returns axis labels for spectrum plot [xLabel, xAxis] = SW_LABEL(hkl,hklA) hkl Momentum transfer values in r.l.u., dimensions are [3 nQ]. hklA Momentum transfer values in Angstrom^-1, dimensions are [3 nQ]. It returns the label and axis vector for the x-axis for momentum transfer scans linear in reciprocal space. See also SW_PLOTSPEC.