針對等值線制圖的主要問題，采用UML(統一建模語言)建立可視化信息模型，反映了基于GIS 的等值線圖的主要組成及關鍵制圖過程，指導了基于GIS 的制圖系統開發；采用ArcEngine9.1軟件和C#.NET 開發環境解決了工程地質中各種類型的等值線動態生成和復雜標注等制圖表現問題，實現了原始數據管理、空間插值計算和制圖表現等的集成應用。
關鍵字：統一建模語言；地理信息系統；空間插值；等值線圖
Abstract: In order to solve problems of isograms production, visual information models of engineer geological isograms is created by Unified Modeling Language. The models can reveal the parts and internal relationship, and analyze critical process of isograms production, which contribute to development of mapping system based on GIS platform. Guided by the models, a mapping system of engineering geological isograms is designed and realized on C#.NET and ArcEngine9.1. The system can produce dynamically kinds of isograms and complicated mapping elements, and realize integration application of source data management, spatial interpolation and mapping representation.
Key Words: UML；GIS；Spatial Interpolation; Isograms