Map load based method for dynamically screening electronic map point elements

Abstract

The invention provides a map load based method for dynamically screening electronic map point elements. The map load based method for dynamically screening the electronic map point elements comprises 1, performing mesh dividing on point sets of POI (Point of Information) on a map, wherein the size of meshes is identical; 2, dividing the POI in different types to be in different display levels according to the map purpose; 3, confirming pre-reserved points in an electronic map according to the display levels of the POI and the largest area load under the electronic map scale; 4, screening the point set of reserved POI of every mesh and achieving screening of the electronic map point elements. According to the map load based method for dynamically screening the electronic map point elements, the reserved point elements can display the information amount of the point elements in the map maximally, meanwhile mutual covering is avoided, and accordingly cognitive difficulties caused by too much or too little map information amount are avoided.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a method for dynamically screening electronic map point elements based on map load. Background technique [0002] The reading of electronic maps is mainly a process of "seeing", in which vision plays a key role. When the electronic map is filled with too many details, which exceeds the visual resolution and comprehension ability of human beings, the information obtained by people will decrease or even tend to zero. On the contrary, if the amount of information in the map is too small, people cannot obtain effective information from the map. [0003] In electronic map display, electronic map data under different scales have different levels of detail, so when compiling and generating electronic map data, the original map data should be screened. The traditional screening method is generally to divide the display level according to the point feature type, and then statica...

AI Technical Summary

Problems solved by technology

Due to the uneven distribution of point features in different regions, this static screening method often results in insufficient information of point features in some grid areas, and users cannot obtain enough information from the map

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