<div dir="auto">Can we send an email or two to LINZ to see if they have any suggestions?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 23 Sep 2020, 1:01 PM Eliot Blennerhassett, <<a href="mailto:eliot@blennerhassett.gen.nz">eliot@blennerhassett.gen.nz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings,<br>
<br>
well, apparently 3 years is long enough for the suffering endured in the<br>
import of 2M street addresses from LINZ to have faded...<br>
<br>
So I've started looking at what an update might involve.<br>
<br>
Analysing the changeset[1] that can be downloaded from LINZ, there are 3<br>
kinds of change:<br>
<br>
DELETE 12921<br>
INSERT 96589<br>
UPDATE 174978<br>
--------------<br>
TOTAL 284488<br>
<br>
The Insert and Delete changes should be reasonably straightforward.<br>
Often a subdivision has one delete + many inserts<br>
<br>
Breaking down the Updates further:<br>
about 100K seem to have no material changes<br>
15K have same address<br>
1300 move > 100m<br>
14K move > 10m<br>
13K have address change (e.g. spelling correction, change in number<br>
scheme, change in suburb etc<br>
<br>
Sooooo, I'm looking for collaborators on figuring out a process and then<br>
doing the update.<br>
<br>
Two broad options for the data source:<br>
1. Changeset from LINZ<br>
2. Full data dump from LINZ, conflation with existing OSM<br>
How to process the changes, how to organise the updates (tasking<br>
manager?) etc. etc.<br>
<br>
<br>
Your thoughts?<br>
<br>
-- <br>
Eliot<br>
<br>
<br>
[1] <a href="https://data.linz.govt.nz/layer/53353-nz-street-address/history/" rel="noreferrer noreferrer" target="_blank">https://data.linz.govt.nz/layer/53353-nz-street-address/history/</a><br>
original import was rev 66<br>
<br>
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</blockquote></div>