基于不同约束条件的地图符号定义的数学定义

Mathematical Definitions of Map Symbols Based on Different Bind Conditions

地图符号qgf(x)是制图对象x在f、g、q三重拓扑映射下的象。根据制图对象在现实中存在与否定义了模拟与虚拟地图符号;根据地图符号与地图比例尺相关、无关或半相关的质,定义了依比例符号、不依比例符号和半依比例符号;根据地图符号定位部的几何特征定义了点状符号、线状符号和面状符号。

Map symbol qgf(x) is a image of mapping object x under three times topological mapping f, g, q. According to mapping object is in actuality existence or not the authors have defined the imitative and virtual map symbol;according to map symbol with map scale relate, not relate or semi-relate have defined the scale symbol, non-scale symbol and semi-scale symbol;according to the geometry character of map symbol location part defined gave the point map symbol, Line map symbol and area map symbol.