Study on coal bed spatial data types based on set theory 基于集合论的煤矿床空间数据模型研究
Dynamic and multi - dimensional spatial data modeling : models and methods 空间数据模型与方法的研究
3d modeling methods and spatial data model of layered rock - mass 层状岩体三维构模方法与空间数据模型
Research on spatial data model of pipelines network underground city geographical information system 城市地下管网地理信息系统空间数据模型研究
And all kinds of spatial data models which are the basis of algorithm on visualization are discussed 并研究概括了当前流行的二维、 2 . 5维、三维各类空间数据模型与数据结构。
And three kinds of spatial data model : pillar model , tin face model and section model , were built up for these three kinds of rock - mass 并通过模型实例验证了构模方法与空间数据模型的可行性。
In this paper , we focus our research on spatial data model and visualization techniques on the basis of spatial database in 3d gis 本文以空间数据库为基础,主要研究三维gis中的空间数据模型和三维可视化技术。
Data is the basis of sanulation . relational data model and ~ al datu modl are described , and its realhation is discussed , too 数据是仿真的基础,本文对关系数据与空间数据模型进行了描述,并讨论了它们的实现。
Discusses the method of developing a component based on the presented model in detail and develops a component with some basic functions . 4 完整地描述了基于构造点集的空间数据模型的控件实现方法,并实现了该控件的基本功能。
In addition to an ample research on concerning national software and information material , this article discussed the establishment and application of spatial data model by adhering to practical design and research 本文结合昆明市综合地下管网信息系统设计和开发的实际工作,探讨了地下管网空间数据模型的建立和应用。