/Raw data...data not cooked!
so, if you are getting just data from radio nav without further (cooking), or reinterpretation, it is raw data.
to me, raw data is: heading indicator, attitude indicator, airspeed, altimeter and vertical speed (IVSI optional)...a ball for slip/skid.
nav data, RAW is simply a needle showing either bearing or displacement from selected course.
using a magenta line to follow a llocalizer just reminds us that a true localizer becomes more sensative as you approach the antenna. a magenta line shows constant displacement in terms of miles...not angular.
and a real raw data NDB has the audio morse identifier constantly heard in the background to verify validity of signal.