7. Spatial Data Management

Introduction: This chapter introduces the spatial database, the comparison with the general database and the storage mode of the spatial database。

然后介绍了GIS中两种重要的数据结构: 栅格结构和矢量结构,以及其具体的存储方式,然后比较了两种结构的特点,并给出了其相互转换算法。

最后介绍了空间检索中常用的技术——空间索引,介绍了一些常用的空间索引方式, 如BSP树、R树、CELL树等; 以及空间数据的查询功能。

  • Spatial database

    Spatial database The composition of an information system and its database depends on the application purpose, data type and w...
    2023-08-23 01:42:50 UTC
  • Raster data structure and its coding

    Raster data structure and its coding Raster data structure Definition Grid structure is the simplest and most direct spatial...
    2023-08-23 01:42:50 UTC
  • Vector Data Structure and Its Coding

    Vector Data Structure and Its Coding Vector Data Structure Definition Another common graphic data structure in Geographic In...
    2023-08-23 01:42:50 UTC
  • Comparisons and conversion algorithms of vector grating structures

    Comparisons and conversion algorithms of vector grating structures Comparison of raster structure and vector structure The ra...
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  • Spatial indexing mechanism

    Spatial indexing mechanism Index concept An important research area of raster-vector integrated spatial data structure is how...
    2023-08-23 01:42:50 UTC
  • Spatial Information Query

    Spatial Information Query At present, the query function of most mature commercial GIS software can perfectly realize the simp...
    2023-08-23 01:42:50 UTC
《地理信息系统原理、技术与方法》  97

最近几年来,地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持,如城市管理、区划、环境整治等等,地理信息成为信息时代重要的组成部分之一; “数字地球”概念的提出,更进一步推动了作为其技术支撑的GIS的发展。 与此同时,一些学者致力于相关的理论研究,如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面,并且这两个方面构成了相互促进的发展过程。