superviewshed

代码说明：

  Superviewshed将计算所引用的地形和目标给予高度观察员矩阵洛杉矶分校。此外，标准的最低高度的地形观察将输出。运行约16倍视域。 (Superviewshed will calculate LOS of a referenced terrain matrices given observer and target altitudes. In addition, the standard minimum height observable of the terrain will be output. Runs approximately 16 times faster than viewshed.)