地理信息系统专业论文—基于GIS平顶山市公交.doc

毕 业 设 计 [论 文] 题目：基于GIS的平顶山市公交 线路最优路径运算研究 摘 要 城市的发展日新月异，许多新建小区大量出现，公交线路也日渐增多，给人 们的出行带来了极大便利，但是由于城市规模的不断发展，给人们选择出行乘车 线路造成一定的困难，特别是在旅游城市，游客在乘公交车时选择线路比较困难， 因此，开发智能化的城市公交信息查询系统非常必要，它不仅可以给市民游客的 乘车提供向导，同时可以对外展现城市的现代风貌，体现出一个城市公交信息数 字化和信息化的发展水平。 基于 GIS的空间数据库技术, 可以对公交实体要素进行详细表述, 为精确计算换乘延误提供了可能。以平顶山市公交系统为实例研究对象, 建立了基于 GIS的公交网络数据库, 应用可行的基于换乘次数最少的最优路径算法, 在 ArcGIS中实现了任意两点间的最优路径查询。 关键字: 公交网络; 最短路径算法; 数据模型; 公交换乘; ArcGIS Abstract The city development changes with each new day, many newly built plots massive appearances, the public transportation line also day after day increases. Went on a journey for the people has brought the enormous convenience, but as a result of the city scale unceasing development, chooses for the people goes on a journey rides in a carriage the line to cause the certain difficulty, specially in the traveling city, the tourist is riding the public transportation vehicle hour choice line quite to be difficult. Therefore, the development intellectualization city public transportation information inquiry system is extremely essential. It not only may give the resident the tourist to ride in a carriage provides the guide, at the same time may foreign unfold the city the modern style, manifests a city public transportation information digitization and the becoming an information based society level of development.Based on GIS spatial database technology, transit features can be represented in detail , which providespossibility for precisely evaluating transfer impedance. Taking Wuhan transit system as an example, a prototype transitnetwork database is constructed based on GIS. With special considerations on travel and transfer distance, an improvedoptimizing algorithmfor transit travel is developed in ArcGIS. Key words : transit network; optimal route algorithm; data model; transit transfer; ArcGIS 目 录 1 绪论 1 1.1 本课题的目的及研究意义 2 1.1.1 研究目的 2 1.1.2 研究意义 2 1.2 本课题的国内外研究现状 3 1.2.1 国外研究现状 3 1.2.2 国内研究现状 3 2 地理信息系统工程的一般开发方式 4 2.1 概述 4 2.2 设计模式 4 2.2.1 结构化设计模