osm-is-area
Tell if an OpenStreetMap element is an area or not.
First, decide if your element is a way or a relation, then pick the function that is best for you.
Usage
According to Overpass turbo, a way is considered an area if
- It forms a closed loop
- It is not tagged
area=no
- It conforms to one of the conditions for polygon tags.
use osm_is_area;
let tags = vec![
(r"waterway", r"riverbank")
];
let refs = vec![1, 3, 2, 1];
let is_area = osm_is_area::way(&tags, &refs);
assert_eq!(true, is_area);
A relation is an area when it has a tag "type" with value "multipolygon".
use osm_is_area;
let tags = vec![
(r"type", r"multipolygon")
];
let members = vec![1, 3, 2, 1];
let is_area = osm_is_area::relation(&tags, &members);
assert_eq!(true, is_area);
License
MIT