中文摘要：

根据地图表达的特点,将地理空间信息抽象表达为二元结构,即反映语义属性及空间位置属性的地理要素和要素间空间关系;利用代数结构形式,在地理空间数据库和地图中分别构建表达地理空间信息的地理要素空间和地图要素空间;地理要素空间中的空间关系是基于欧式空间原理建立的,而地图要素空间中的空间关系则是用视觉模型来刻画。据此,提出以地理要素为对象的从地理要素空间向地图要素空间转换的制图模型。通过定义符号单元同核变换将目前制图过程中的符号化过程从面向地理要素类层延展到面向地理要素实例层,克服统一符号化过程不能同时满足共性和特性要求的矛盾;定义的地理要素有效移位变换可使地图制图过程更加流畅,减少中间人工干预过程。

英文摘要：

A cartographic model being put forward characterizes the process of map-making by a transformation from geographical space to map space based on an algebra structure,and provides with a theoretical foundation and operational guideline for this merging technology.According to cartographic presentations of geo-spatial data in topographic maps,geo-spatial information is abstracted into two elements： geo-features and spatial relationships between the features,and further structured in form of algebra into two algebraic spaces： geo-feature space in a geo-databases world and map-feature space in a map world respectively.The spatial relationships in geo-feature space are modeled by Euclidean space and the spatial relationships in map-feature space are calibrated by the visual cognitive mechanism.The cartographic model is built up by transforming geo-features into map-features which is restrained by the consistent spatial relationships in the two spaces.By defining an equivalent-kernel transform among symbol cells,a map symbolization for feature classes is extended for feature instances,fitting cartographic representations being both specified and universalized.With defining the displacement transform for geo-features,the process of map-making proceeds more smoothly,reducing being intervened to a large extent.