The base frame of spatial data controls the accuracy, unity and practicability of the data.
空间数据基准框架决定了空间数据的准确性、统一性和实用性。
Because of large amount of spatial data in this operation, it is a critical technique in GIS about how to realize spatial overlap analysis very quickly with higher accuracy.
由于空间数据量较大，如何快速准确地完成空间叠值分析运算是GIS系统中比较关键的技术。
Absrtact: spatial data editing is an important part of cartography, and spatial data moving and node operation may affect the accuracy of the map.
摘要：空间数据编辑功能是地图制图中的重要组成部分，当进行多个空间数据移动以及进行结点操作时，会影响地图精度。
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