基于要素编码的基础地理数据库的构建及DLG自动入库的实现

FUNDAMENTAL GEODATABASE DESIGN AND DLG DATA IMPORTING BASED ON FEATURE CODE

鉴于地理要素分类与编码在地理信息组织、数据转换等方面的应用作用,提出基于地理要素分类与编码的基础地理数据库构建策略,并借助Geodatabase按照现行分类原则在大类上构建要素数据集,在中类上构建要素类。在此基础上,建立要素分类编码与要素类的映射机制,将其应用于DLG数据入库软件开发中,并通过ArcGISEngine和ObjectArx两者无缝结合开发数据转换接口嵌入AutoCAD进程中得到体现,从而实现DLG数据自动、高效地入库。

According to the value of the classification and coding of geographic features in these aspects, such as organization of geographic information, data conversion, etc. , a strategy was brought forward which could construct fundamental geographic database. In accordance with the principle of the present geographic feature classifi- cation, feature datasets were built in the major categories, and feature classes were built in the middle categories with geodatabase. On this basis, the mapping mechanism was established between feature classification code and feature class, and it was used to develop the DLG data software. Through the seamless integration between ArcGIS engine and ObjectArx, this software embedding in the process of AutoCAD was realized, and it can realize the warehousing of DLG data automatically and efficiently.