{
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  "path": "/user/FajrAl/diary/408493",
  "publishedAt": "2026-04-09T14:52:41.000Z",
  "site": "https://www.openstreetmap.org",
  "tags": [
    "Link"
  ],
  "textContent": "A few days ago, I asked the community about converting general GIS polygons into OSM multipolygon relations. I’ve searched online but haven’t found a workflow that fits my needs. Specifically, I am looking for a way to handle three different levels of administrative boundaries where adjacent areas share a single boundary line connected via a relation.\n\nMy question on the OSM forum is still awaiting a solution: Link\n\nHowever, someone from my local community mentioned that what I’m looking for is “topology.” While that is a broad GIS term, they clarified that TopoJSON is a specific format designed for this. There are many converters available to turn GeoJSON into TopoJSON.\n\nInterestingly, I found that someone opened a ticket for a TopoJSON converter in JOSM back in 2020, but it hasn’t received a response yet: Link",
  "title": "Topology - TopoJSON"
}