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Map display method and device

A display method and map technology, applied in geographic information databases, special data processing applications, instruments, etc., can solve problems such as increasing the interaction pressure between browsers and servers, freezing, and affecting map display

Inactive Publication Date: 2018-02-23
绿湾网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the browser needs to interact with the server in real time, which not only increases the interaction pressure between the browser and the server, but also often has a certain delay, which affects the display of the map and causes a freeze phenomenon

Method used

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  • Map display method and device

Examples

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Embodiment Construction

[0084] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0085] The map display method and device thereof according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0086] figure 1 It is a schematic flowchart of a method for displaying a map provided by an embodiment of the present invention.

[0087] Such as figure 1 As shown, the map display method includes the following steps:

[0088] Step 101. Obtain the three-dimensional coordinates of the original node from the server, and convert the three-dimensional coordina...

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Abstract

The invention provides a map display method and device. The method includes the steps that the three-dimensional coordinates of an ancestor node are acquired from a server, and the three-dimensional coordinates are transformed to obtain the two-dimensional coordinates of the ancestor node; aggregation nodes of all hierarchies of a map are formed according to the two-dimensional coordinates of theancestor node, and a cluster tree is formed by using all the aggregation nodes and the ancestor node, wherein the cluster tree carries the hierarchical relationship and mapping relationship between the nodes; the current hierarchy, needing to be displayed, of the map is determined, and target nodes needing to be rendered and corresponding to the current hierarchy are determined from the cluster tree, wherein the target nodes include the current hierarchy and aggregation nodes of all hierarchies under the current hierarchy and / or the ancestor node; the hierarchical relationship and mapping relationship between the target nodes are extracted from the cluster tree according to a display range corresponding to the current hierarchy, and the target nodes are rendered and displayed on a displayscreen. Calculation is conducted nearby a browser and is faster and more flexible.

Description

technical field [0001] The invention relates to the field of electronic maps, in particular to a map display method and device thereof. Background technique [0002] At present, the electronic map brings many conveniences to people's life. For example, if the user wants to search for the location of a certain store, the user can input the name of the store in the browser, and after clicking Search, the browser will display the location of the store on the map. . When a browser displays a map, it usually sends a request to the server, and the server calculates the map-level data to be displayed in real time according to the request, and then sends the data to the browser, and the browser displays it based on the obtained data. [0003] In the prior art, the browser needs to interact with the server in real time, which not only increases the interaction pressure between the browser and the server, but also often has a certain delay, which affects the display of the map and ca...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29G06F16/9027
Inventor 崔鹏秦锋剑
Owner 绿湾网络科技有限公司
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