Abstract: Visual analysis technology is playing an increasingly important role in the analysis of traffic data and the discovery of traffic problems and decision making. In order to intuitively show the city transit network spatial distribution density, the vector data of Beijing city bus lines is analyzed based on the direct visualization and visualization method of two kinds of aggregation distribution of transit network spatial analysis. The original data processing is calculated for direct visualization of bus lines in Beijing city main roads based on data distribution method. The canvas drawing thermodynamic diagram is used on the original data visualization. The visualization results according to the analysis of the situation of spatial distribution of bus lines in Beijing city show that this method has practical value and significance of city public transportation network planning and optimization.

Key words: network distribution, visualization analys, transit planning