| As the urban spatial pattern is associated with all aspects of social life,such as urban economics,traffic,employment and land use,building a scientific and reasonable urban spatial pattern has become the most important content in promoting China’s new urbanization.The study of urban spatial pattern can determine the layout of urban features in macro.It is also one of the most important contents in the research of urban geography and urban planning and can help to make science urban planning decision in the social space.In the current urban spatial pattern study,most scholars are trying to describe and to analyze it from the angle of their respective fields while only few scholars are paying attention to the quantitative study of urban landscape features.And there are still two aspects lacking in the study that extracts the landscape features directly:geometry and attribute.With the aid of spatial clustering and other algorithms,this context investigates urban space landscape features extraction based on the in-depth analysis of urban spatial pattern and spatial pattern of the features.The main research contents and results are as follows:(1)The features characteristics’ analysisIn allusion to a typical pattern of urban space features,from its semantic description,geometry,and many other features are summarized and analyzed.In addition,geometry,attributes,spatial relation factors and other characteristics,are analyzed and summarized from a macro point.Discusses the quantitative measure of features’ mode.(2)The study based on spatial clustering of urban spatial pattern feature extraction methodAccording to the geometry,attributes,spatial relations and other characteristics of urban spatial pattern features,the corresponding features of extraction rules and designing the rule extraction algorithm are created.The spatial pattern of urban features abstracted as point,polyline,polygon and spatial relations.Spatial clustering,spatial syntax and other technical methods were used to achieve urban spatial pattern feature extraction.(3)Nanjing is used as an example of urban spatial pattern feature extraction and comparison experimentsIn 2012,the urban of Nanjing used location map as the experimental data.By using urban spatial pattern extraction method,Nanjing’s spatial pattern of urban features were extracted.And based on the experimental results,the Nanjing urban spatial pattern features mode was generated for verifying the accuracy of the extraction experiment. |
