Next message: Marcel E. Tschudin: "Re: Refraction and dip"
Bill you asked:
"Has the angular distance off in longitude been adjusted by the program for
latitude, therefore should be translated directly into nautical miles by
converting to decimal degrees and multiplying by 60, or should an
adjustment
be made for latitude when determining nautical miles off?"
Frank responded:
It's approximate error in longitude so multiply by cos(Lat) if you want
nautical miles. Actually, the code is doing nothing more than multiplying
your distance error by 30. One of these days I'll modify it to give a more
accurate longitude error (which depends on the rate of change of the actual
distance but is generally close to 30).
Frank
Thanks again. Assumed longitude was indeed just that, but second guessing a
genius is, IMHO, a poor practice ;-)
Bill
