基于控制规则的地图符号化技术研究

在数字地图符号化过程中,普遍存在着同一种地理要素由于其某一属性项取值的不同而采用不同的地图符号进行符号化的情况。另外,由于数字地图中没有记录说明注记的位置、字体、颜色、方式等相关信息,因此说明注记在符号化过程中缺乏定位和显示的相关依据。为了灵活、有效地解决上述问题,总结并提出了地图符号化控制规则,通过对控制规则的解释来实现数字地图的符号化。这种地图符号化技术已在实际应用中取得预期的效果,证明了其可行性。

Research of the Digital Map Symbolization Based on Controlling Rules

During the process of digita map symbolization,it is commonly seen that one geographic feature may adopt different map symbols according to the different values of one attribute.Besides,it is difficult to symbolize annotation texts because their positioning,font,color,and other information are not recorded in digital maps.In order to solve the above problems,map symbolization controlling rules were summarized and suggested through which digital map symbolization could be effectively accomplished.The applica...