52 lines
1.7 KiB
C#
52 lines
1.7 KiB
C#
using System.Diagnostics;
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using System.Drawing;
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using System.Globalization;
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namespace kMeans;
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public static class Program
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{
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private const string Coordinates = "coordinates.csv";
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private const string PlotOut = "plot.png";
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private const int K = 3;
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private static void Main()
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{
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Console.WriteLine("k-Means-Algorithmus");
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var points = ParseCsv(Coordinates);
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PlotDiagram(points);
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}
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private static IReadOnlyList<Point> ParseCsv(string path)
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{
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var sw = Stopwatch.StartNew();
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var result = new List<Point>();
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var lines = File.ReadLines(path);
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foreach (var line in lines)
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{
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var current = line.Split(',');
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if (!double.TryParse(current[0], NumberStyles.Any, CultureInfo.InvariantCulture, out var x)) continue;
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if (!double.TryParse(current[1], NumberStyles.Any, CultureInfo.InvariantCulture, out var y)) continue;
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var point = new Point(x, y);
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result.Add(point);
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}
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sw.Stop();
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Console.WriteLine($"[{nameof(ParseCsv)}] Elapsed: {sw.ElapsedMilliseconds}ms");
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return result;
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}
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private static void PlotDiagram(IReadOnlyList<Point> points)
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{
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var sw = Stopwatch.StartNew();
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var plot = new ScottPlot.Plot();
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plot.AddScatterPoints(points.Select(p => p.X).ToArray(), points.Select(p => p.Y).ToArray());
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plot.SaveFig(PlotOut);
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sw.Stop();
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Process.Start(new ProcessStartInfo(PlotOut) { UseShellExecute = true });
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Console.WriteLine($"[{nameof(PlotDiagram)}] Elapsed: {sw.ElapsedMilliseconds}ms");
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}
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private record Point(double X, double Y, Color? Color = default, bool Mean = false);
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} |