输入：
XY = NX2矩阵与点的坐标。
可选参数：
临界面积比（实数和正数）。具有大于最大相邻多边形面积比值的节点被确定为空穴边界点。默认值是3。
m =手动编辑标志。默认值是0。
0：没有手动编辑。
1：手动编辑孔边点。第一次计算后，点云的图形被打开。自动识别点用“X”标记。用户可以添加/删除/错误认定边界点的选择和刷点击适当的按钮。(Input:

XY= Nx2 matrix with point coordinates.
Optional arguments:

S = Critical area ratio (real and positive number). Knots with a value higher than the ratio of maximum to minimum neighbouring polygon area are identified as hole-border points. Default value is 3.
M = Flag for manual editing. Default value is 0.
0: No manual editing.
1: Manual editing of hole-border points. After the first calculation a figure with the point cloud is opened. Automatically recognized points are marked with an 'x'. The user can add/remove not/wrongly recognized border points selecting them with the brush and clicking the appropiate button.)