The X-PLOR orthogonalization/fractionalization convention defines a in same direction as x; b is chosen such that y is in the plane defined by a and b. This convention is used by all X-PLOR routines. To avoid difficulties when using a different convention, read the coordinates, fractionalize them according to your convention, and then orthogonalize them using the X-PLOR convention.
xrefin {===>} coor @your_convention.coordinates coor rotate {===>} matrix=( 0.0333 0. 0.0192 ) {*Use your convention.*} ( 0. 0.02 0. ) ( 0. 0. 0.0192 ) end coor translate vector=( 0. 0. 0. ) {*Translate if necessary.*} end {===>} xrefin a=30. b=50. c=60. beta=120 end {*Unit cell.*} coor orthogonalize end {===>} write coordinates output=xplor_convention.coordinates end