Design And Realization Of Visualization System Of Agricultural Statistical Data

With the rapid advancement of China's agricultural informatization process,a large amount of statistical data has been accumulated in the agricultural field.How to further integrate and make use of existing multi-source heterogeneous agricultural data and tap the potential value of data become an important issue for agricultural research.Make use of the data visualization technology to transform data into recognizable graphical symbols,images,videos,and other information,It can reveal invisible or hard-to-visually display data information,and provide new observation methods for people to perceive potential laws of things.The current agricultural statistical data resources are scattered,the presentation methods are relatively simple,and there are no interactive means,users cannot perform custom interactive visual analysis on the basis of existing visual charts.In this paper,according to the characteristics of multi-source heterogeneity of existing agricultural statistics and the single data presentation method,the acquisition of data from different sources is realized by using web crawler technology,and the B/S-based agricultural statistical data visualization platform is implemented using the Django framework and Html,CSS,and JavaScript technology and other technologies.The main tasks include the following three points:(1)Collection of agricultural statistical data.By studying the implementation of the existing web crawler technology,aiming at the scattered and inconsistent resources of agricultural statistics data on the Internet,based on the general web crawler technology and framework,the corresponding web crawlers are designed to crawl data resources.(2)ETL processing of data resources.Based on the characteristics of different datasets and data visualization requirements,The system has completed the data cleaning,conversion and integration of the original collected data,providing data resources for the visual display of data.(3)Design and implementation of the visualization system.Based on the Django web framework,the Web visualization system of agricultural statistics is designed and implemented.The system displays the collected data resources and provides the resource download interface.The system makes use of Tableau visualization tool and Echarts library to realize the chart visualization of data,and provide dynamic interaction function for charts.By collecting and processing multi-source and heterogeneous agricultural statistical data,a Web visualization system that can provide data graphs is designed and realizedbased on the data resource of processing,the system realizes diversified display of data and dynamic interaction of graphs.