Spatial Distribution Characteristics and Convenience of Urban Catering Industry Based on POI Data:A Case Study of Nanjing,Jiangsu Province
This paper adopted Python language to capture the catering POI in the main urban area of Nanjing from the Amap open platform.And the spatial structure characteristics of the catering industry in the main urban area of Nanjing were explored based on the nearest neighbor table analysis,kernel density estimation method and GIS statistical analysis.With the help of buffer analysis and network analysis,the dining convenience map was drawn,and the per capita dining convenience was analyzed in combination with the population distribution.It is found as follows.① The average interval distance of catering outlets in the main urban area of Nanjing is short,spatial agglomeration presents a large core and multiple small cores,and subdistrict-scale catering density decreases from the center to the periphery.② The average interval distance of snack fast food outlets is the shortest,and that of international catering outlets is the longest.International catering outlets show a single-core agglomeration distribution,outlets of snack fast food,Chinese food and dessert drinks show multi-core distribution.The agglomeration range,the extreme value of kernel density and the distribution density of subdistrict scale from large to small are snack fast food,Chinese food,dessert drinks and international catering.③ The overall convenience of dining in the main urban area of Nanjing is high,among which Chinese food is the most convenient.The matching degree of dining convenience and population distribution is high,the per capita dining convenience is opposite to the overall dining convenience,and the value of per capita dining convenience in the old urban area is low.
万方数据
