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Method and device for generating space vector data

A vector data and data generation technology, applied in the field of geographic information science, can solve the problem of low efficiency in the merging process and achieve the effect of improving the generation efficiency

Active Publication Date: 2019-08-27
深圳市数字城市工程研究中心
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method and device for generating space vector data, aiming to solve the problem of low efficiency in the current building polygon merging process

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  • Method and device for generating space vector data
  • Method and device for generating space vector data
  • Method and device for generating space vector data

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] The embodiment of the present invention is to generate space vector data of urban functional units, and establish a complete data set of urban functional architecture. The urban functional units are between administrative divisions and buildings.

[0028] Specifically, such as figure 1 As shown, administrative districts, streets, communities, and management grids (some cities) are the administrative division units of a city, which are located at the upper layer of the urban structure system. They are similar to containers that contain various elements of the city from top to bottom. The bu...

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Abstract

The invention is suitable for the field of geographic information science and provides a space vector data generating method and device. The method comprises the step that nodes in an address tree are divided into modes with vector data generated and nodes with vector data not generated, and lists are generated; the list of the nodes with vector data not generated is traversed, and plane vector data of city functional unit nodes is generated by using vector data of building nodes in the nodes with vector data generated; the city functional unit nodes are removed from the list of the nodes with vector data not negated and are added into the list of the nodes with vector data generated; after one time of traversing is finished, a vector graph layer is created, and plane vector data of the city functional unit nodes is stored; the traversing process is repeated until the list of the nodes with vector data not generated is empty. According to the space vector data generating method and device, on the basis of the vector data of the address tree structure and a building space and vector data of administrative division, plane vector data of a city functional unit is established with the vector data of the building space, and the efficiency of the polygonal merging process of buildings is improved.

Description

technical field [0001] The invention belongs to the field of geographic information science, in particular to a method and device for generating space vector data. Background technique [0002] In Geographic Information Science (GIS), spatial vector data is an important data source of GIS and the basis for spatial data processing and analysis. In two-dimensional GIS, area vector data is the most complex expression form of geographic entities, and its automatic generation method has been transformed from the traditional geometric construction method to the topological construction method to ensure the correctness of the topological relationship between the data. [0003] After the area vector data is generated, it is sometimes necessary to merge polygons with similar spatial distances or the same attributes, which is an important operator in the field of cartographic generalization. The completeness and merging results of the current areal vector data merging algorithm are i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/56
Inventor 贺彪席宇亮郭仁忠陈学业李浪姣赵志刚王伟玺
Owner 深圳市数字城市工程研究中心
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