fine the scattering plane, we give two reciprocal space vectors in that plane: <b>u</b>=(0,1,0) and <b>v</b>=(0,0,1).</p><pre class="codeinput">banbSpec = banb.spinwave({[0 -1 1] [0 -1 -2] 500});
banbSpec.hkl  = -banbSpec.hkl;
banbSpec.hklA = -banbSpec.hklA;
banbSpec = sw_neutron(banbSpec,<span class="string">'pol'</span>,true,<span class="string">'uv'</span>,{[0 1 0] [0 0 1]});

figure
banbSpec = sw_egrid(banbSpec,<span class="string">'component'</span>,<span class="string">'Sperp'</span>,<span class="stri