论述了制订面向GIS数字地图标准的必要性和紧迫性，探讨了面向GIS数字地图的特点，最后提出了一种面向GIS数字地图的数据结构。
This thesis deals with the necessity of establishing the standards of the digital map of GIS, discussing the characteristic and brings about a data structure of the GIS-oriented digital map.
论述了制订面向GIS数字地图标准的必要性和紧迫性，探讨了面向GIS数字地图的特点，最后提出了一种面向GIS数字地图的数据结构。
This thesis deals with the necessity of establishing the standards of the digital map of GIS, discussing the characteristic and brings about a data structure of the GIS-oriented digital map.
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