[Talk-nz] Continuing the Street Address Import

[Kyle Hensel]

Hi all,

I had a look at how many street addresses are missing from OSM, which was rather simple thanks to the `ref:linz:address_id` tag which exists on most address points.

Here are some stats:

- 1.9 million address points in OSM are still ‘perfect’ since the initial import in 2017.
- about 39,000 addresses in OSM almost perfectly match LINZ's data, but are just missing the `ref:linz:address_id` tag (the majority of these are in Te Anau and Napier where they were merged with buildings and the ref was removed)
- about 17,000 addresses have been modified by LINZ, so the OSM data is now out-of-date (e.g. spelling corrected, suburb changed)
- <300 addresses have been duplicated by mappers, so there are now two nodes with the same `ref:linz:address_id` tag
- And finally, 161,000 new addresses are totally missing from OSM.

I'm a regular OSM contributor (username kylenz) and I've been thinking about how this dataset could be updated.

Since the original import in 2017, the RapiD editor has emerged, which is a modified version of the iD editor, designed to speed up importing data in a controlled manner.

I've created a detailed wiki page over at https://wiki.openstreetmap.org/wiki/Import/New_Zealand_Street_Addresses_(2021) which documents a proposal to use a custom version of the RapiD editor to import the new addresses, and to fix incorrect data in addresses. I've also created a quick proof-of-concept which you can try out here: https://linz-addr.kyle.kiwi - NOTE: it deliberately does not let you upload changesets (yet).

I'd love to hear thoughts and feedback on this proposal, not least from those involved in the original import.
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