A Method of Urban Hierarchical Region Division Based on Vector Map Data Model

A technology of vector map data and area division method, which is applied in the field of geographic information systems, and can solve problems such as difficult modification and operation, high computational time complexity, and increased computational complexity.
CN105222793BInactive Publication Date: 2019-01-04HUAZHONG UNIV OF SCI & TECH
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2019-01-04
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an urban hierarchical regional division method based on a vector map data model. The method comprises the steps that a corresponding road network diagram structure and polygon boundary data are established for a region needing to be divided; a corresponding diagram structure and boundary polygon are established according to the road network diagram structure and the polygon boundary data, a path is searched to divide an original polygon into two parts, and paths are continuously searched in the newly generated polygons to conduct diagram division till all the polygons cannot be divided; a city is divided into primary regions according to primary road data, all the primary regions are traversed, secondary road data under the primary regions are extracted, and secondary regions under the regions are divided out by applying a regional division algorithm, so that a hierarchical structure of urban regions is formed. According to the urban hierarchical regional division method based on the vector map data model, a diagram structure is used for storing vector map data, operations are all based on the vector data, original data of a map can be completely reserved, and the data can be processed in an undistorted mode.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of geographic information systems, and more specifically relates to a method for dividing urban hierarchical regions based on a vector map data model. Background technique

[0002] With the rapid development of Geographic Information System (GIS) and Location Based Services (LBS), regional analysis is becoming more and more important in many geospatial related applications, such as tourism planning, urban planning , traffic analysis and so on. When we analyze the characteristics of these areas in the city, the first thing to do is to divide the whole city into many small areas. In order to make map segmentation easier, the most commonly used method is a grid-based method. This method is to add a fixed grid to the road network. However, this method simply provides a solution and does not involve map information. This method loses the original road structure of the city and the geographic information of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More