iFit/sw_econtract

 converts (Q,omega) values to Qm values for diffraction instrument

 Qm = SW_FLATCONE(Q,'Option1', Value,...) 

 Input:

 Q         Input values in reciprocal space in the scattering plane in
           Angstrom^-1 units, dimensions are [2 nQ].

 Options:

 omega     Energy transfer value in meV, default is zero.
 lambda    Wavelength of the incident beam in Angstrom.
 ki        Momentum of the incidend beam in Angstrom^-1.
 sense     Scattering sense:
               1       detectors are on the right hand side from the
                       incident beam direction, default.
              -1       detectors are on the left hand side from the
                       incident beam direction.

 See also SW_CONVERTER.