许多地图缩放等级。
The software consists of initialization, data collection, automated mapping, map zoom, map roam, information query, map modify, map storage and map print module.
该软件包括初始化、数据采集、自动绘制地图、地图漫游、地图缩放、信息查询、地图修改,地图存储和地图打印这几个模块。
Basing on such GIS data model, we design a GIS electronic map system, which contains most basic GIS functions, such as object-create, map zoom, wandering, query and so on.
运用此模型,设计了一个基本的GIS电子地图实验系统,实现了GIS中地图对象的创建、地图的漫游、缩放、查询等功能。
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