/// <summary>
/// 计算最邻近平均距离
/// </summary>
/// <param name="index">最邻近距离的基准点</param>
/// <param name="points">统计点集</param>
/// <returns>返回以第index个点作为基准点的最邻近平均距离</returns>
public static double wxzNNADistance(params FeatureClass.Point[] points)
{
int len = points.Length;
double sum = 0;
for (int i = 0; i < len; i++)
{
FeatureClass.Point targetPt = points[i];
double minDistance = 999999999;
for (int j = 0; j < len; j++)
{
if (i != j)
{
double distance = wxzDistance(targetPt, points[j]);
if (distance < minDistance)
{
minDistance = distance;
}
}
}
sum += minDistance;
}
return(sum / len);
}
/// <summary>
/// 计算平面上两点间的最短距离
/// </summary>
/// <param name="p1">第一个点</param>
/// <param name="p2">第二个点</param>
/// <returns>返回两点间的距离</returns>
public static double wxzDistance(FeatureClass.Point p1, FeatureClass.Point p2)
{
return(Math.Sqrt(Math.Pow(p1.X - p2.X, 2) + Math.Pow(p1.Y - p2.Y, 2)));
}