Large-range topographic data processing method and device and electronic equipment

The invention provides a large-range topographic data processing method and device and electronic equipment. The method comprises the following steps: acquiring all contour lines in an original contour line topographic map; creating a grid covering all the contour lines; establishing an index file and a contour file of the grid, and storing the index file and the contour file; and generating a new contour topographic map based on a predetermined design terrain range, the index file and the contour file. By adopting the method, the contour line in the original contour line topographic map can be separated from design software, and the contour line topographic map can be automatically generated only by giving a design terrain range when a large-range contour line topographic map is designed, so that the design efficiency is improved. 本发明提供了一种大范围地形数据处理方法、装置及电子设备，获取原始等高线地形图中的全部等高线；创建覆盖全部等高线的格网；建立格网的索引文件和等高线文件，并对索引文件和等高线文件进行存储；基于预先确定的设计地形范围以及索引文件和等高线文件，生成新等高线地形图。采用本发明可以将原始等高线地形图中的等高线与设计软件分离，且在设计大范围等高线地形图时只需给定设计地形范