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id caadria2014_139
authors Tong, Ziyu
year 2014
title Comparison of Partitioning Methods for Estimating the Layout of Green Spaces
source Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 873–882
summary The urban green space positively affects the quality of the environment and urban life. To estimate the layout of urban green spaces, especially to describe the real difference of regional properties, the influenced zone of each green space should be identified firstly. The influenced zone can be used to quantitatively analyse the difference of regional environmental quality. The identification of the influenced zones of green spaces actually is a problem of space partitioning. The study compared three methods mostly used in space partitioning. The regular grid is a most common partitioning method. It is easy to use, but cannot link the grid with green space separately. Voronoi algorithm is a constructive method which partitions the urban space based on each green. Another approach is the application of gravity models, which assumed analogies between human behaviour and Newtonian gravity laws. The gravity model could calculate the probabilities of residents to choose the green space and partition the urban space. In the comparison of these three methods, we conclude that the gravity model can take more characteristics of the green space as the calculating parameters. The gravity model is a better method to estimate the layout of urban green spaces.
keywords Space partitioning; gravity model; Voronoi algorithm; regular grids; green space
series CAADRIA
email tongziyu@gmail.com
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