| The purpose of information visualization is to explore diversified data,to display the characteristics,objective laws and implicit information of data intuitively.The combination of GIS visualization and information visualization technology can make full use of the ability of GIS mining space information and information visualization to display the advantages of non spatial information.At present,combining GIS technology and information visualization technology,the function of tool library for visualization of geographic information is not perfect,especially the GIS visual chemical tool library which is encapsulated by Web component-based thought still needs further studied and implemented.Based on the research of different Web front-end visualization technologies,this paper designs and implements a GIS oriented multi-dimensional spatio-temporal Web component chemical tool library with the guidance of information visualization theory and method.Based on the React.js open source front-end framework,the tool library uses the idea of modularization and component-based in modern front-end technology.It encapsulates third party front-end map library,visual class library and custom visualization class into independent Web components,and realizes visualization of basic information visualization and spatial analysis for multi-dimensional spatiotemporal data.These components communicate through their state and attribute variables or through a custom event management mode based on the publish subscribe pattern,so that the tool library has the characteristics of module independence,expansibility,support for multi view Association and rapid construction of the system.Finally,taking the database platform of the Changjiang Economic Belt as an example,this paper discusses how to build a basic social and economic data visualization system by using the tool library,and explores the correlation and interaction of the multi view visualization module. |
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