網際地理資訊系統設計-以台灣地區公路資訊為例

Abstract

本文利用視覺語言及物件導向的概念設計一套網際地理資訊系 統,此系統包括地圖及資料兩子系統.地圖子系統包括網格圖(bitmap)的圖 層劃分與建檔,資料子系統包括關聯圖的設計.使用者利用系統所提供的圖 層及資料關聯圖即可由網路上查到所需的地圖與資料.本系統將以台灣地 區公路資訊的查詢為例,說明此網際地理資訊系統的人機界面設計,建檔查 詢與管理方式. This paper propose an Internet geographical information system(GIS)by using visual language and the concept of object- oriented design method.This system consists map sub-system and data sub-system. The map sub-systemincludes the management of map data, querying of map attributes, and datastructure of the map files. The data sub-system includes the design of entity- relationship diagram for data retrieval. Users can query data directedfrom the map and by using entity-relationship diagram. This paper will focuson the user interface design, querying method, and the management of mapfiles. The system is designed by using Taiwan road information as an example.