矢量栅格一体化数据结构设计与应用

针对如何在“3S”集成过程中选择良好数据结构的问题，通过分析矢量数据结构与栅格数据结构的优缺点，以二级划分策略建立具有两种结构优点的矢量栅格一体化数据结构，使空间数据在栅格化的同时能满足矢量精度要求，并给出其逻辑表示。在此基础上，讨论基于该数据结构的空间数据采集与叠加分析策略。

Design and Application of Integrated Raster and Vector Data Structure

In the process of integrating “3S”, the choice of a favorable data structure is the key point. This paper analyzes the advantages and disadvantages of both vector and raster data structures, and builds an optimal data structure based on the secondary dividing strategy, which merges the advantage of simultaneity vector and raster and can fulfill the requirement of vector data accuracy. It gives a logical representation of this data structure, and rasterizes the space data simultaneity. Based on that, it discusses the strategy of the collection and overlay analysis of space data based on this data structure.