@staticmethod
def _create_metadata(dtm):
    """Returns a dict containing meta-information about a DTM"""
    return {'PATH': dtm.path, 'MESH_SCALE': dtm.mesh_scale,
        'DTM_RESOLUTION': dtm.terrain_resolution, 'BIN_SIZE': dtm.bin_size,
        'MAP_SIZE': dtm.map_size, 'MAP_SCALE': dtm.map_scale * dtm.
        unit_scale, 'UNIT_SCALE': dtm.unit_scale, 'IS_TERRAIN': True,
        'HAS_UV_MAP': True}
