Method for calculating coverage radiation indexes of urban public facilities

Abstract

The invention discloses a method for calculating coverage radiation indexes of urban public facilities. The method comprises the following steps: step S1, acquiring urban basic data and introducing the urban basic data into a file geodatabase; step S2, thinning demographic spatial point data; step S3, establishing a network data set; step S4, creating an OD (origin-destination) cost matrix; step S5, splitting a field and associated attribute; step S6, calculating a service demand amount-resident demand amount ratio of a service point according to a service location; step S7, calculating a service demand amount-resident demand amount ratio of a settlement place according to a settlement location; step S8, summarizing the coverage radiation indexes of the urban public facilities and drawing a coverage radiation index map of the public facilities. By calculating the coverage radiation indexes of the urban public facilities such as schools, hospitals and cultural facilities within a certain radius, the equalization degree of the urban public facilities is reflected, and the service capacity of the urban public facilities within a certain spatial range is reflected.

Description

technical field [0001] The invention relates to a method for planning urban public facilities, in particular to a method for calculating the coverage radiation index of urban public facilities, and belongs to the technical fields of urban planning and geographic information systems. Background technique [0002] Urban public facilities are the supporting carrier of urban social service industry, and they are various public and service facilities that provide public service products for citizens, including education, medical care, culture, sports, transportation, social welfare and security, and administrative management. and community services, postal telecommunications and business financial services and other facilities. Public service facilities play a vital role in meeting people's growing material and cultural needs and improving the quality of life in an all-round way. Therefore, the fair allocation of public service facilities has become an important goal of its plan...

AI Technical Summary

Problems solved by technology

[0004] However, the proportion method cannot reveal the change of accessibility within a larger research unit, and is only suitable for evaluating the distribution differences among regions (such as different provinces, cities, and counties) of public facilities; the nearest distance method ignores other factors such as residents’ perception of facility scale. Moreover, with the improvement of traffic network and travel mode, the consideration of distance factors in the process of residents’ selection of facilities has gradually declined; the Hoover (Huff) model method is relatively abstract and difficult to understand, and at the same time expresses the distance between facilities and demand points The travel friction coefficient of the attenuation relationship is not easy to determine

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