When the crystallographic axes have been defined, the axial ratios are calculated from the crystallographic parameters as follows:
Function AxialRatios(A, B, C, labela, labelb, labelc) ' Calculates the axial ratios from unit cell dimensions. ' A:B:C B=1 (A=A/B) (C=C/B) ' A:B A=1 (B=B/A) ' From Mason, 1963
See Prof. Stephen A. Nelson discussion from Tulane University