Buffer analysis is based on point, line, surface entity, automatically create a buffer polygon layer within a certain width range around it, and then establish the overlay of the layer and target layer, and analyze to get the desired result. It is one of the spatial analysis tools used to solve the proximity problem. Proximity describes the degree to which two geographical objects are similar in geographical space
Buffer analysis is one of the important spatial analysis functions of geographic information systems. It has extensive applications in transportation, forestry, resource management, and urban planning, such as the delimitation of protected areas around lakes and rivers, and the selection of automotive service areas. The residential area is far from the establishment of the street network buffer.