static void Main(string[] args)
{
string dataFile = "./data.txt";
List <PointClass> data = GetData(dataFile);
FileStream fs = new FileStream("result.txt", FileMode.OpenOrCreate, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs, Encoding.Default);
Console.WriteLine("------------------------------");
int count = data.Count;
double XMin = PointClass.GetXMix(data);
double XMax = PointClass.GetXMax(data);
double YMin = PointClass.GetYMix(data);
double YMax = PointClass.GetYMax(data);
double XAve = PointClass.GetXAve(data);
double YAve = PointClass.GetYAve(data);
double area = PointClass.GetExtent(data);
WriteLine(String.Format("点数：,{0}", count), sw);
WriteLine(String.Format("X最小值：,{0}", XMin), sw);
WriteLine(String.Format("X最大值：,{0}", XMax), sw);
WriteLine(String.Format("Y最小值：,{0}", YMin), sw);
WriteLine(String.Format("Y最大值：,{0}", YMax), sw);
WriteLine(String.Format("X均值：,{0}", XAve), sw);
WriteLine(String.Format("Y均值：,{0}", YAve), sw);
WriteLine(String.Format("中位数：,{0}", new PointClass(XAve, YAve)), sw);
WriteLine(String.Format("点集外接矩形面积：,{0}", area), sw);
Console.WriteLine("------------------------------");
WriteLine("距离矩阵：", sw);
double[,] distances = new double[count, count];
for (int i = 0; i < count; i++)
{
for (int j = 0; j < count; j++)
{
if (i == j)
{
distances[i, j] = double.NaN;
}
else
{
distances[i, j] = PointClass.GetDistance(data[i], data[j]);
}
Console.Write(Math.Round(distances[i, j], 2) + "\t");
sw.Write(distances[i, j] + ",");
}
Console.Write("\n");
sw.Write("\n");
}
Console.WriteLine("------------------------------");
WriteLine("最小值：", sw);
double[] mins = new double[count];
for (int i = 0; i < count; i++)
{
double min = double.MaxValue;
for (int j = 0; j < count; j++)
{
if (i != j)
{
min = distances[i, j] < min ? distances[i, j] : min;
}
}
mins[i] = min;
Console.Write(Math.Round(min, 2) + "\t");
sw.Write(min + ",");
}
Console.Write("\n");
sw.Write("\n");
Console.WriteLine("------------------------------");
double ave_mins = mins.Average(); // 最邻近平均距离
double beauty_min = 1.0 / (2 * Math.Sqrt(count / area)); // 理想的随机性（普阿松分布型）的最近邻平均距离
double RValue = ave_mins / beauty_min; // 最邻近指数 R
WriteLine(String.Format("最邻近平均距离：\n{0}", ave_mins), sw);
WriteLine(String.Format("理想的随机性（普阿松分布型）的最近邻平均距离：\n{0}", beauty_min), sw);
WriteLine(String.Format("最邻近指数 R：\n{0}", RValue), sw);
sw.Close();
fs.Close();
File.Delete("result.csv");
File.Move("result.txt", "result.csv");
Console.ReadKey();
}
