基于矢量瓦片的矢量数据组织方法研究

A Method of Vector Data Organization Based on Vector Tile

针对当前矢量数据组织方法在显示效率和效果方面存在的不足,提出了一种基于矢量瓦片的矢量数据组织方法。通过建立矢量瓦片的逻辑模型和物理模型,实现了基于瓦片的矢量数据表达;结合金字塔思想,实现了基于LOD的矢量瓦片调度。应用Open Street Map路网数据进行了相关实验,结果表明,该方法在保证矢量数据精度、便于制图和交互操作特性的同时,提高了数据调度效率,是行之有效的。

For the Deficiency of the current method of displaying vector data organization efficiency,proposed a way to organize vector data based on vector tile. Logic Model and Physical Model was established for tile- based expression of vector data; implement the dispatcher of vector tile based on Level- of- Detail with the thought of tile- pyramid. An experiment is performed with route data from Open Street Map. The results showed that,it is effective to improve the efficiency of data scheduling on the basis of keep the precision of vector data and the characteristics of convenient for drawing and interactive operation.