【摘要】 同一区域上的不同类型统计通常在不同区域划分单元中进行,G IS应用中需要相互换算.为此提出了G IS中不同区划图层单元统计量换算的原则和前提条件,即在源区划图层的统计单元中区域密度均匀假设下总量守恒的原则,并以源区划图层区域应包含目标区划图层区域为基本前提条件.据此提出应用G IS矢量面状图层叠加分析和溶合技术,结合以空间数据库运算技术的换算方法.在Arcview G IS 3.2a上用geoprocessing插件和Avenue语言编程,实现了按此法进行不同区划图层单元统计量换算功能.通过对一套实验数据的测试检验,结果表明此方法是合理可行的.更多还原

【Abstract】 In the same region,statistic data collected in one kind of regionalization units sometimes need to be converted to another one.In the research the conversion can be done in the principle of density uniformity in unit and quantity conservation,so as to meet the condition that source theme area contains target theme area.The paper introduces a method and a utility conversion process based on Arcview GIS 3.2a,with spatial analysis technology as overlay,dissolve and area measure,by ArcView programming and using its "geoprocessing" extension.The test confirms that this conversion method is reasonable and feasible.更多还原