Research On Time And Space Analysis And Application Of Anti-pyramid Selling Crime Based On GIS

As a cancer formed in the development of our socialist economy,pyramid selling crime has caused serious adverse effects on the healthy development of our market economy.With the development of the Internet and the combination of GIS and Web technology,the visualization of GIS has become more and more diversified,the display way is more beautiful,and the speed of accessing and processing data is more efficient.This paper summarizes and summarizes the research on pyramid selling crime at home and abroad,and analyzes the time and space of Jiangxi Province's pyramid selling crime information from 2014 to 2017.The technology of Web is used to render the criminal information of MLM,and the graph is used to visualize it.The main research results are as follows:(1)The nearest neighbor index method is used to identify the case points of MLM crime,which proves that the MLM crime cases are clustered and distributed in space.The two-dimensional nuclear density estimation is used to display the criminal cases of MLM from 2014 to 2017,and the distribution characteristics of MLM crimes in Jiangxi Province are analyzed and explained.The spatial distribution of MLM crimes is analyzed on a yearly and monthly basis.It can directly show which areas have the most hot cases,and carry out spatial cluster analysis in Ganzhou C ity,which provides a supplementary role for cracking down on pyramid sel ing crime.(2)By using the view of visualization of pyramid selling crime information combined with the technical characteristics of WebGIS,this paper discusses and analyzes the key technologies needed to realize the realization of pyramid selling crime visualization information system.Select the relevant map engine technology which is suitable for pyramid selling crime data visual display.At the same time,the data rendering problem of pyramid selling crime information visualization is realized.The current front-end Canvas technology combined with the technology of thermal graph rendering is applied to realize the visualization of pyramid sel ing crime information.(3)In the aspect of displaying the visualization of pyramid selling information chart,the advantages of combining Echarts chart technology with Heatmap.js framework are discussed and analyzed Combined with the above technology,the frame design of the whole system is carried out,and the linkage display front-end system based on Web front-end frame,map and dynamic chart is realized.The results show that by analyzing and visualizing the information of pyramid selling crime in a certain time and space,we can provide law enforcement advice for relevant law enforcement departments.At the same time,it provides some help for the distribution and visual display of criminal information in pyramid sel ing in China.