Design And Implementation Of Spatial Data Combinatorial Collaborative Visualization Framework

The visualization of spatial data has always been a breakthrough and perfect piece of GIS.The map is an important carrier of visualization of spatial data,which is responsible for providing spatial data and graph-based analysis.With the rapid development of Internet,mobile Internet,Internet of things,cloud computing and other technologies,the construction of online spatial data visualization application has become the main way of visualizing spatial data at present.In order to quickly build spatial data visualization applications,most of the current ways are built through professional software platform,visualization library development tools,and secondary customization based on map components.These methods to a certain extent,to speed up the visualization of the application of the construction efficiency,through the combination of the map to a certain extent,the spatial data was visualized.But these construction methods,still have a relatively high operating threshold,while the construction of visual applications are related to the relevant needs of the relevant industry,custom development,the lack of reuse,it is difficult to re-transplant use.At the same time,the display of spatial data is only the traditional location of the map,the lack of dynamic expression of more visual information,the map in the entire visual application is only a geographical carrier,the lack of a deeper level of the map as a visual core of the other information s method.Aiming at these shortcomings of the current spatial data visualization construction method,this paper proposes a spatial data combinatorial visualization framework.The entire visualization application is divided into a single component,and then drag the way to the components of the free combination of custom personalized configuration components of the style,data binding and the relationship between components,and finally quickly build a map as the core,Online visualization of class information.Based on the above framework design,this paper designs the overall interface layout of the framework,which consists of three parts:component center,canvas center and message center.According to the characteristics of each component visualization,the types of components in the component center are divided in detail.Then the specific design of the framework of how the components are defined,how each component personalized configuration,how to access all kinds of data sources for data binding.At the same time,how to associate the component and the component,this paper establishes a set of communication mechanism based on "message subscription release".In addition,the map component as the core of the whole framework,this paper designed a number of personalized configuration support,with dynamic visual effects of representative map class components,and describes how the map class components dynamically associated with various types of information to achieve a Map as the core,to drag and drop as a means of rapid integration of various types of information and visualization of online applications.Finally,based on this framework,for the Wuhan parking lot business to build a "parking online visualization application".