Method and system for drawing bus line density distribution map

Abstract

The present invention discloses a method and a system for drawing a density distribution diagram of bus routes. The method comprises the following steps: S1, respectively acquiring longitude coordinates and latitude coordinates of path reference points of each designated bus route; S2, transforming the longitude coordinates and the latitude coordinates of each path reference point into corresponding screen pixel point coordinates according to n algorithm for mapping between a zooming scale, a longitude and a latitude of a map and screen coordinates; S3, respectively acquiring transparency corresponding to each screen pixel point, and acquiring total transparency of the superimposed screen pixel points; and S4, respectively acquiring a corresponding ARGB (Alpha Red Green Blue) color value according to each transparency and each total transparency, so that broken lines of the bus routes are drawn through the corresponding ARGB color values. According to the method and the system, which are disclosed by the invention, the transparency is obtained to obtain the number of the bus routes, the broken lines are drawn by utilizing corresponding colors so as to realize accurate and visual display of a density distribution result of the bus routes on the map through color grading.

Description

Technical field [0001] The invention relates to a method and system for drawing a density distribution map of a bus line. Background technique [0002] The bus route map is a detailed mark of the bus route, including the station name, route, route name and the number of bus routes, so that the rider can quickly identify the easiest and fastest route for the ride. At present, different bus lines are generally displayed by broken lines of different colors. When multiple bus lines pass through the same street, the superimposition of multiple bus lines forms a line segment. The user cannot intuitively understand how many bus lines the line segment represents. It is inconvenient to intuitively understand the number of bus lines passing through this section of the street. Summary of the invention [0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method and system for drawing a bus line density distribution map that can solve the...

AI Technical Summary

Problems solved by technology

At present, different bus lines are generally displayed through broken lines of different colors. When multiple bus lines pass through the same street, the superposition of multiple bus lines forms a line segment. Users cannot intuitively understand how many bus lines this line segment represents, that is, they cannot It is inconvenient to intuitively understand the number of bus lines passing by this section of the street

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