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<div class="moz-cite-prefix">On 2018-03-11 00:37, Eugene Alvin
Villar wrote:<br>
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cite="mid:CAPhqi6KKuYzyovxnSoGnrTvCU_DrJnRJQUXvDQxTme91MUjhTg@mail.gmail.com"
type="cite">
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<div class="gmail_quote">On Sun, Mar 11, 2018 at 12:41 AM,
André Pirard <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:A.Pirard.Papou@gmail.com" target="_blank">A.Pirard.Papou@gmail.com</a>></span>
wrote:<br>
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<div class="m_-1570057376261270935moz-cite-prefix">Hi
all,<br>
<br>
Please all, take a very attentive look at this.<br>
Please note the subject change: unnecessary.<br>
Please note the disambiguation boundary vs borderline.<br>
<br>
The problem with admin_level tags is that numbers need
to exist to <b>be </b><b> able</b> to nest
boundaries and hence that only administrative
boundaries are nestable.<br>
That problem does not exist with subarea relation
roles [...]<br>
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<div>Subareas will not work for my country. We generally
have the following hierarchy: region > province >
city/municipality.<br>
<br>
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<div>However, we have two cases where a city inside a
province is part of a different region from the rest of
the cities and municipalities of that province. In this
case, using admin_level=* to properly indicate the
administrative boundaries in type=boundary +
boundary=administrative relations is unavoidable.<br>
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</blockquote>
Not at all.<br>
Using an inner way role, a boundary area can have a hole in it: the
hole that your city makes in the wrong province<br>
and that hole can be a subarea somewhere else in the tree: your city
must be a subarea of the right province.<br>
<br>
I don't know the cities you speak of, but we have a similar case in
Belgium.<br>
Even a bit more complicated.<br>
We use country > region > arrondissement> province >
city/municipality.<br>
Brussels capital is a city that doesn't belong to province Brabant
where it's in, not even Flanders where Brabant is.<br>
Brussels-Capital belongs to Belgium directly as you can see in the
part of the quote that you removed.<br>
<br>
If you look at <a
href="https://www.openstreetmap.org/relation/2202162">France</a>,
you will see many subareas that are holes somewhere else.<br>
<blockquote type="cite">
<ul>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1403916"><bdi>Metropolitan
France</bdi> (<bdi>1403916</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1401835"><bdi>Guadeloupe</bdi>
(<bdi>1401835</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1891495"><bdi>Martinique</bdi>
(<bdi>1891495</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1260551"><bdi>French
Guiana</bdi> (<bdi>1260551</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1785276"><bdi>Réunion</bdi>
(<bdi>1785276</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1259885"><bdi>Mayotte</bdi>
(<bdi>1259885</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/3406826"><bdi>Saint
Pierre and Miquelon</bdi> (<bdi>3406826</bdi>)</a> as
subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/537967"><bdi>Saint
Barthélemy</bdi> (<bdi>537967</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/1891583"><bdi>Saint
Martin</bdi> (<bdi>1891583</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/3412448"><bdi>Wallis
and Futuna</bdi> (<bdi>3412448</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/3412620"><bdi>French
Polynesia</bdi> (<bdi>3412620</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/2186658"><bdi>French
Southern and Antarctic Lands</bdi> (<bdi>2186658</bdi>)</a>
as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/2573009"><bdi>Clipperton
Island</bdi> (<bdi>2573009</bdi>)</a> as subarea</li>
<li class="relation">Relation <a title=""
href="https://www.openstreetmap.org/relation/3407643"><bdi>New
Caledonia</bdi> (<bdi>3407643</bdi>)</a> as subarea</li>
</ul>
</blockquote>
In the north of BE there are such holes belonging to NL and even
some of those NL hole have holes belonging to BE !!!<br>
<br>
Subareas work for everything and they are a dream. One just has to
practice and understand them.<br>
<br>
Cheers
<br>
<br>
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<td>André.</td>
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