Hi, attached is a patch that should fix the remaining possible problems regarding the reported Way.isClosed() and Coord.equals() problems. It seems that the use of IdentityHashMap is a bit slower than HashMap, so throughput is a few percent slower. Open question: What is the expected result of the style function is_closed() ? @WanMil: Please test if it creates proper precompiled boundaries and sea data. @Marko: Please check if the "converting anti-island" messages are gone now. Gerd closed-equal-v1.patch <http://gis.19327.n5.nabble.com/file/n5790123/closed-equal-v1.patch> -- View this message in context: http://gis.19327.n5.nabble.com/Patch-v1-distinguish-equal-and-identical-poin... Sent from the Mkgmap Development mailing list archive at Nabble.com.