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Mass POI (Point Of Interest) map data display method based on Web browser

A web browser and map data technology, applied in geographic information database, digital data processing, structured data retrieval, etc., can solve the problem of low display efficiency of massive POI map data, reduce the pressure of layer rendering processing, reduce The effect of network transmission pressure and improving query efficiency

Inactive Publication Date: 2015-12-16
XIAN FUTURE INT INFORMATION CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for displaying massive POI map data based on a Web browser, which solves the problem of inefficient display of existing massive POI map data on a Web browser

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  • Mass POI (Point Of Interest) map data display method based on Web browser
  • Mass POI (Point Of Interest) map data display method based on Web browser

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The technical scheme of the present invention is a method for displaying massive POI map data based on a Web browser, specifically implemented according to the following steps:

[0020] Step 1. According to the real-time situation of POI data, establish a multi-level spatial index; when establishing a spatial index, you need to specify the index grid size.

[0021] refer to figure 1 As shown in the figure, the spatial index established by the 10,000-meter grid in Xi'an is shown in the figure. According to the actual situation, spatial indexes of different scales can be set. For example, for the POI data of a certain urban area, three-level indexes can be set, and the grid sizes are 5000 meters, 2000 meters, 1000 meters, etc.

[0022] Step 2. According to the range requested by the user, query and obtain the data set to be displayed t...

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Abstract

The invention discloses a mass POI (Point Of Interest) map data display method based on a Web browser. The POI map data display method is specifically implemented according to the following steps: according to the practical situation of POI data, establishing a multistage spatial index; according to a user request range, carrying out query through the established multistage spatial index and obtaining a data set which needs to be displayed; rendering the obtained data set on the background, and dynamically cutting a graph; and loading the processed dynamic cut graph into a Web browser to finish displaying the mass POI map data. Spatial query retrieval which aims at mass data reduces a traversal range and improves query efficiency. Meanwhile, the characteristic of high performance of a server can be fully utilized to carry out layer rendering and graph cutting on a service side, a Web browser side loads the cut graph, the layer rendering processing pressure of the Web browser side is lightened, a cut graph data volume transmitted in one time is greatly reduced than vector data, and network transmission pressure is reduced so as to improve display efficiency.

Description

technical field [0001] The invention belongs to the technical field of computer information visualization, and relates to a method for displaying massive POI map data based on a Web browser. Background technique [0002] With the rapid development of Internet technology, the application of Internet-based online electronic map is becoming more and more extensive, and the amount of information it contains is also increasing. [0003] Since the online electronic map is based on a web browser, which is different from the traditional C / S architecture, it is a thin client application, and the network is also a wide area network. It is affected by the client's processing capacity and bandwidth transmission capacity. How to ensure the efficient transmission of map data, Processing and display has become an urgent problem to be solved in the online electronic map. [0004] At present, for such applications, the general processing method is to use slices, that is, to solve the proble...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29G06F16/9537
Inventor 房韬刘守仓
Owner XIAN FUTURE INT INFORMATION CO LTD
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