Country Point: the abstraction symbol of the country on the map.
国家点：国家的抽象化代表符号，用来代表地图上的国家。
2
On the base of analyzing the character and structure of the point, line, area symbols, a data structure of mapsymbol base which serves the symbolized output in digital mapping is put forward.
On the basis of the visual variables of mapsymbol and the represent grade of map elements, this paper introduces the inference model of pointsymbol design in map design Expert System.