Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for quickly exporting regional sub-data set from Hbase tile storage

A sub-data and tile technology, applied in the computer field, can solve problems such as poor flexibility, low efficiency, and inability to export custom regions, and achieve the effect of improving export efficiency and speed

Pending Publication Date: 2021-10-12
GEOVIS CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, how to write the massive tile data in HBase into SQLite is a big problem. The usual method is to generate MBTiles files through GeoWebCache, but it takes about 5 years to export the global map in this way. , the efficiency is obviously too low, and the export of the custom area cannot be customized, and the flexibility is also very poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for quickly exporting regional sub-data set from Hbase tile storage
  • Method and device for quickly exporting regional sub-data set from Hbase tile storage
  • Method and device for quickly exporting regional sub-data set from Hbase tile storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0045] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0046] The terms used in the scheme of the present invention are explained as follows:

[0047] Tile: Refers to a square grid image that cuts a map within a certain range into several rows and colum...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method and a device for quickly exporting a regional sub-data set from HBase tile storage. The method comprises the following steps: acquiring a rectangular region of tile data needing to be exported according to latitude and longitude coordinates of two coordinate points; determining a scan boundary according to the rectangular region; reading tile data in each Region of the HBase in parallel according to the scan boundary, and storing the tile data in a global variable HashMap; and storing tile data in the global variable HashMap in an SQLite database in a read-write separation mode. According to the method, the tile data exporting efficiency is greatly improved while the function of exporting the tile data area in a user-defined mode is achieved.

Description

technical field [0001] The invention relates to computer technology acquisition, in particular to a method and device for quickly deriving a region sub-data set from HBase tile storage. Background technique [0002] The stand-alone version of Digital Earth products requires map data that can be accessed by a stand-alone computer, and the current tile data in HBase cannot meet the requirements. SQLite provides a specification that can store millions of tile data in a file, so one of the current mature stand-alone solutions is to store tile data in the SQLite database in the form of mbtiles, through GeoWebCache For access, you need to migrate the tile data stored in HBase to SQLite. [0003] However, how to write the massive tile data in HBase into SQLite is a big problem. The usual method is to generate MBTiles files through GeoWebCache, but it takes about 5 years to export the global map in this way. , the efficiency is obviously too low, and the region export cannot be cu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/21G06F16/2453G06F16/29
CPCG06F16/29G06F16/214G06F16/24532
Inventor 张家旺王晓东赵文波张敬亮毕俊杨光辉马银龙傅伟康
Owner GEOVIS CO LTD