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Line entity storage method, apparatus and system

A storage device and entity technology, applied in the storage field, can solve problems such as low efficiency and poor performance

Active Publication Date: 2018-08-03
国家测绘地理信息局第三地形测量队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the existing line entity storage technology, it is directly stored in the storage space according to the linear coordinate order of the line entity point set. When performing a large number of complex entity call display and topology operations, the efficiency is low and the performance is poor, which needs to be improved urgently.

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  • Line entity storage method, apparatus and system
  • Line entity storage method, apparatus and system
  • Line entity storage method, apparatus and system

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Embodiment Construction

[0052] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] In the first aspect, the embodiment of the present invention provides a method for storing line entities, referring to figure 1 , including the following steps:

[0055] S1: The entity coordinate set is divided into multi-layer point sets according to the rule of scale omission, and the storage space of each layer is equally divided into multiple basic units.

[0056] The specific division of multi-layer point sets according to the scale omission rule is as follows: figure 2 shown, including the following s...

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Abstract

Embodiments of the invention provide a line entity storage method, apparatus and system. The line entity storage method comprises the steps of dividing an entity coordinate set into multiple layers ofpoint sets according to a scale missing rule, and equally dividing each layer of storage space into multiple basic units; and according to a set threshold MAXPN, judging whether the point density ofeach layer is excessively high or not, and if the point density is excessively high, performing adjustment storage. According to the line entity storage method, apparatus and system provided by the invention, line entities are stored according to a sequence of line entity->layer->grid->grid point set, so that data dynamic call and local topology operation can be effectively improved.

Description

technical field [0001] The invention relates to the field of storage, in particular to a storage method, device and storage system for line entities. Background technique [0002] In the existing line entity storage technology, it is directly stored in the storage space according to the linear coordinate order of the line entity point set. When performing a large number of complex entity call display and topology operations, the efficiency is low and the performance is poor, which needs to be improved urgently. Contents of the invention [0003] In view of this, the embodiments of the present invention provide a storage method, device and system for line entities, which store line entities sequentially in the order of line entity->layer->grid->grid point set, and use the line entity The storage method can effectively improve the dynamic call of data and local topology operations. [0004] In a first aspect, an embodiment of the present invention provides a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/185
Inventor 刘达房龙刘晶东
Owner 国家测绘地理信息局第三地形测量队