Dear Julian,

I want to calculate the phonon eigenvector. When I included the keyword **include_imaginary** in input file, the eigenvector I got still has three columns of data. So I wonder if GULP can calculate the imaginary parts of phonon eigenvector.

Moreover, I got the following eigenvectors in which each mode has three columns. Can I understand these data as the displacement of atoms deviating from their equilibrium positions? Thanks very much.

Best regards,

Junwei