高精度地图符号编辑器的设计与实现

Design and Implement of High Precision Map Symbol Editing Tool

地图符号给予地图极大的影响,它决定着地图内容能否充分表达,决定着地图是否便于阅读和使用,决定着地图信息的传输效果,而且地图符号的精度直接影响地图表示内容的准确性。结合地图符号理论,详细分析了点状符号、线状符号和面状符号的结构特点,提出了地图符号编辑器的设计方案及相应的关键算法,并且分别给出了控制点符、线符和面符精度的措施,实现了地图符号的高精度制作,而且设计的符号编辑器具有良好的封装性、可维护性和可适应性。

Map symbol had great influence on the map, which decided whether the map content fully expressed and whether the map was well read and used. It also decided the transmitting effects of map information. And the precision of the symbol affected the veracity of the map directly. Based the theory of map symbol, this paper analyzed the structure of dot symbol, liner symbol and area symbol in detail, then put forward the projects of map symbol editing tool and pivotal arithmetic, and gave some measures to control the＇precision of dot symbol, liner symbol and area symbol. Therefore high precision map symbol was made. Furthermore the editing tool had good capability of encapsulation, adaptability and maintenance.