| 地图对GIS空间数据误差的影响初探 |
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| 引用本文： | 宋军林.地图对GIS空间数据误差的影响初探[J].宝鸡文理学院学报(自然科学版),2004,24(1):70-72. |
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| 作者姓名： | 宋军林 |
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| 作者单位： | 宝鸡文理学院,地理科学与环境工程系,陕西,宝鸡,721007 |
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| 摘 要： | GIS(geography information system)数据质量是GIS研究和应用首要问题,GIS数据误差测量已成为该领域研究的热点.现有点、线、面模型都是空间数据获得后的检验模型.而GIS实践中,要根据用户提出的精度确定数据源,即首先有一个误差的限定范围,这要求分析GIS中空间数据误差的来源.地图是GIS重要的误差源,其误差与比例尺、地图概括和地图图形有关,在选择GIS数据的源地图时应综合考虑它们的影响.
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| 关 键 词： | 地理信息系统 空间数据 误差 地图 地图概括 空间数据误差 影响 spatial data error 综合 选择 图形 比例尺 来源 分析 范围 数据源 精度确定 用户 实践 检验模型 面模型 热点 误差测量 |
| 文章编号： | 1007-1261(2004)01-0070-03 |
| 修稿时间： | 2003年6月30日 |
On the effect of map on the error in GIS spatial data |
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| SONG Jun-lin.On the effect of map on the error in GIS spatial data[J].Journal of Baoji College of Arts and Science(Natural Science Edition),2004,24(1):70-72. |
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| Authors: | SONG Jun-lin |
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| Abstract: | The chief problem in the study and application of GIS is the quality of GIS data. The measurement error of GIS data has become the hotspot in the research field. The existing models of spot,line and surface in map are the testing model after the spatial data have been collected. However, in the practice of GIS, data resource is chosen according to the precision provided by GIS user, namely, a limited range of error is required first of all, it is required to analyze the source of the error of spatial data in GIS. Map is the major source of error in GIS. The error is related to the scale,generalization and graphics of map. It is necessary to take them into account comprehensively when we choose the data source of GIS. |
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| Keywords: | geography information system(GIS) spatial data error map |
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