A Practical and Light Integrated WebGIS Based On SVG

With the development of GIS, all kinds of GIS systems are applied to different domains, such as location, oil exploration, traffic and so on. The traditional GIS only provides basic GIS functions, whereas, in practice, the users wish to integrate their applications into GIS. If traditional GIS is employed for integrating applications, it must employ the APIs to develop application-based-on-GIS. In spite of this it is difficult to integrate applications into GIS seamlessly .Therefore, a novel light and practical integrated WebGIS framework is proposed. Firstly, it gives the organization form of all kinds of space GIS objects; secondly, through SVG various space GIS objects are mapped into SVG DOM document; thirdly, by means of SVG, map layers´ management is implemented; fourthly, a kind of efficient decentralized GIS objects loading algorithm is proposed; fifthly, many meta-models which are used to describe all kinds of resources constructed by meta-data; finally, a kind of running frame for WebGIS is given. It is well known that oil and gas is nation vitals, and oil field accumulates amount of business data. How to integrate these different specialties´ data into WebGIS puzzled oil field users. The WebGIS framework which integrated kinds of specialties´ applications has been applied to Daqing oil fields, different users can expediently query their own interested information by GIS navigation. The practical application shows that integrated WebGIS framework is not only applicable for users, but also high efficiency for map operation. The light WebGIS framework and its novel idea also can be applied to other domains.