City Bigdata 3D Visualization and Analysis Based on Webvrgis Platform

This paper shows the multiple types of data overlying the WEBVRGIS platform about Shenzhen over a 3d globe. There is an overwhelming amount of information that can be visualized with this platform, and great flexibility to access the different available data sources is achieved through GIS-based navigational scheme. For example, at stations, visualizing forecasted  and historical passenger volume could be of great help when it is overlaid with other social data. Today, there is a great scope for Virtual Reality Geographical Information System (VRGIS), through which the landscape geospatial data can be dynamically obtained and rich visual 3D analysis managements and calculations based on Geographical Information System (GIS) data can be performed. WebVRGIS is so called the web version of VRGIS. The utilization of big data has become a hot research topic nowadays. GIS data has several characteristics, such as diverse predictions and real-time, large scale, which falls under the definition of Big Data. Besides, the city planning has an increasingly high demand for the realistic display of VR system to improve the accuracy of modeling. But, this will lead to the growth of the volume of data inevitably. Virtual scene from a single building to the city scale also results in the increased amount of data. Also, new user interfaces for geo-databases is also expected beside spatial data integration. Hence, the development and management of city big data, using virtual reality technology is an inspiring and promising approach.  Most commonly used functions of VRGIS are improved according to practical needs. All the presented functions in our platform are extracted from the practical customer needs. Some early related systems from both industry and academy have inspired our work.