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An efficient od data visualization method and system

A data and efficient technology, applied in the field of efficient OD data visualization methods and systems, can solve the problems of low OD line drawing efficiency, damage to the original data table, and long time spent at the OD start and end points, so as to improve the drawing rate and narrow the search range. Effect

Active Publication Date: 2022-07-29
重庆市规划设计研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The network analysis function of ArcGIS can only connect the starting point and the ending point through a straight line, and cannot distinguish the connection between two destinations in two directions
[0006] 2. When the network analysis function of ArcGIS draws the OD line, it needs to traverse from the original data table to find the corresponding OD line starting point information and OD line end point information according to the required starting and ending points of the OD line, so that the OD starting and ending point Finding can take a lot of time, making OD line drawing inefficient
[0007] 3. The network analysis function of ArcGIS is to query directly in the original data table. If an unforeseen error occurs during the OD line drawing process, it is easy to cause damage to the original data table and cause the OD line to not be drawn normally.

Method used

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  • An efficient od data visualization method and system
  • An efficient od data visualization method and system
  • An efficient od data visualization method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An efficient OD data visualization system such as figure 1 As shown, it includes a data receiving module, a dictionary generation module, a data preprocessing module, a data search module and an OD line element generation module, in which:

[0056] The data receiving module is used to receive the starting point element information, the ending point element information, the radian parameter information and the original data table; the data receiving module is also used to extract the attribute fields of the starting point element information and the ending point element information respectively, and obtain the starting point element attribute field information and the ending point element information. Property field information. in:

[0057] The start point element information is the spatial start point element of the OD line, the end point element information is the space end point element of the OD line, and the data types of the received start point element informati...

Embodiment 2

[0073] The difference with the first embodiment is: the dictionary generation module is used to copy all the OD line end point information and the trend flow information of the OD line start and end points corresponding to the same OD line start point information in the original data table to obtain No. 1 sub-data. table, and generate a start point-termination point attribute dictionary from all the copied No. 1 sub-data tables according to the corresponding OD line start point information.

[0074] The data search module is used to find the corresponding OD line starting point information and the associated No. 1 sub-data table from the starting point-terminating point attribute dictionary according to the starting point attribute field information, and find the corresponding No. 1 sub-data table according to the end point attribute field information. The end point information of the OD line and the trend flow information of the corresponding start and end points of the OD lin...

Embodiment 3

[0078] The difference with the first embodiment is: the dictionary generation module is used to copy all the OD line starting point information and the trend flow information of the OD line starting and ending points corresponding to the same OD line end point information in the original data table to obtain No. 2 sub-data. table, and generate the end point-start point attribute dictionary according to the corresponding OD line end point information of all the copied No. 2 sub-data tables.

[0079] The data search module is used to find the end point information of the corresponding OD line and the associated No. 2 sub-data table from the end point-start point attribute dictionary according to the end point attribute field information, and find the corresponding No. 2 sub-data table according to the end point attribute field information. The starting point information of the OD line and the trend flow information of the corresponding starting and ending points of the OD line. ...

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Abstract

The invention relates to the technical field of urban planning, and specifically discloses an efficient OD data visualization method and system. Find the OD end point information of the corresponding end point column or the OD start point information of the start point column, and copy, extract, arrange and combine to obtain a sub-data table, and generate an attribute dictionary according to all the obtained sub-data tables; the data preprocessing module is used for the start point element information and end point information The element information is analyzed by data type, and the data type conversion is performed on the starting point element information and the ending point element information whose data type analysis result is polygon data, and the starting point element information and the ending point element information whose data type is point data are obtained; the data search module is used for Look up the corresponding OD line start point information and OD line end point information from the attribute dictionary. By adopting the technical scheme of the present invention, the drawing efficiency of the OD line can be improved.

Description

technical field [0001] The invention relates to the technical field of urban planning, in particular to an efficient OD data visualization method and system. Background technique [0002] OD (Origin-Destination) data is an important data type that reflects the flow of elements and the connection between regions, such as OD data of population travel, OD data of capital flow, etc. It has been widely used in planning research and urban perception. [0003] At present, OD data can be visualized through network platforms such as Canvas, eCharts, and kepler. Using these platforms, users can draw OD diagrams connected by arcs. However, these network platforms require users to have certain JavaScript scripting capabilities. , which puts forward higher requirements for users, which is not convenient for ordinary planners to use. [0004] In the context of land and space planning, GIS is more and more widely used in urban planning. Using the network analysis function of ArcGIS, OD da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/904G06F16/903G06F16/36
CPCG06F16/904G06F16/90335G06F16/374
Inventor 刘清全冷炳荣易峥曹春霞王英李继珍
Owner 重庆市规划设计研究院
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