count > 3) {
using (StreamWriter sw = new StreamWriter(qualifiedName + Path.DirectorySeparatorChar + "Dout.txt")) {
foreach (var kv in DegreeDistributions) {
sw.WriteLine(Math.Log(kv.Key, c.VisitedGraph.VertexCount) + "\t" + kv.Value / c.VisitedGraph.VertexCount);
}
}
}
}
}
}
}
/// <summary>
/// Generates graphs with the given parameter sets and writes a GnuPlot script which, when ran, will plot the degree distribution of all generated graphs
/// </summary>
/// <param name="graphGenerationTypes">The graph generation parameters (model, size etc.) for all graphs to be generated</param>
public static void GenerateWithPlotScript(IEnumerable<GenerationParameters> graphGenerationTypes) {
using (StreamWriter sw = new StreamWriter(GetBasePath() + Path.DirectorySeparatorChar + "plotAll.plt")) {
sw.WriteLine("set term pngcairo dashed color enhanced size 2600,1230 font ',26'");
sw.WriteLine("set border 15 lw 5");
sw.WriteLine("set xlabel '{/Symbol e}=\\log_n d(u)'");
sw.WriteLine("set ylabel 'Frequency'");
sw.WriteLine("f(A,c,n,x) = A/((n**x)**c)");
sw.WriteLine("set logscale y");
sw.WriteLine("set yrange [1.0/(" + ((graphGenerationTypes.Max(gt => gt.Size)) + 100) + ") to 1.0]");
sw.WriteLine("FIT_LIMIT = 1e-9");
sw.WriteLine("set output 'plotall.png'");
foreach (var gt in graphGenerationTypes) {
sw.WriteLine(GenerateWithPlotScript(gt));
}
}
}
/// <summary>
/// Generates a graph with the given parameters and writes a GnuPlot script which, when ran, will plot the degree distribution of this graph
/// </summary>
/// <param name="graphGenerationType">The graph generation parameters (model, size etc.)</param>
/// <returns>A string to the generated graph filename</returns>
public static string GenerateWithPlotScript(GenerationParameters graphGenerationType) {
int i = graphGenerationType.Size;
int j = 0;
StringBuilder sb = new StringBuilder();
int paramIndex = -1;
string[] outputdirs = new string[graphGenerationType.ParameterSets.Count()];
string[] titles = new string[graphGenerationType.ParameterSets.Count()];
string cparamName = "c" + i + paramIndex;
string AparamName = "A" + i + paramIndex;
foreach (var parameters in graphGenerationType.ParameterSets) {
paramIndex++;
IChangesModel<int> c = (IChangesModel<int>)Activator.CreateInstance(graphGenerationType.GenerationType, i, new Func<int, int>(v => v), parameters);
var outputdir = Program.GetGraph(GetBasePath(), c);
SaveGraph(outputdir, c,true);
cparamName = "c" + i + paramIndex;
AparamName = "A" + i + paramIndex;
using (StreamWriter sw = new StreamWriter(outputdir + Path.DirectorySeparatorChar + "plot.plt")) {
sw.WriteLine("set term pngcairo dashed color enhanced size 2600,1230 font ',26'");
sw.WriteLine("f(A,c,n,x) = A/((n**x)**c)");
sw.WriteLine("set border 15 lw 5");
sw.WriteLine("set xlabel '{/Symbol e}=\\log_n d(u)'");
sw.WriteLine("set ylabel 'Frequency'");
string title = c.ModelName + " \\n n=" + i;
sw.WriteLine("set title \"Degree Distributions for " + title + "\"");
if (paramIndex == 0) {
sb.AppendLine("set title \"Degree Distributions for " + title + "\"");
}
sw.WriteLine("set logscale y");
sw.WriteLine("set yrange [1.0/(" + (i + 100) + ") to 1.0]");
sw.WriteLine("set output 'g-" + i + "-" + j + ".png'");
string[] paramnames = new string[parameters.Length];
string title2 = "";
for (int p = 0; p < parameters.Length; p++) {
if (c.ParameterDescriptions[p].Type == ParameterType.DOUBLE || c.ParameterDescriptions[p].Type == ParameterType.PROBABILITY) {
paramnames[p] = c.ParameterDescriptions[p].Name + " = " + string.Format("{0:00.00}", parameters[p]);
} else if (c.ParameterDescriptions[p].Type == ParameterType.INT) {
paramnames[p] = c.ParameterDescriptions[p].Name + " = " + (int)parameters[p];
} else {
paramnames[p] = (parameters[p]==0?"Not ":" ") + c.ParameterDescriptions[p].Name;
}
title2 += (p > 0 ? ", " : "") + paramnames[p];
}
sw.WriteLine("c=3");
sw.WriteLine("A = 100");
sw.WriteLine("FIT_LIMIT = 1e-9");
sw.WriteLine("fit [x=0.2 to 0.3] f(A,c,"+i+",x) '" + outputdir + "\\degreeDistribution.txt' using 1:2 via A,c");
sb.AppendLine(cparamName + "=3");
sb.AppendLine(AparamName + " = 100");
sb.AppendLine("fit [x=0.2 to 0.3] f("+AparamName + ","+cparamName + ","+i+",x) '" + outputdir + "\\degreeDistribution.txt' using 1:2 via " + AparamName + ","+ cparamName);
if (File.Exists(outputdir + Path.DirectorySeparatorChar + "Din.txt")) {
sw.WriteLine("cin=3");
sw.WriteLine("Ain = 100");
sw.WriteLine("fit [x=0.2 to 0.3] f(Ain,cin,"+i+",x) '" + outputdir + "\\Din.txt' using 1:2 via Ain,cin");
}
if (File.Exists(outputdir + Path.DirectorySeparatorChar + "Dout.txt")) {
sw.WriteLine("cout=3");
sw.WriteLine("Aout = 100");
sw.WriteLine("fit [x=0.2 to 0.3] f(Aout,cout," + i + ",x) '" + outputdir + "\\Dout.txt' using 1:2 via Aout,cout");
}
sw.WriteLine("plot '" + outputdir + "\\degreeDistribution.txt' using 1:2 with linespoints lw 5 ps 2 title '" + title2 + ", Total Degree',\\");
sw.Write("f(A,c,"+i+",x) lw 5 title sprintf(\"f(x) = A/x^{%2.2f})\",c)");
if (File.Exists(outputdir + Path.DirectorySeparatorChar + "Din.txt")) {
sw.WriteLine(",\\" + Environment.NewLine + "'" + outputdir + "\\Din.txt' using 1:2 with linespoints lw 5 ps 2 title 'In Degree',\\");
sw.Write("f(Ain,cin," + i + ",x) lw 5 title sprintf(\"f(x) = A/x^{%2.2f})\",cin)");
}
if (File.Exists(outputdir + Path.DirectorySeparatorChar + "Dout.txt")) {
sw.WriteLine(",\\" + Environment.NewLine + "'" + outputdir + "\\Dout.txt' using 1:2 with linespoints lw 5 ps 2 title 'Out Degree',\\");
sw.Write("f(Aout,cout," + i + ",x) lw 5 title sprintf(\"f(x) = A/x^{%2.2f})\",cout)");
}
sw.WriteLine(";");
sw.WriteLine("set output");
outputdirs[paramIndex] = outputdir;
titles[paramIndex] = title2;
}
}
paramIndex = 0;
sb.Append("plot ");
foreach (var p in graphGenerationType.ParameterSets) {
cparamName = "c" + i + paramIndex;
AparamName = "A" + i + paramIndex;
sb.AppendLine("'" + outputdirs[paramIndex] + "\\degreeDistribution.txt' using 1:2 with linespoints lw 5 ps 2 title '" + titles[paramIndex] + ", Total Degree',\\");
sb.Append("f(" + AparamName + "," + cparamName + ","+i+",x) lw 5 title sprintf(\"f(x) = A/x^{%2.2f})\"," + cparamName + ")");
paramIndex++;
sb.AppendLine((paramIndex == graphGenerationType.ParameterSets.Count() ? ";" : ",\\"));
}
sb.AppendLine("set output");
j++;
GC.Collect();
return sb.ToString();
}
/// <summary>
/// Generates graphs using a given generation model.
/// It will generate a graph for each combination of sizes and parameters given for a total of Ns.Count*parameterSets.Count() graphs.
/// </summary>
/// <param name="graphGenerationType">The generation model to use</param>
/// <param name="Ns">The sizes of the graphs to be generated</param>
/// <param name="parameterSets">The parameters used to generate these graphs</param>
public static void GenerateWithPlotScript(Type graphGenerationType, IEnumerable<int> Ns, IEnumerable<double[]> parameterSets) {
List<GenerationParameters> gp = new List<GenerationParameters>();
foreach (var i in Ns) {
gp.Add(new GenerationParameters { GenerationType = graphGenerationType, Size = i, ParameterSets = parameterSets });
}
GenerateWithPlotScript(gp);
Console.WriteLine("Press any key to continue... Press any other key to quit");
Console.ReadLine();
}
//Gets a default path for the graphs to be stored in
public static string GetBasePath() {
var di = DriveInfo.GetDrives();
//-- Uncomment this to always use the first physical drive which is not the root drive. May not work in Mono.NET
//var targetDrive = di.FirstOrDefault(d => !d.Name.Contains("C:") && d.DriveType == DriveType.Fixed);
var targetDrive = di.FirstOrDefault();
if (targetDrive == default(DriveInfo)) {
targetDrive = di.First();
}
var pathbase = targetDrive.RootDirectory.FullName + Path.DirectorySeparatorChar + @"Data\Generation\";
if (!Directory.Exists(pathbase)) {
Directory.CreateDirectory(pathbase);
}
return pathbase;
}
}
}