| GIS中图形数据的可靠性评价 |
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| 引用本文： | 刘文宝,戴洪磊,邓学钧. GIS中图形数据的可靠性评价[J]. 东南大学学报(自然科学版), 1999, 29(2): 111-115 |
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| 作者姓名： | 刘文宝 戴洪磊 邓学钧 |
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| 作者单位： | 山东矿业学院 |
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| 摘 要： | 基于数字地图要素位置特征的数学模型，将Ｂａａｒｄａ的可靠性理论扩展的应用于ＧＩＳ空间数据库中图形数据的可靠性评价。针对点，线，曲线三种基本数字制要素，导出了相应的可靠性公式，并获得了可靠性分布的三角形和梯形图。
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| 关 键 词： | 地理信息系统 图形数据 可靠性 GIS |
GIS中图形数据的可靠性评价 |
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| Liu Wenbao Dai Honglei Deng Xuejun. GIS中图形数据的可靠性评价[J]. Journal of Southeast University(Natural Science Edition), 1999, 29(2): 111-115 |
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| Authors: | Liu Wenbao Dai Honglei Deng Xuejun |
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| Affiliation: | Liu Wenbao 1 Dai Honglei 2 Deng Xuejun 3 |
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| Abstract: | Based on the mathematical model on the positional features of the digit terrain condition, this paper extends the Baarda's reliability theory to assess the reliability of graph data in GIS database. The paper derives the reliability formulas according to three basic digit drawing features of the corresponding point, line and curve, obtains the triangle and trapezoid images of the reliability distribution. Through the analyses of some road layer's data in GIS spatial database of one city, the paper illustrates the concrete methods about how the achievement is used in application. |
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| Keywords: | GIS graph data reliability |
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