I found the neighbourhoods of a city in arcgis and exported them as a .geojson file. I then imported them as a layer into the OpenStreetMap ID Editor so they are now displayed with fuscia lines in my editor. Is there a way to convert each of these into OpenStreetMap areas that I can add the place=neighbourhood tags? This would be preferable to manually tracing the outline of each neighbourhood.
Yes, but you have to follow the Import Guidelines if you want to do this.
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iD doesn’t have a way to take the geojson and just copy it into OSM, I suspect intentionally. You would need to use an editor like JOSM which is intended for those more sophisticated edits. But just importing data from other sources can be very tricky and needs community buy-in, which is why there’s a whole import process. If you’re reviewing each item one by one and making sure everything about it makes sense, and that your data source has a compatible copyright/license, really the same as if you’d just traced it in iD but trying to make it a little easier on yourself, then it may be fine to just go ahead and make the change, but some discussion of the specifics may be helpful first.
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Hey Peter, I would like to map out the neighbourhoods one at a time, manually confirming that it looks good before committing it. Can you provide any guidance on how I could use JOSM to turn the layer for each neighbourhood into openstreetmap areas? This is preferable for me over manually tracing them in ID, not only for ease of mapping, but for accuracy.
In any case, I would be following the Import Guidelines.
I’m far from being a JOSM expert, but the general idea is that it lets you have multiple “layers”, so you’d have a “normal” OSM layer that you had downloaded of the area you’re updating and that you’ll upload your changes from, and then you can also have your GeoJSON file open as its own layer. You can copy an element from that GeoJSON layer to the OSM layer via “Merge Selection” on the Edit menu, and change the attributes from whatever values the GeoJSON has to the OSM tagging that the item should use.
General JOSM getting started guides I know of include: