dongle19863 2015-03-24 11:39
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使用坐标系计算行驶距离

I have set up a GPS tracker on a car that logs it's coordinates to a database every X minutes.

I need to know the distance this car is driving.

What is the best way to calculate this? I see google have a Distance Matrix API (https://developers.google.com/maps/documentation/distancematrix/?csw=1) but it looks like that won't handle multiple coordinates, only the start and end.

Edit: I have done some testing, and obviously since it's calculated using a straight line, the result will vary greatly depending on how often the GPS reports the position. Unfortunately, it's both data transfer/battery intensive to have it report every few seconds.

I guess there's no services that will take my coordinates, and figure out what roads the car most likely drove on? And calculate the distance of the road?

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