<br><br><div class="gmail_quote">On Wed, Oct 17, 2012 at 10:35 AM, Peter Wendorff <span dir="ltr"><<a 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 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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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></div></blockquote><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></div>