主要论述了格网的基本概念，着重对空间信息格网进行了分析和阐述，初步描述了空间信息格网的组成、结构体系和应用方法。
The paper firstly discusses on the basic concept of grid, specially analyses the spatial information grid, and briefly describes the composition, structures and applied method.
文中论述和分析了网格、空间信息网格和地图上的格网等概念。
This paper discusses and analyzes concepts of grid, spatial information grid, mesh on the map and so on.
其二是首次应用格网图的数据驱动方法和空间分析相结合对湘江流域长沙段的钉螺螺情信息进行了分析。
The second feature is that it is the first time to analyse the snail information of the Changsha segment of Xiangjiang river with the data-driven and spatial analysis methods.
其二是首次应用格网图的数据驱动方法和空间分析相结合对湘江流域长沙段的钉螺螺情信息进行了分析。
The second feature is that it is the first time to analyse the snail information of the Changsha segment of Xiangjiang river with the data-driven and spatial analysis methods.
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