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。
Based on data integration technique, direct transmittance models for different temporal and spatial scales were established and the accuracy of different models was analyzed thoroughly.
运用数据集群技术，建立了我国不同时空尺度直接透射率的估算模式，对比分析了不同模式的拟合精度。
Based on data integration technique, direct transmittance models for different temporal and spatial scales were established and the accuracy of different models was analyzed thoroughly.
运用数据集群技术，建立了我国不同时空尺度直接透射率的估算模式，对比分析了不同模式的拟合精度。
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