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???????????????????????????????????????????????????????????????????????????????????????????????????Geodatabase???????з????????????????????????????????????????????????????????????????????????????????????????DLG???????????????У??????ArcGIS Engine??ObjectArx?????????????????????????AutoCAD?????е?????????????DLG???????????Ч?????

FUNDAMENTAL GEODATABASE DESIGN AND DLG DATA IMPORTING BASED ON FEATURE CODE

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 classification, 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.