.. _pilot.Sample: pilot.Sample ============ .. cpp:namespace:: pilot::Sample Class ----- `Sample` is a base class for any type requiring a time stamp as well as a coordinate system. Fields ------ .. cpp:member:: long time POSIX timestamp in [usec] .. cpp:member:: string frame Coordinate system name, usually ``map``, ``odom`` or ``base_link``, see :ref:`coordinate_systems`.