利用DLG数据制作地形图

The Research on Utilizing DLG Data to Make Topographic Map

本文探讨了利用 1∶ 5万 DL G数据制作 1∶ 5万地形图的若干关键性技术 ,如数据预处理 ,注记层编辑 ,图层数据的编辑和要素的更新。并给出完整工艺流程 ,为数据库转化为模拟地图及电子地图等可视化产品提供科学依据。

This paper discusses detailed key technology of utilizing 1∶50 000 scale DLG(Digital Line Graphic) data to make topographic map of 1∶50 000 scale. Such as preprocessing of the data, the compilation of note layer on map, the compilation of graphic layer, the compilation of the data, the renewal of data. The paper gives technological processes of producing 1∶50 000 topographic map by utilizing 1∶50 000 DLG data, which offers scientific basis for spatial database transforming topographic map and visual electronic map product.