The Map Symbol base System is one of the indispensable base functions in Electronic Map System.
地图符号库系统是电子地图系统中不可缺少的功能模块之一。
The technique route is studied of renewing of GIS foundation map base, combining with the renewing of foundation map base to the urban geography information center of Changzhou planning bureau.
本文主要结合对常州市规划局城市地理信息中心基础图库的更新，探讨对城市GIS基础图库更新的技术途径。
The technique route is studied of renewing of GIS foundation map base, combining with the renewing of foundation map base to the urban geography information center of Changzhou planning bureau.
本文主要结合对常州市规划局城市地理信息中心基础图库的更新，探讨对城市GIS基础图库更新的技术途径。
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