[Imports] Yet another global building footprints import attempt

[Cascafico Giovanni]

Il giorno ven 22 lug 2022 alle ore 11:37 Marc_marc <marc_marc at mailo.com> ha
scritto:

> how do you plan to review the 777M buildings to filter out those
> that already exist?

I guess I need to adjust wiki adding some general clarification. This
attempt is not intended to import all at once, but aims to find a method
that whoever can follow (and adjust) to import much smaller manageable
pieces of dataset. I just update "About" paragraph.

> you said "Accomplished by QGIS (Grass function v.select disjoint)."
> can you explain a little more ?

QGIS:

- choose an area of interest,
- load the involved source file from country table here [1]
- crop by bbox or polygon (I prefer admin_level=8 boundaries or even
residential landuses)

once the manageable cropped layer has been created,
- use QuickOSM (or an alternative QGIS plugin, or an independent
overpass-turbo query) to load openstreetmap buildings (and demolished or
whatever building lifecycle you want).

now on the two layers
- apply the disjoint function (use find function in processing tools) which
yields all the buildings that do not touch OSM buildings

> could you make available the "filtered source" result you wish to import?
See ItalyBuildingImport repository [2] linked in wiki "Files" paragraph.

[1] https://github.com/microsoft/GlobalMLBuildingFootprints
[2] https://github.com/cascafico/ItalyBuildingImport
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