<div>Dear Andrea:</div>
<div><br>>The symmetry analysis of the displacement patterns is implemented only in ph.x.<br>>Presently matdyn.x does not use symmetry and cannot do the<br>>symmetry analysis as in bands.x.<br> </div>
<div>Thank you very much for you explanation :）<br>____________________________________<br>Hui Wang<br>School of physics, Nankai University, Tianjin, China </div>