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ABSTRACT摘要  Urban public space is not only characterised by the connection of visible spaces, but also featured by the visible functions, thereby forming the different spatial atmosphere that humans can interpret.城市公共空间不仅具有可见空间的连通性，而且具有可见功能，从而形成了人类可以解读的不同空间氛围。 In this article, public spaces are conceptualised as a set of viewsheds/isovists that are further used to generate visibility graph (VG) of mutual visibility between spatial locations and functional places.在本文中，公共空间被概念化为一组视图/等值线，并进一步用于生成空间位置和功能位置之间的相互可见性的可见性图（VG）。  By adding land-use locations into the visibility graph, the current Visibility Graph Analysis (VGA) measures in the space syntax model can be extended to form a novel approach to investigate the fine-scaled spatio-functional interactions though public space in the dense built environment.通过在可见性图中加入土地利用位置，可以扩展空间句法模型中的当前可见性图分析（VGA）方法，形成一种研究密集建筑环境下公共空间精细尺度空间功能相互作用的新方法。  In so doing, a framework called ‘Function Visibility Graph Analysis (FVGA) is introduced, in which a series of measures are introduced to reflect various respects of viable landscape.在此基础上，引入了功能可见性图分析（FVGA）框架，在该框架中引入了一系列反映可行景观各个方面的措施。  The public spaces are further grouped to function spaces, for describing the functional identity for urban spaces with reference to the compositions of the visibility for various types of functions.将公共空间进一步划分为功能空间，参照各种功能的可见度构成来描述城市空间的功能特性。 All these measures of the graph are accomplished of comparing location to location within a system, comparing systems with different spatial layouts or land-use patterns.所有这些图形度量都是通过比较系统内的位置来完成的，比较具有不同空间布局或土地利用模式的系统。 It is shown that FVGA can be effective to assess the feasibility of detail urban design and land-use allocations.结果表明，FVGA可以有效地评价城市详细设计和土地利用配置的可行性。

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