Design and Implementation of Bi-direction Real-time Traffic Electronic Map

摘要

Information integration based on GIS is the key of digital city. Taking the integration of real-time traffic information and basic geography data as an example, the model of data storage, data illustration and information display were analyzed. Data was stored in TAB format, and was read and written using Mitab open source library. VGLibrary was developed based on MiniGUI to draw vector graphics, e.g. symbol, parallel polyline, polygon. At last, the application has functionality of viewing, roaming and zooming an electronic map. The design takes loose coupling method and efficiently integrates other information with basic geographic data.