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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’m not sure that the place to post support/bug report requests, so please excuse me if it’s not the case.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m basically using GDAL/OGR to parse OSM files. I want to extract specific features, such as river and lakes.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m experiencing some issue with a specific relation.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The file (10MB) is available at the following url :
<a name="_Hlk47948154"></a><a href="http://www.imagine3d.fr/_temp/relation_8601362.osm"><span style="mso-bookmark:_Hlk47948154">http://www.imagine3d.fr/_temp/relation_8601362.osm</span><span style="mso-bookmark:_Hlk47948154"></span></a><span style="mso-bookmark:_Hlk47948154"></span><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The relation is #8601362, see </span><a href="https://www.openstreetmap.org/relation/8601362"><span lang="EN-US">https://www.openstreetmap.org/relation/8601362</span></a><span lang="EN-US">.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This relation has two members, #24338289 which is indeed a lake, and #532474841 which is not a lake.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, when parsing that with GDAL, the relation is exported as multipolygon, with two polygons, however, the multipolygon feature contains the fields of the lake (natural=water, water=lake), while the relation itself
should only contain type=boundary.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any idea how I could fix this ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’ve uploaded a screenshot showing the issue when opened in in QGIS:
<a href="http://www.imagine3d.fr/_temp/gdal_osm_02.jpg">http://www.imagine3d.fr/_temp/gdal_osm_02.jpg</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks a lot !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Gregory<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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