Design And Implementation Of Data Visualization Tools

In the era of big data,data visualization gained more and more attention and developed rapidly because of its graphical display of data and the discovery of internal relations,the rapid development of Internet technology also makes web service applied more and more widely.Although data visualization get rapid development in recent years,the current data visualization tools mainly use local resources or a single resource,which makes visualization technology is not enough and the image effect appears to be single.If we can combine data visualization with web service,make full use of visualization service of web service on the Internet,we can realize the diversity of visualization technology and the image of diversification.The visualization tool designed in the thesis was based on that idea.The tool developed based on Service Creation Environment,called SCE,which made users build process for data visualization quickly and display the image as the results.The process built can invoke web services in the cloud and make full use of visualization resource on the Internet.The tools provided two kinds of visual way,one was visualization generation based on the BPEL component,another one was visualization generation based on template.In the first way,users built the visualization process by BPEL component,invoked and integrated the web service of visualization from third-party,which made the visualization full of diversification.The advantage of this approach was that users do not need to know more about coding and visualization,only you need to drag and combine BPEL components in the generation page,invoke web services in the cloud,you can achieve data visualization.Compared with the first way,the second one was more conveniently on operation and shielding the details of the set up of visualization process.This way of visualization generated on the basis of common visual generating process,encapsulated common visualization technology of different data types,such as the template of Tag Cloud based on the Spiral Detection Algorithm,the template of Parallel Coordinate and the template of Tree Map based on the Pivot Algorithm were built successfully.Only by inputing visual requirements and filling attributes of BPEL component,the tool will provide appropriate visual template and realize the visualization of data.The thesis described the background of data visualization tool firstly,and did some research about visualization techniques and the status.Next,starting from the overall goal of the tool,the thesis did needs analysis for data visualization tool,resolved some key issues like data processing,and designed for architecture of the tool,described typically generate mechanisms and interactive of modules.After that,the thesis described how the core modules achieved in detail.Finally,the tool is fully tested to verify the correctness and completeness of the system.