I wish to split a complex area with many nodes into two areas. How to do this with iD (in-browser editor)? asked 10 Jan, 16:53 fbax |
Hi, This question has been partially answered here:- https://help.openstreetmap.org/questions/55984/splitting-a-multipolygon-into-two-in-id It's fairly easy to do with the JOSM editor. If you need any help please ask and indicate the area involved. Regards Bernard answered 11 Jan, 07:10 BCNorwich Hi Bernard, I followed these steps:
I repeated these steps at another point of the area; this resulted in two distinct ways on the map. I then used "continue" to connect the endpoints of line into what appears to be area; I did this for each line. I then repeated the above processes again so that original area is now three areas; but I see on left panel then iD calls this a "multi-polygon" with four members! I'm not sure where the fourth member came from; but I need to split these members into separate items so they can have different names. The current map has one very large park that is actually three different parks. How do I now convert multi-polygon into distinct areas?
(11 Jan, 15:38)
fbax
Hi, can you provide a link to where this is or the number of one of the polygons or the multipolygon relation number please? I can then have a look to see if I can figure out what's going on.
(11 Jan, 17:01)
BCNorwich
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Apparently there is no easy way to do this. I made changes like this:
A tedious process; but it has been completed! Sorry BCNorwich, I did not see your request until I started typing this. Area 154401143 used to include areas 1240307302 and 1240311695. The original area was called "North Branch Park" which is wrong; the current area without name is private land with "no trespassing" signs beside the new paved cycleway. answered 16 Jan, 22:14 fbax Hi, No problem, you did well to sort it out yourself. I notice that you went to great lengths to keep the areas separated by about a 2m gap. I doubt if this is ground truth though. There's not usually an unowned, unspecified section of land between two properties. If there's a fence or hedge, that would usually adjoin both properties. Therefore it's OSM practice to join the two areas at common nodes. Well Done!
(17 Jan, 10:43)
BCNorwich
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