Public facility layout inspection method based on population distribution and road network

The invention discloses a public facility layout inspection method based on population distribution and a road network, and the method comprises the steps: firstly carrying out the classification and screening of points of interest (POI), extracting the long-time dense staying points of people, such as residential areas, and carrying out the estimation of the number of population in an area of interest through employing population density data and cellphone signaling data, obtaining accurate population distribution raster data, and calculating the shortest path between the entrance and the public facility by using a path planning algorithm; dividing the population distribution raster data in the region by using a Thiessen polygon, and endowing the divided corresponding population number value as an attribute to each entrance and exit; and finally, in order to measure the coordination relationship between urban public service facility supply and population spatial distribution in the same period, performing ra