OverPass API - SpeedLimit around a co-ordinates

2019-02-24 23:33发布

We are developing an application, that needs to find the speed around a specific location... We were planning to use OverPass API to first the speed and tried to follow the article mentioned below.

Overpass api to find the speed limit for a co-ordinate?

The syntax of the around method is shown below.

http://www.overpass-api.de/api/xapi?*[maxspeed=*][around=2500,8.5580957,76.880541]

But we are not getting any results... Can anyone guide us if the syntax is correct?

1条回答
聊天终结者
2楼-- · 2019-02-25 00:00

The failure reason: around is not a supported predicate in XAPI (please, see the original manual, https://wiki.openstreetmap.org/wiki/Xapi). So you cannot use it in your queries.

Solution 1: You can replace around with supported bbox. For example, the query below works properly.

http://www.overpass-api.de/api/xapi?*[bbox=-0.489,51.28,-0.436,51.36][maxspeed=*]

You will receive ~300kB of data

Solution 2: If you still want around, please use Overpass QL/XML:

As for me, Overpass XML looks like more readable. Also XML is preferred because XSLT can transform it to any other regular format.

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