{"action":"opened","issue":{"url":"https://api.github.com/repos/geojson/geojson-spec/issues/4","labels_url":"https://api.github.com/repos/geojson/geojson-spec/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/geojson/geojson-spec/issues/4/comments","events_url":"https://api.github.com/repos/geojson/geojson-spec/issues/4/events","html_url":"https://github.com/geojson/geojson-spec/issues/4","id":58340830,"number":4,"title":"Support for accuracy","user":{"login":"LinusU","id":189580,"avatar_url":"https://avatars.githubusercontent.com/u/189580?v=3","gravatar_id":"","url":"https://api.github.com/users/LinusU","html_url":"https://github.com/LinusU","followers_url":"https://api.github.com/users/LinusU/followers","following_url":"https://api.github.com/users/LinusU/following{/other_user}","gists_url":"https://api.github.com/users/LinusU/gists{/gist_id}","starred_url":"https://api.github.com/users/LinusU/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LinusU/subscriptions","organizations_url":"https://api.github.com/users/LinusU/orgs","repos_url":"https://api.github.com/users/LinusU/repos","events_url":"https://api.github.com/users/LinusU/events{/privacy}","received_events_url":"https://api.github.com/users/LinusU/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-02-20T11:37:40Z","updated_at":"2015-02-20T11:37:40Z","closed_at":null,"body":"I think that it would be very useful to be able to specify the accuracy at which the coordinates where obtained. E.g.\r\n\r\n```json\r\n{\r\n  \"type\": \"Point\",\r\n  \"coordinates\": [ 18.076479, 59.334537, 14.507372 ],\r\n  \"accuracy\": [ 65, 65, 10 ]\r\n}\r\n```\r\n\r\nWe would need to decide on which unit to specify the accuracy in. In my example I used meters since that is what the HTML5 Geo API returns, but I'm not sure that it's the best way. Maybe [GDOP](http://en.wikipedia.org/wiki/Dilution_of_precision_(GPS)) could be the way to go..."}}