可以利用已有的基于单一比例尺的GIS数据库中的基础地理数据，通过自动制图综合生成多比例尺数据。
Can utilize the geographical data of foundation in existing GIS database based on single scale, produce mult-scale data synthetically through automatic cartographic generalization.
认知理论是传统地图制图学领域的基础理论，该理论在地理信息系统中的作用机理和表现方式值得探讨。
It is really worthwhile to discuss something about the cognition theory which is the basic theory of the traditional cartographic field.
以综合地理学、地图制图学、关系代数为理论基础，可以用分析组合法、综合法进行基本信息元制图。
Research region can be mapped into series BP under the principle of synthetic geography and cartography.
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