地籍管理信息系统中两个重要问题的探讨

为了实现地籍图的内外业一体化，地籍管理的信息化、自动化、研究了地籍管理信息系统中有关程序设计的两个关键问题：曲线边界和线状符号的程序设计方法，提出了曲线边界的主要绘制方法，即采用抛物线参数样条算法；同时对于地籍图上容量比较大的线状符号的绘制，提出了自己的设计思想，即把线状符号分解成各种不同的线符，构建一个完整的信息库，在成图过程中需要某种线状符号时，可以直接从信息库中调取并加以组合。结论证明，此法可以提高成图速度，简化成图手续，促进地籍管理的信息化、自动化。

Discussion of two important questions about the cadastral information system

To achieve the cadastral map's internal and external continuous assignment as well as the cadastral information management and automation, the article studies two important problems, namely the programming method of curve and the programming method of symbol of line in the cadastral management information system. It puts forward the main drawing methods on curve boundary, namely the parabola parameter pattern calculating methods. A new programming idea of drawing the large amount of curve symbols on the cadastral map is proposed. This new idea suggests to break up curve symbols into all kinds of basic symbols to compose a complete message storehouse. When you need a certain curve symbol, you may directly obtain it from the message storehouse and compose it. The results indicate that it may raise the speed of drawing, simplify procedures, and promote information development and automation in cadastral management.