Efficient OD data visualization method and system

Abstract

The invention relates to the technical field of urban planning, and particularly discloses an efficient OD data visualization method and system, and the method comprises the steps: a dictionary generation module carries out the correlation searching of the OD terminal point information of a corresponding terminal point column or the OD starting point information of a starting point column according to the same OD starting point information in a starting point column of an original data table or the same OD terminal point information in a terminal point column, copying, extracting, permutation and combination are carried out to obtain sub-data tables, and an attribute dictionary is generated according to all the obtained sub-data tables; the data preprocessing module is used for performing data type analysis on the starting point element information and the end point element information respectively, and performing data type conversion on the starting point element information and the end point element information of which the data type is surface data to obtain the starting point element information and the end point element information of which the data type is point data; and the data searching module is used for searching corresponding OD line starting point information and OD line terminal point information from the attribute dictionary. By adopting the technical scheme of the invention, the OD line drawing efficiency 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 inter-regional connections, such as population travel OD data, capital flow OD data, etc., and 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, kepler, etc. Using these platforms, users can draw arc-connected OD diagrams, but these network platforms require users to have certain JavaScript script code writing capabilities , puts forward high requirements for users, and 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 data can be visuali...

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.

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