摘要
为了将AutoCAD格式的大比例尺地形要素依据地理信息数据字典及要素分类与代码标准完整无损、快捷的入库,文中基于ArcGIS和i Data技术对地形图数据的处理与入库做了对比分析。ArcGIS基于桌面编辑环境ArcMAP进行空间数据入库,i Data以ArcGIS平台中Personal GeoDataBase形式建立地理信息数据库实现DWG转MDB。结果表明:ArcGIS基于图形端编辑处理,对于数据的处理修改省时省力,但是入库后需在GIS平台进行拓扑检查,对编程要求高且增加了工作的重复率,数据容易丢失。i Data基于数据库端的入库技术,自定义数据转入方案,一键式CAD数据到MDB数据库的实现,能有效避免数据转换过程中要素和属性丢失的问题;图库一体化的作业模式,避免了数据重复生产问题。因此,在相同数据量和更新域的情况下,i Data数据处理与入库效率更高。i Data采用图库一体化作业模式,有效的避免了数据转换入库过程中数据的丢失、变形、属性结构不一致等问题,实现了数据的无缝转换。
In order to integrate the large-scale terrain elements of AutoCAD format into the library without loss of integrity and speed according to geographical information data dictionary and factor classification and code standards, the processing and storage of topographic data are compared and analyzed based on ArcGIS and iData technology. ArcGIS is based on the desktop editing environment ArcMAP for spatial data storage. iData establishes a geographic information database in the form of Personal GeoDataBase on the ArcGIS platform to achieve DWG conversion to MDB. The results show that iData is more efficient in data processing and storage under the same data volume and update domain. iData adopts the integrated operation mode of the map library, effectively avoids the loss, deformation, and inconsistent attribute structure of data during the data conversion process, and realizes the seamless conversion of data.
作者
韩海忠
何晓琳
HAN Haizhong;HE Xiaolin(Basic Geographic Infomlation Center of Qinghai,Key Laboratory of Geospatial Information Technology and Applications of Qinghai,Xining 810001,China)
出处
《青海大学学报（自然科学版）》
2018年第5期52-58,71,共8页
Journal of Qinghai University(Natural Science)
