SKEW -- shifts row of a frame to add or subtract positions computed from
a fit file dumped by track. i.e. skew can straigten a spectrum or
do the reverse.
The shifting is accomplished by rebinning which smooths somewhat and
therefore skew is not a reversible operation. It should not be used say in
combination with extopt to extract spectra. Use profit and optext
instead.
Parameters:
IMAGE -- Data frame to skew
TRACK -- spectrum position poly to use
SKEWED -- the output frame
YSTART, YEND -- the range in Y to skew
REMOVE -- TRUE to remove rather than add the fit.
REBIN -- Method of rebinning. Linear, quadratic or sin x/x
interpolation. (The latter is best if profiles are
undersampled.)
This command belongs to the class: tilted