Hi! I want to get the submap axes coordinates from .bt file. I got the .bt file from mesh file exported from blender, and transfer the mesh file to .bt file through binvox and binvox2bt. I try to build the coordinates wrapper between blender and octomap. In octovis, I saw the submap axes is exactly the original coordinates axes in blender, the question is how can I get the submap axes in octomap world coordinates? This should be easy to do since octovis can easily mark the submap axes, but how can I get this from .bt file directly?