Import admin_level=8

[ialokim]

In order to enable navitia.io in our ni coverage to add place values (so e.g. add "Managua" to all stops inside Managua), it needs administrative boundaries with admin_level=8.

Up to now there are none in Nicaragua (see here), but it's pretty the same information provided by settlements.

We should probably give this "little" import a high priority. What do you think @xamanu @AltNico @roirobo @porfiriopaiz ?

[pantierra]

Yes, this is great. As a starting point I would like to mention this input:

• Overview of admin_level (particularly I want to refer to the information about Nicaragua): https://wiki.openstreetmap.org/wiki/Tag:boundary=administrative
• We started an import initiative once, not sure about the status though: https://wiki.openstreetmap.org/wiki/Import/Catalogue/Nicaragua/AdminBoundaries

[ialokim]

I've been looking into the city_polygons_wgs84.shp dataset which should contain the administrative boundaries for admin_level=8 and noticed that the data seems quite outdated as nearly all of the cities already seem to be bigger than the shapefile states. See the two examples for Estelí and Managua:

So I fear at least the information provided by this dataset is not very useful (anymore) for an import into OSM.

@xamanu How did you get this data? Could they have newer versions which they could provide us too?

[ialokim]

They even seem to provide the contours the cities had back in 1988, see for example Estelí as provided by INETER.

So pretty sure this data will not be helpful for inclusion in OSM, but I am wondering if it is a good idea to just manually add city contours following the current extend (and not backed up by any official data source)?

[AltNico]

@ialokim

I am wondering if it is a good idea to just manually add city contours following the current extend (and not backed up by any official data source)?

👍 for this. I think it's better to have at least some data than to have no data.

[roirobo]

So pretty sure this data will not be helpful for inclusion in OSM, but I am wondering if it is a good idea to just manually add city contours following the current extend (and not backed up by any official data source)?

The problem is that neither the current extend is updated. But is the closest we can get so far.