The Reserch On Web Service And Its Composition Of Data Visualization

Along with the rapid development of Internet technology and application, the pattern of internet application has developed from initial pattern of web pages and web application to the web service. At present, the pattern of distributed computing based on the web service is becoming the tendency of technological development. There are some problems in the development of visualization technology. The one of the problems is as follows. At present, the achievement of data visualization has merely been on the local resource or the single resource, and didn't make use of the development of distributed computing. Such software didn't make full use of internet resources, so it has a low speed. Thereupon, it is a way to solve the peoblem undoubtly by relating the visualization to web service. The purpose of this article is right to implement the web service of visualization. The fuction of the single visualization web service is very limited. In order to make full use of these web services, this article reserch how to compose these web services for supplying more stronger service function.The data formats are varied. This topic mainly visualize the data output from Ansys, because of the Ansys is widespread application large-scale CAE general finite element analysis software in project domain, which has the practical significance. This reserch has the very good modelfunction to other irregular data. We will use the VTK—a very good visualization toolkit, to implement the visualization web service. The work in this article is as follow:1. By comparing the differences between the data output from Ansys and VTK data, implement the trsansformimg from the fore one to the back one.2. Design some appropriate visualization web services and compose these web services based on characteristic of the visualization pipeline in VTK.3. Release the visualization web service on Axis and conbine these web services according the requestion of visualization, the purpose of which is to visualize the data output from Ansys. Theremore comparing the result to the Ansys's, confirm the Accuracy of visualization based on the Web technology. In this article, introduces the web service and its characteristic of composition in the second chapter; introduced how to use VTK to carry on visualization in the third chapter; explained the data file format output from Ansys in the fourth chapter; design the visualization web services and their composition in the fifth chapter; implement the visualization web service and display the result by the examples in the sixth chapter; finally, conclude the work of this article, point out the defect of the work and forecast the work in the future.It is full of challenge to unify the visualization technology with the web service, which will be one key of correlation research area.