Hello again, I've continued my exploration and finally decided to have a look at the sandbox package http://www.ros.org/wiki/collision_octomap collision_octomap . It does not compile as it seems to use types that have been removed from octomap2, namely OcTreeSet and OcTreeVolumeOrder. ( /home/raph/rosnodes/collision_octomap/src/collision_octomap.cpp:337: error: ‘OcTreeSet’ is not a member of ‘octomap’ /home/raph/rosnodes/collision_octomap/src/collision_octomap.cpp:346: error: ‘OcTreeVolumeOrder’ is not a member of ‘octomap’ /home/raph/rosnodes/collision_octomap/src/collision_octomap.cpp:347: error: ‘OcTreeVolumeOrder’ is not a member of ‘octomap’ ) Does anyone know where to find their definition or what to replace them with? (as they are in no include files of octomap2/include). Thanks in advance Raph -- View this message in context: http://ros-users.122217.n3.nabble.com/weirdness-in-octomap-tp2241361p2242048.html Sent from the ROS-Users mailing list archive at Nabble.com.