Target track query method and device

Abstract

The invention relates to the field of communication, and discloses a target track query method and device which is used for simplifying user operation and improving system performance. The method comprises the following steps of acquiring N track points backtracking to a current moment with regard to a target for displaying by a background server according to a received target query instruction; further displaying an operation interface for representing a query range; further detecting a dragging track of a user with regard to the operation interface; determining the query range appointed by the user according to a mapping relation between a predetermined dragging track and the query range; and acquiring a corresponding track point for display according to the query range. Therefore, in a geographic information system, the user query operation can be simplified, the target track is simply and accurately displayed, moreover, the track trend can be dynamically analyzed, the movement condition of the target at a certain moment and in a certain space is analyzed, the status of the target is further judged, and the system performance is improved.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method and device for querying a target track. Background technique [0002] Computer Geographic Information System (Geographic Information System, GIS) is a computer-based tool for analyzing and processing spatial information. GIS technology integrates the unique visual effects and geographic analysis functions of maps with general database operations. . The storage, management and analysis of spatial information by GIS makes it of practical value in explaining time, predicting results, planning strategies, etc. in a wide range of public and individual enterprises and institutions. [0003] In GIS, for the query of the target track, the commonly used method in the prior art is: first select the target on the electronic map, then draw the track points of the target movement according to the position of the selected target, and connect each track point with a line to form the targe...

AI Technical Summary

Problems solved by technology

[0004] Under the prior art query method to the target track, the user will input multiple query conditions, resulting in cumbersome operations; and, according to the current input conditions, the result of the query is not clear, for example: the user expects to query the target (such as a vehicle) for the last 50 track points, but according to the current input conditions, the query result may be thousands of track points, so the redundant track obtained by the query will interfere with the track that the user should pay attention to, and the display is messy, making it difficult to get a short and clear one. trajectory, so that the direction of approach of the target cannot be displayed

The result of the above fuzzy query will cause the user to change the query condition again, which will reduce the query efficiency

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