GIS的各种分析功能，求交叠加、求和叠加、擦除叠加、同一性叠加、更新叠加、异或叠加-A variety of GIS analysis functions, and cross-stacking, stacking sum, erase overlay, overlay identity, update the superposition of different or overlapping

示范在SuperMap Objects 中如何数据集叠加分析功能，主要完成对数据集的裁剪和擦除功能。-SuperMap Objects demonstration of how the data in the overlay function set, the main cutting complete data set, and erase capability.

ArcEngnine开发Erase功能，方便初学者学习Erase功能，可进行模仿。-ArcEngnine Erase