This paper analyzes the rule of composition of a map of 3d statistic map symbols. They are divided into three kinds: simple symbols, compound symbols and combination symbols.
分析了三维统计地图符号的构图规律，并将其分为简单符号、复合符号和组合符号3类。
Statistic symbol is one type of the most welcomed and most popularly used map symbol.
统计符号是地图制图中最受欢迎和最为广泛应用的地图符号之一。
Putting forward the change statistic method based on acreage, and counting the varieties of vector map data by using polygon intersection of vector data and changed pixel of raster data.
提出基于面积的变化统计方法，分别利用矢量数据的多边形交集和栅格数据的变化像素来统计地图矢量数据的变化。
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