I'm using some on-board methods that give an XY position and want to send this to PX4, I believe this is correct message: http://mavlink.org/messages/common#VISION_POSITION_ESTIMATE (via MAVROS listening to vision_pose tf in ROS)
What is the recommended way to tell px4 to ignore parts of the vision message (like orientation and z position)? should I,
just set a high variance/co-variance on the items to be ignored? or is there a better way to "false" out unused variables?