Boost C++ Libraries: Ticket #12294: boost::geometry::union_ empty result https://svn.boost.org/trac10/ticket/12294 <p> union_() sometimes return an empty result. It seems like there is a bug with union_() if some vertices are too close to each other. I inspected the polygons and they seem to be valid (no self intersections). I created a SHP file and WTK file with a few problematic polygons. The polygons are in pairs, and if you call union_() on each pair, the result will be empty. </p> en-us Boost C++ Libraries /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/12294 Trac 1.4.3 phelippeneveu@… Wed, 22 Jun 2016 18:11:52 GMT attachment set https://svn.boost.org/trac10/ticket/12294 https://svn.boost.org/trac10/ticket/12294 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">union.wkt</span> </li> </ul> <p> union pair polygons in WKT format </p> Ticket phelippeneveu@… Wed, 22 Jun 2016 18:13:44 GMT attachment set https://svn.boost.org/trac10/ticket/12294 https://svn.boost.org/trac10/ticket/12294 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">union.shp</span> </li> </ul> <p> union pair polygons in SHP format </p> Ticket phelippeneveu@… Wed, 22 Jun 2016 18:14:15 GMT attachment set https://svn.boost.org/trac10/ticket/12294 https://svn.boost.org/trac10/ticket/12294 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">union.shx</span> </li> </ul> <p> union pair polygons in SHX format </p> Ticket phelippeneveu@… Wed, 22 Jun 2016 18:23:45 GMT <link>https://svn.boost.org/trac10/ticket/12294#comment:1 </link> <guid isPermaLink="false">https://svn.boost.org/trac10/ticket/12294#comment:1</guid> <description> <p> I forgot to mention that I did my testing using version 1.61.0. </p> </description> <category>Ticket</category> </item> </channel> </rss>