Urban map data upgrading method, terminal equipment and storage medium

Abstract

The invention relates to an urban map data upgrading method, terminal equipment and a storage medium, and the method comprises the following steps: S1, building an urban road network data file, takinga city as a unit, of each city; s2, establishing a city boundary data index file, wherein the city boundary data index file comprises external rectangular coordinates and boundary coordinates of eachcity; s3: according to the circumscribed rectangle coordinates of each city in the city boundary data index file, searching for a corresponding circumscribed rectangle, and further searching for a city where the city is located according to the boundary coordinates of the city corresponding to the searched circumscribed rectangle; s4, judging whether the urban road network data of the city is updated or not, and updating the urban road network data of the city if the urban road network data of the city is updated; and S5, acquiring road network data of the grid corresponding to the current position according to the urban road network data file of the city. According to the invention, the energy loss of invalid data in map data upgrading can be reduced.

Description

technical field [0001] The invention relates to the technical field of map navigation, in particular to a method for upgrading city map data, a terminal device and a storage medium. Background technique [0002] The traditional terminal navigation map data with grid as the basic unit usually packs and integrates the road network and related attribute data of cities across the country into a large file package, which is convenient for grid-based retrieval of related road network data. One of the defects of this large file package is that it is difficult to upgrade the map data. To update the data of some areas, it is necessary to update the entire large file package at one time. Using the current popular network upgrade method, the invalid data traffic loss is huge, and Due to the huge amount of file package data, the upgrade error rate is also high due to problems such as network anomalies during the upgrade process. As the cycle of national infrastructure road network cons...

AI Technical Summary

Problems solved by technology

One of the defects of this large file package is that it is difficult to upgrade the map data. To update the data of some areas, it is necessary to update the entire large file package at one time. Using the current popular network upgrade method, the invalid data traffic loss is huge, and Due to the large amount of file package data, the upgrade error rate is also high due to problems such as network anomalies during the upgrade process

As the cycle of national infrastructure road network construction accelerates, the frequency of map data upgrades in some areas is also increasing, which exacerbates the contradiction of map data updates

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