[talk-au] PSMA Administrative Boundaries

[Andrew Harvey]

Not sure why I can't find it on the list archives but there was some
discussion about this below. In short, I'm in favour of not uploading
duplicate state borders and during or post-import we manually fix up
the relations to use the existing state boundaries.

On Thu, 18 Oct 2018 at 12:35, Andrew Davidson <theswavu at gmail.com> wrote:
>
> On Wed, Oct 17, 2018 at 6:29 PM Andrew Harvey <andrew.harvey4 at gmail.com> wrote:
>>
>> I'm in favour of first manually removing the
>> state borders so we don't dump more nodes on top and then post-upload
>> we can just join the new relations to the existing state borders where
>> they meet.
>
>
> I can see your point about not wanting to upload ways and nodes that just going to be deleted immediately after. However if we don't then it's going to make my idea for QA harder. I'd assumed that we'd be uploading valid multi-polygons which means that we could use Overpass and the JOSM validator for QA. I guess we might be able to come up with another approach but I'm not sure it's worth the effort just to avoid adding and removing a few tens of thousands of nodes in comparison to the size of the import.
On Mon, 22 Oct 2018 at 15:04, Joel H. <joelh at disroot.org> wrote:
>
> One last note (and I don't know if this has been mentioned already).
>
> But it seems that the State boundary (at least on the QLD/NSW boarder)
> doesn't match up precisely with what we already have in OSM. Should we
> remove the outer edges of the PSMA data and then add existing state ways?
>
> On 22/10/18 1:40 pm, Andrew Harvey wrote:
> >> I don't know if this was introduced in the simplification or it was an
> > error with PSMA. But there is only 26 of these errors in QLD so I would
> > hardly call this an issue, you can easily fix these manually.
> >
> > I'm not sure either, so unless there's a better/automated way, let's
> > just address this manually either during the import or immediately
> > after.
> > On Sun, 21 Oct 2018 at 12:33, Joel H. <joelh at disroot.org> wrote:
> >> On 19/10/18 5:01 pm, Andrew Harvey wrote:
> >>
> >>> Is there a problem with crossing ways? Why do they need a shared node
> >>> when they are different admin levels?
> >>
> >> Yes jump to the position I told you and zoom right in to the
> >> intersection, there is a crossover between two level 10 admin areas.
> >>
> >> I don't know if this was introduced in the simplification or it was an
> >> error with PSMA. But there is only 26 of these errors in QLD so I would
> >> hardly call this an issue, you can easily fix these manually.
> >>
> >>
> >>
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