FourCornerLocalizer does not need flight direction

[garydoranjr]

pdsc/pdsc/localization.py

Lines 359 to 392 in 74893bb

	class FourCornerLocalizer(GeodesicLocalizer):
	"""
	The :py:class:`FourCornerLocalizer` is a type of localizer that is used when
	observation locations are described using the latitude and longitude of the
	four corners of the observation.
	"""
	def __init__(self, corners, n_rows, n_cols, flight_direction):
	"""
	:param corners:
	an ordered collection of the four image corners, each a latitude and
	east longitude pair (in degrees); the order of the corners is:
	- top left
	- bottom left
	- bottom right
	- top right
	:param n_rows: the number of rows in the image
	:param n_cols: the number of columns in the image
	:param flight_direction:
	a multiplicative factor indicating the direction of flight relative
	to the :math:`y`-direction in pixel space; if
	``flight_direction=1``, then the flight direction is from the the
	top down, whereas ``flight_direction=-1`` indicates a bottom-up
	direction of flight
	"""
	if n_rows <= 0: raise ValueError('No image rows')
	if n_cols <= 0: raise ValueError('No image columns')
	self.n_rows = n_rows
	self.n_cols = n_cols
	self.flight_direction = flight_direction

The flight direction is set for the FourCornerLocalizer, but it is never actually used. It should be removed to simplify the interface.