基于GIS的信息可视化方法及应用研究

Information Visualization Techniques Based on GIS and Their Application in Pesticide Residues Data Set

介绍和分析了基于GIS(地理信息系统)的信息可视化方法,包括比例符号图(Proportional symbol maps)、地区分布图(Choropleth maps)和统计图(Cartograms maps)。给出了比例符号图和地区分布图的实现方法,将其应用于全国农药残留检测结果的可视化中,实现了基于比例符号图的定性结果可视化、基于地区分布图的定量结果可视化以及基于直方图的时间序列数据可视化,将这三种图集成在同一窗口中,配以鼠标悬停提示、鼠标点击过滤等交互技术,实现了上述三种图及所选数据之间的交互和联动。上述可视化结果可帮助专业人员和决策者快速理解和分析全国农药残留的分布情况,为正确决策提供帮助。

Information visualization techniques based on Geographic Information System （GIS） was introduced and analyzed, which contain Proportional symbol maps, Choropleth maps and Cartograms maps. The implementation methods of Proportional symbol maps, Choropleth maps was proposed, and applying them on Pesticide residue detection result, visualizing qualitative results with Proportional symbol maps, quantitative results with Choropleth maps and time series data with histogram. These three maps are integrated in the same window, coordinating interactive technology with mouse hovering tips, mouse clicking filter The methods implement interaction and linkage between the three maps and the selected data. Above-mentioned information visualization techniques can help professionals and decision-makers understand and analyze the distribution of the national pesticide residue results effectively, and provide help for the correct decisions.