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Good afternoon.

I am working with OpenStreetMaps and I would like to know what is the tolerance for measuring distances between coordinates with OSM. Is there any article or website where I could find this tolerance specification?

Thanks in advance.

asked 26 Oct '21, 14:37

Migueltm_22's gravatar image

accept rate: 0%

There are numerous published studies going back over 10 years (for instance, comparing OSM road networks with alternative (usually official) sources. For Western Europe it's probably reasonable to assume highways are within 10 m of their true location. It's entirely possible that most may be within 5 m or better. I don't have a feel for other parts of the world: imagery offsets in places like Africa may result in quite large discrepancies.

Less attention has been paid to other data such as buildings. I did look at one set of boundaries using a fairly simple approach.

Broadly OSM prizes topological accuracy above spatial accuracy, and for users of consumer grade GPS 5-10m discrepancies are not usually noticeable.

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answered 27 Oct '21, 09:58

SK53's gravatar image

SK53 ♦
accept rate: 22%

Generally it's whatever the contributor feels like, refined iteratively by subsequent contributors. There is no "specification" as such - you can't specify what volunteers might or might not want to do.

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answered 26 Oct '21, 15:15

Richard's gravatar image

Richard ♦
accept rate: 18%

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question asked: 26 Oct '21, 14:37

question was seen: 1,016 times

last updated: 16 Nov '21, 08:17

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum