Electronic map service platform and electronic map data linkage displaying method

Abstract

The invention discloses an electronic map service platform and an electronic map data linkage displaying method. The electronic map data linkage displaying method includes the steps of after a two-dimensional electronic map display command is received, according to the longitude and latitude scopes of a to-be-displayed two-dimensional electronic map related to the two-dimensional electronic map display command, loading two-dimensional foundation map data within the longitude and latitude scopes of a two-dimensional foundation map database, loading service data of a landmark object within the longitude and latitude scopes in a service database, and conducting two-dimensional electronic map display; after a three-dimensional electronic map display command is received, determining the longitude and latitude scopes of a to-be-displayed three-dimensional electronic map according to a measuring scale and the longitude and the latitude of a center point of the two-dimensional electronic map displayed in advance; loading three-dimensional foundation map data within the longitude and latitude scopes determined in the three-dimensional foundation map database, loading service data and height information of a landmark object within the longitude and latitude scopes determined in the service database, and conducting three-dimensional electronic map display. Thus, service data maintenance can be conveniently carried out by a service unit.

Description

technical field [0001] The invention relates to geographical information technology, in particular to an electronic map service platform and a method for linked presentation of electronic map data. Background technique [0002] Electronic map is a visual map displayed on an electronic screen through certain hardware or software based on computer technology and map database. The scale of the electronic map can be enlarged, reduced or rotated without affecting the display effect. Moreover, electronic maps are the main way of expressing geographic data in GIS (Geographic Information System). With the rapid development of geographic information technology, electronic maps have been widely used in government planning, economic and trade, travel guides, satellite navigation, and combat operations. field of command. [0003] Generally, electronic maps can be divided into two-dimensional electronic maps and three-dimensional electronic maps according to different expression forms....

AI Technical Summary

Problems solved by technology

[0005] When the business unit maintains the business data, it not only needs to maintain the business data in the two-dimensional business database, but also needs to maintain the corresponding business data in the three-dimensional business database, resulting in duplication of work and low work efficiency; and , in the process of maintaining the same business data on different platforms, errors are prone to occur, which is not convenient for business units to maintain business data

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