The spatial analysis, including topological analysis, overlay analysis, buffer analysis and so on, is achieved.
实现了图形对象的拓扑分析、叠置分析和缓冲区分析等空间分析功能。
The distribution and area change data of desert reclamation in Minqin Basin during last 40 years were obtained by overlay analysis and area statistic in GIS.
利用GIS软件进行迭加运算处理并进行面积统计，获得民勤盆地40年来荒漠垦殖位置变化图和面积变化数据。
The distribution and area change data of desert reclamation in Minqin Basin during last 40 years were obtained by overlay analysis and area statistic in GIS.
利用GIS软件进行迭加运算处理并进行面积统计，获得民勤盆地40年来荒漠垦殖位置变化图和面积变化数据。
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