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<div class="moz-cite-prefix">Hi Igor.<br>
But if we're talking about topology, why (as I understand it) are
you trying to force topological stuff in the multipolygon
RELATION?<br>
That solves, well... nearly nothing.<br>
You have to do exactly the same work for any topological issues
that are not described by a mp relation, e.g. because they aren't
multipolygons, but distinct buildings, forests, water-surfaces or
whatever.<br>
There you have to do exactly what you don't want to do here and
where you want to have further restriction for multipolygon
relations.<br>
<br>
I would suggest you to work on the progress towards area types to
be part of the future api: discussion, decision and
implementation.<br>
I would like to see additional topology introduced: along,
beneath, .... are interesting, but yet difficult to get
topological relations for osm data users.<br>
<br>
But: Keep in mind that editing should not become more difficult
for mappers. If topology requires to assemble complex relations
that's no option.<br>
<br>
regards<br>
Peter<br>
<br>
Am 17.10.2012 12:58, schrieb Igor Brejc:<br>
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cite="mid:CA+CKBJHpsJD0QWFc-iuYW87tDc3-HjsUtu513B48y92LJ6iMhw@mail.gmail.com"
type="cite"><br>
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<div class="gmail_quote">On Wed, Oct 17, 2012 at 10:35 AM, Peter
Wendorff <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:wendorff@uni-paderborn.de" target="_blank">wendorff@uni-paderborn.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
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<div>And where's the problem?</div>
The island is part of the area described by the
multipolygon, as every other outer way is, too.<br>
It can be handled exactly the same as long as you don't want
to do special stuff according to topology, but then again
topology is missing for most osm model elements, yet (or:
you have to interpret it from the geometry yourself).<br>
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<div><br>
</div>
<div>Yes, the key word is topology. Moving beyond the Painter's
algorithm and simple map rendering. Having the ability to do
generalization with topology - polygon simplifications,
merging of polygons of similar landuse, detecting/removing
common edges, displacement, amalgamation etc. All in order to
produce more useful export data or vector maps. That's what
I've been doing for the last couple of months.</div>
<div><br>
</div>
<div>Igor</div>
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