I want to calculate bond lengths of the SrFe2As2 parent compound for E//ab and E//c polarization with stand-alone atoms pack of the Demeter. How can I calculate bond lengths for these two different polarizations? There is a panel for polarization vector I guess that panel I should adjust. I should put (0,0,1) for E//c and E//ab (1,1,0) is this correct? What should I put let's say for 30 degrees of polarization? Thank you in advance,

Dr. Yasin HACISALIHOGLU