method and a device for improving the rendering efficiency of GIS point data at a browser end

A browser and point data technology, applied in the field of GIS point data rendering, can solve the problems of not supporting other point data formats, low efficiency of GIS point data, difficulty in migration, etc., and achieve the effect of real-time rendering
CN109388680AActive Publication Date: 2019-02-26BEIJING SUPERMAP SOFTWARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING SUPERMAP SOFTWARE CO LTD
Publication Date
2019-02-26

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Abstract

The invention provides a method and a device for improving the rendering efficiency of GIS point data at a browser end, which is characterized in that: the GIS point data is stored, and the GIS pointdata comprises an identification ID and a spatial geographic coordinate; Encapsulating the GIS point data and the corresponding graphic file into a browser end canvas object; A batch render is carriedout on that canvas object at the browser end. The present application supports GIS point data stored in common databases such as SQL Server, Oracle, Damon, Kanakura, GeoPackage, UDB, Excel, CSV, etc., and realizes real-time rendering of a large amount of GIS point data at the browser side.
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Description

technical field

[0001] The present application relates to the technical field of GIS point data rendering, in particular, to a method and device for improving the efficiency of browser-side GIS point data rendering. Background technique

[0002] Geographic Information System (GIS) is a computer system that collects, stores, manages, processes, analyzes, displays and applies geographic data.

[0003] The browser-side canvas object is an Html5 element that draws graphics through a scripting computer language. It is usually called a canvas object and is used to render graphics on the browser side.

[0004] Point data is a set of discrete spatial points with geographic coordinate information consisting of one or more pairs of (X, Y) coordinates.

[0005] The existing browser-side GIS point data rendering adopts the technical solution of OpenLayers: (1) enter the GIS point data with coordinate information according to the data organization method; (2) obtain the coordinate infor...

Claims

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