[Talk-nz] Street address data update?

[Tim McNamara]

Can we send an email or two to LINZ to see if they have any suggestions?

On Wed, 23 Sep 2020, 1:01 PM Eliot Blennerhassett, <
eliot at blennerhassett.gen.nz> wrote:

> Greetings,
>
> well, apparently 3 years is long enough for the suffering endured in the
> import of 2M street addresses from LINZ to have faded...
>
> So I've started looking at what an update might involve.
>
> Analysing the changeset[1] that can be downloaded from LINZ, there are 3
> kinds of change:
>
> DELETE  12921
> INSERT  96589
> UPDATE  174978
> --------------
> TOTAL  284488
>
> The Insert and Delete changes should be reasonably straightforward.
> Often a subdivision has one delete + many inserts
>
> Breaking down the Updates further:
> about 100K seem to have no material changes
> 15K have same address
> 1300 move > 100m
> 14K move > 10m
> 13K have address change (e.g. spelling correction, change in number
> scheme, change in suburb etc
>
> Sooooo, I'm looking for collaborators on figuring out a process and then
> doing the update.
>
> Two broad options for the data source:
> 1. Changeset from LINZ
> 2. Full data dump from LINZ, conflation with existing OSM
> How to process the changes, how to organise the updates (tasking
> manager?) etc. etc.
>
>
> Your thoughts?
>
> --
> Eliot
>
>
> [1] https://data.linz.govt.nz/layer/53353-nz-street-address/history/
> original import was rev 66
>
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>
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