Is there any way we can filter by geoJSON type?

[benedictpmateo]

I was wondering if there's a feature or planning to add where we can filter by specific geoJSON type like only show Polygons and MultiPolygons on search

[mtmail]

What is your use-case? Can you give an example? (address or coordinates) Usually when people want only boundaries they set the zoom parameter to make sure addresses (houses, house numbers) are not returned. OpenStreetMap doesn't yet have all boundaries in the world, especially suburbs or hamlet only exist as node (point) in OpenStreetMap data.

[benedictpmateo]

@mtmail I’m building a map application where users can draw polygons in the map. and I use Nominatim to get real-world place boundaries and add them to the list of polygons the user created - but what i did is i'm just filtering the search result from client side to only show polygons

the actual feature is to use these polygons for density visualization and user can freely modify polygons by drawing/searching from this API

[mtmail]

There's no server-side feature. Easiest option is using the zoom parameter.

If you run your own installation you can change the API output https://nominatim.org/release-docs/latest/customize/Result-Formatting/

Overpass API can also return nearby relations, for example https://overpass-turbo.eu/s/2hnT The API can't output geojson directly, you'd receive *.osm format and then would need to convert it, for example with https://www.npmjs.com/package/osmtogeojson

[benedictpmateo]

@mtmail i have my own installation i'll probably try to change the output. this helps a lot, thank you!