Quick revision into the water multipolygon of the delta to realise, quite expectedly, that the multipolygon is open on the southern tip of the delta, on the border, between this way and this way.
You (and your neighbor) should be careful when working in multipolygons, specially when they’re this big and have so many members. If working with JOSM, check the validation scan and fix ALL THE ERRORS you find, as any relations not closed correctly or without the correct functions in their members will not render properly. Usually descriptions on the errors are pretty straight-forward and tell you exactly what you should do to fix such errors.
What a chaotic mapping. Sure you can repair it with the ID-editor (as I did). Your relation 8732 has had a gap (as Martinawa wrote) and your way 2718645 (a wetland island) as “inner” part of a relation a gap too. It looks strange, if wetland is drawn over the lines if the relations water / land - so there is no clear structure. I think, the boundary has destroyed the complicated net of inner and outer. Why always people draw boundaries on other lines and not as extra-lines?
OpenGeofiction
Discussion
Comment from Martinawa on 3 August 2019 at 18:25
Quick revision into the water multipolygon of the delta to realise, quite expectedly, that the multipolygon is open on the southern tip of the delta, on the border, between this way and this way.
You (and your neighbor) should be careful when working in multipolygons, specially when they’re this big and have so many members. If working with JOSM, check the validation scan and fix ALL THE ERRORS you find, as any relations not closed correctly or without the correct functions in their members will not render properly. Usually descriptions on the errors are pretty straight-forward and tell you exactly what you should do to fix such errors.
Comment from MOI N on 3 August 2019 at 21:13
i don’t use josm :( , i use id
Comment from histor on 3 August 2019 at 22:59
What a chaotic mapping. Sure you can repair it with the ID-editor (as I did). Your relation 8732 has had a gap (as Martinawa wrote) and your way 2718645 (a wetland island) as “inner” part of a relation a gap too. It looks strange, if wetland is drawn over the lines if the relations water / land - so there is no clear structure. I think, the boundary has destroyed the complicated net of inner and outer. Why always people draw boundaries on other lines and not as extra-lines?
Comment from histor on 3 August 2019 at 23:54
And two coastlines parallel - one inside and one outside of the delta. I hope I fixed too the flooding of Antarephia.
Comment from MOI N on 4 August 2019 at 00:24
thanks for fixing it 😁
Comment from histor on 4 August 2019 at 08:07
You mean this? [https://opengeofiction.net/relation/87357#map=11/-26.6327/19.2367]
Learn something about relations.
Comment from MOI N on 4 August 2019 at 22:08
the relation was deleted
Comment from histor on 4 August 2019 at 22:17
Sorry - then somebody must help you, who is using JOSM.