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Method for rendering massive vector data

A vector data and data technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as affecting rendering efficiency, complex scheduling process, and large rendering data

Active Publication Date: 2014-06-11
北京天下图数据技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: 1. There is no standard for the vector data thinning method in the pyramid structure; 2. The generated rendering data may be large, which is not conducive to network transmission; 3. The scheduling process is relatively complicated, which will seriously affect the rendering efficiency

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  • Method for rendering massive vector data
  • Method for rendering massive vector data
  • Method for rendering massive vector data

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] A method for rendering massive vector data, comprising the steps of: cutting the vector data according to the form of a first data structure according to the density of the vector data, and simultaneously generating data in the form of the first data structure for storing range information of the vector data , save the generated data as an index file; organize the data structure of the vector data obtained by cutting according to the form of the second data structure, and generate tile data; generate a property file for recording rendering styles; se...

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Abstract

The invention discloses a method for rendering massive vector data, which comprises the following steps of: according to the intensity of the vector data, cutting the vector data according to a form of a first data structure, simultaneously generating data in the form of the first data structure, which is used for storing range information of the vector data, and storing the generated data into an index file; organizing a data structure for the vector data obtained by cutting according to a form of a second data structure and generating tile data; generating a property file for recording a rendering style; searching the tile data in a range of a region to be rendered from the index file and generating scheduling information; and according to the scheduling information and the property file, carrying out uploading on the tile data to be uploaded, rendering and unloading the tile data to be unloaded. When the method disclosed by the invention is adopted to render the massive vector data, the effect of accurately, rapidly, conveniently and efficiently displaying a map under the excellent visual effect can be achieved.

Description

technical field [0001] The invention relates to a method for rendering massive vector data. Background technique [0002] Vector data rendering refers to the three-dimensional space display of vector data, so that vector data can retain its characteristics in three-dimensional space, that is, spatial information and attribute information, and is suitable for large-scale roaming, zooming and maintaining the authenticity of data. [0003] Currently, there are several methods for vector data rendering: [0004] 1. Overall vector data rendering [0005] This method is to read in the vector data as a whole without preprocessing, so that although the real rendering result can be obtained, when the vector data is large, it will cause serious efficiency problems. And it is not suitable for network transmission, and it is difficult to develop a rendering system attached to the network. [0006] 2. Vector data raster rendering [0007] This method refers to preprocessing the vecto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 关鸿亮秦春单文蔡志煌刘巍
Owner 北京天下图数据技术有限公司
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