A method and system for online display of massive data

Abstract

The invention discloses a method and a system for online display of mass data. The method comprises the following steps that a server creates a base map service and a thematic map service; a client calls the base map service and the thematic map service; the base map service of the server generates a base map picture; the thematic map service generates a thematic map picture; and the client acquires the base map picture and the thematic map picture from the server, and superimposes the thematic map picture onto the base map picture for display. The system comprises the client and the server, wherein the client is connected with the server, and used for calling the base map service and the thematic map service of the server, and superimposing the thematic map picture acquired from the server onto the base map picture for display, and the server is used for creating the base map service and the thematic map service, and generating the base map picture based on the base map service, and the thematic map picture based on the thematic map service. According to the method and the system for the online display of the mass data, a large amount of point, line and surface data can be displayed on a browser on the premise that a running speed is not influenced.

Description

technical field [0001] The invention belongs to the field of geographic information, and in particular relates to a method and system for online display of massive data. Background technique [0002] GIS (Geographic Information System, Geographic Information System) is a comprehensive discipline that combines geography, cartography, remote sensing and computer science. It is a computer system for inputting, storing, querying, analyzing and displaying geographic data. applications in different fields. With the popularity of Internet applications, WEBGIS running in the Internet environment has become a hot spot in the industry. [0003] In traditional GIS, there are often displays involving a large number of points, lines, and surfaces. When the amount of displayed data increases, it will seriously affect the response time of the system and even cause the system to crash. This situation is particularly prominent in WEBGIS accessed through a browser. Take the display of poin...

AI Technical Summary

Problems solved by technology

Take the display of point data as an example. In IE browser, each displayed point data consumes a certain amount of browser resources. When there are too many point data displayed (for example: about 2000), there will be obvious If the system response is not timely, it may even cause the browser to crash

[0004] To solve the above problems, the current common solutions are to limit the amount of data displayed by the browser each time, or to use point aggregation, that is, to aggregate adjacent points in space into one point.

However, the above methods have shortcomings: limiting the amount of data displayed each time will cause the function to fail to meet the expectations of the system

In the above method, when the number of annotations is large, the page load will still be overloaded, resulting in the problem that the browser responds too slowly

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