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A method of solving map tile storage using packaging technology

A technology of map tiles and tiles, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of improving storage usage efficiency, improving query efficiency, and ensuring accuracy

Active Publication Date: 2017-11-17
康威通信技术股份有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method not only effectively solves the time-consuming problem of storing, transferring, copying and publishing map tiles, but also better implements data protection

Method used

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  • A method of solving map tile storage using packaging technology
  • A method of solving map tile storage using packaging technology
  • A method of solving map tile storage using packaging technology

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Such as figure 1 As shown, first sort the map tile files according to certain naming rules, and then package the tile files. After the packaging is completed, generate configuration data and save them in the package file. Finally, after the package file is successfully generated, use the package file.

[0040] Organize the tile files, and organize the tile files according to the naming rules of first row and second column, for example, the first row, the first column, named y1x1. Row m, column n, named ymxn. This naming method is simple and easy to understand, does not have duplicate names, and is easy to post-process and use. y represents a row, x represents a column, and the mth row and nth column are expressed as ymxn.

[0041] Such as Figure 4 , 5 As shown, the packaging process is divided into two packaging methods according to the numb...

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Abstract

The invention discloses a method for realizing map tile storage by a package technology. The method comprises the following steps that tile files in all layers are sorted and are subjected to unified naming; the organization structure of package files is determined according to the number of the tile files in each layer; a configuration resource is added to a package file root directory and is used for storing the tile size, naming rules, picture types and the organization structure, and each layer corresponds to one package file; according to specific tasks, the package files are used for transferring, FTP (File Transfer Protocol) down loading, FTP uploading or issuing. The method provided by the invention has the advantages that the package files with indexes is utilized, the query efficiency is improved, and the time complexity of an algorithm is reduced to the maximum degree; a node searching number is effectively reduced, the real-time performance of the algorithm is effectively improved, and in addition, the finding accuracy is ensured; meanwhile, the query efficiency is also effectively improved, and the query time is effectively saved.

Description

technical field [0001] The invention relates to a method for solving map tile storage by using packing technology. Background technique [0002] The tile map model is a multi-resolution hierarchical model. From the 0th layer of the model to the top layer, the resolution is getting lower and lower, but the geographical range represented remains the same. First, take the map picture with the lowest zoom level and the largest map scale as the bottom layer of the model, that is, layer 0, and divide it into blocks, starting from the upper left corner of the map picture, cutting from left to right, and from top to bottom. Square map tiles of the same size (such as 256x256 pixels) form the tile matrix of layer 0; on the basis of the map image of layer 0, generate the map image of layer 1 by synthesizing each 2x2 pixel into one pixel, and Divide it into square map tiles of the same size as the next layer to form the tile matrix of the first layer; use the same method to generate th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/835
Inventor 杨震威于少飞
Owner 康威通信技术股份有限公司
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