To fit a plane to a set of points by least squares
David Mervyn Blow · Acta Crystallographica · 1960
A correct solution is offered to the least-squares plane problem by Schomaker, Waser, Marsh & Bergman (1959) (SWMB), in which the whole calculation is carried through in crystal lattice coordinates.This may cause a more simple and direct method of solution, attained by working in Cartesian coordinates, to be overlooked.In Cartesian coordinates, as SWMB mention, g is the unit matrix.The secular equation IA-~gl =0 is then readily solved without calculation of an adjoint matrix.It may be ex-