地理信息与制图信息的表达方式之间既有区别又有联系。为了实现两种信息的一体化表达,从制图的角度出发,设计了一种基于单要素的制图数据模型,并在此基础上提出了一种地图制图表达方法;最后以该制图表达方法为基础,给出了制图信息的增量式更新方法。
There is difference and relativity between geographic information expression and cartographic information expression.In order to express the two kinds of information by an integrative method,a cartographic data model based on single feature was designed from the view of cartography,and then a cartographic data organizing mode was presented.Finally,incremental updating method for cartographic information was put forward.