1·Many maps have been created and used, but during the beginning of the GIS era map quality was not always acceptable.
许多地图已被创建和使用，但是在地理信息系统初期，地图的质量往往不能被接受。
2·Data organization and processing serve as the base of the digital mapping, and the USES of its methods are the important contents for building GIS.
数据组织及处理作为数字化测图的基础，其方法的应用是地理信息系统建立的重要内容。
3·There is no doubt the rapid urbanization of Florida's coastline far outpaces the available GIS land use maps.
毫无疑问在快速城市化的佛罗里达州的海岸线远远超过现有的地理信息系统的土地利用图。
4·The popularity of GIS has had a great impact on maps.
地理信息系统的人气在地图上已经有了很大的影响。
5·Analyzing the source of spatial data and improving the quality of spatial data are the precondition of building GIS.
分析空间数据来源、提高空间数据质量是建立地理信息系统的前提。