Transform one [x,y] into another using a linear model of the type produced by the slaFitxy routine.
xc1 double x-coordinate yc1 double y-coordinate
coeffs double transformation coefficients (see note) *xc2 double x-coordinate *yc2 double y-coordinate The model relates two sets of [x,y] coordinates as follows.
coeffs = a coeffs = b coeffs = c coeffs = d coeffs = e coeffs = f
xc2 = a + b*xc1 + c*yc1 yc2 = d + e*xc1 + f*yc1 See also slaFitxy, slaPxy, slaInvf, slaDcmpf. P.T.Wallace Starlink 22 December 1993