有什么方法可以找出在道路上是否有一定纬度和经度的点... [英] Is there any way to find out if a point with a certain lat and long is located on any road...

问题描述

你好，

我正在用C#编写一个程序，该程序应查找到城市中各个点之间的最近路径(道路).我需要访问道路数据，例如道路起点和终点的坐标，也许是一个完整的数据库.我不知道如何访问此类信息或文件.因此，为简单起见，我假定了某些顶点和边(顶点之间的连接).现在我有一个点(特定位置的坐标).我想看看此点位于哪条边上.我仅通过获取信息就可以知道顶点的起点和终点以及它们之间的连接(边=道路)，因此无法在道路上定位点的位置.我需要知道是否有任何方法可以找出具有特定坐标的点是否位于特定道路上.

这是我的知识，这些东西非常有限.
非常感谢您的帮助或建议.

非常感谢，

解决方案

Bing Geocode Service [ ^ ]

hello,

I am writing a program in c# which should finds the nearest path(road) between to points in the city. I needed to access the road data,like the coordinates of beginning and end of the roads, maybe a complete data base. I did not know how i can access to such an information or file. so for simplicity i assumed some certain vertices and the edges(the connection between the vertixes). now i have a point(a coordinate of a specific location). I want to see on which edge this point is located. I see by just having information abt start n end of vertices and the connection between them (edges=roads) I can not locate a position of a point on the roads. I need to know if there is any way to find out if a point with a specific coordinates is located on a specific road.

the thing is my knowledge abt these things is very limited.
I really appreciate any help or suggestion.

many thanks,

解决方案

Bing Geocode Service[^]

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