数据库驱动的地形图快速制图技术探究

Study on Fast Graphics of Topographic Map by Database Driven

在多年的发展中,国家基础测绘生产一直比较注重基础地理信息的数据采集更新及建库,相继完成了全国1:100万、1:25万、1:5万等基本比例尺数据库。随着基础地理信息数据库建库的迅速发展,地形图制图技术也应当有所优化与改进。结合全国1:5万基本比例尺数据库地形图快速制图的迫切需要,在探究现阶段地形图制图技术现状的前提下,分析了以数据库驱动为基础的地形图快速制图技术,并尝试设计了适合基础测绘行业现状的地形图快速制图工艺流程,开发了具有实用特点的生产软件。实践表明,其应用价值良好。

In the development of resent years, more attention has been given to the basic geographic information data collection update and build library by national basic surveying and mapping production, which successively completed national basic scale database, such as 1 ： 1, 000,000, 1 ： 250,000 and 1 ： 50,000. With the rapid development of building basic geographic information database, topographic map graphics should also be optimized artd improved. Combined with urgent needs of fast graphics by national basic scale 1 ： 50 000 topographic map database, under the premise of exploration on topographic map graphics, the topographic map based on database driven fast graphics is analyzed, a suitable drawing process for present situation of basic surveying and mapping industry topographic map is tried to design rapidly, and production software has developed by practical characteristics. Practice shows that, it has a good application value.