The order of derivatives.

  • = 0 , only the angles is computed. The first three numbers of PVAJ are valid for the results.
  • = 1 , only the angles and the first derivative are computed. The first six numbers of PVAJ are valid for the results.
  • = 2 , only the angles and the first and second derivatives are computed. The first nine numbers of PVAJ are valid for the results.
  • = 3 , the angles and the first, second and third derivatives are computed. The first twelve numbers of PVAJ are valid for the results.

If order equals to 1, the behavior of calcephpy.CalcephBin.orient_order() is the same as calcephpy.CalcephBin.orient_unit().