Urban block function mixing degree expression method based on POI data

Abstract

The invention discloses an urban block function mixing degree expression method based on POI (Point of Interest) data, which relates to the field of urban block function research, and comprises the following steps: acquiring urban POI data information, determining the nature of the data information, classifying and cleaning the data information, acquiring an actual mixing degree and a calculated mixing degree, and acquiring a weight coefficient through Pearson correlation analysis; obtaining a function mixing index of each block, producing a ternary phase diagram, and generating different function grading statistical maps through the ternary phase diagram. An urban functional space structure is combined with POI big data, and a relatively intuitive means is provided for identifying information such as dominant functions, function mixing degrees and function change trends between streets in one time; meanwhile, the distribution characteristics and rules of the urban super block function mixture generate certain integral cognition, and influence factors in the urban super block function mixture can be further discussed on the basis of the distribution characteristics and rules.

Description

technical field [0001] The invention relates to the field of urban block function research, in particular to a method for expressing the mixed degree of urban block functions based on POI data. Background technique [0002] Functional mixing is an important topic in contemporary urban planning and design research. Functional mixing is generally considered to be an important principle and method for creating a diverse and dynamic urban living environment and promoting sustainable urban development. The core content of theories such as "urban regeneration" in the United Kingdom and "smart growth" in the United States. Under the background of my country's new urbanization, the reasonable mix of block functions is an important starting point for the city to "optimize the structure and improve efficiency" and an important link to achieve intensification and sustainable development. Scholars at home and abroad have carried out multi-level research on the concept, theory and prac...

AI Technical Summary

Problems solved by technology

At present, there is a lack of effective technical methods to recognize the distribution characteristics of the functional mix under the overall spatial structure of the city in China, and although some research data sources are rich in types, there are problems such as interpretability and reproducibility.

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