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<div><span></span><div style="font-size: 14px; line-height: 21px;">Dear QE community,</div><div style="font-size: 14px; line-height: 21px;"><br></div><div style="font-size: 14px; line-height: 21px;">I encountered a strange problem with visualization of pw.x output using XCrysden. I was visualizing the final structure after geometry optimization using Xcrysden. When the coordinates of atoms shown in Xcrysden in the unit of crystal, they are same with those in pw.x output. But after I switched the unit from crystal to alat, I found those values are a little different from what were written in pw.x output file. I first thought it may be caused by different calculation equations they used. But <span style="background-color: window; line-height: 1.5;">when I was visualizing the initial structure, the coordinates show in the unit of alat in pw.x output is completely same as the those in Xcrysden.</span></div><div style="font-size: 14px; line-height: 21px;"><br></div><div style="font-size: 14px; line-height: 21px;">I recognized a sentence at the end of pw.x output file before the scf calculation of the relaxed structure, "The G-vectors are recalculated for the final unit cell. Results may differ from those at the preceding step". I am not clear what these words mean here. Perhaps the parameters of unit cell is changed in the last scf calculation resulting the discrepancy between pw.x and Xcrysden? </div><div style="font-size: 14px; line-height: 21px;"><br></div><div style="font-size: 14px; line-height: 21px;">Thanks a lot for your kind help!</div><div style="font-size: 14px; line-height: 21px;"><br></div><div style="font-size: 14px; line-height: 21px;">Best Regards,</div><div style="font-size: 14px; line-height: 21px;">Yin</div></div><hr style="width: 210px; height: 1px;" color="#b5c4df" size="1" align="left">
<div><span><div style="margin: 10px; font-family: verdana; font-size: 15px;"><span style="color: rgb(0, 0, 0); background-color: rgba(0, 0, 0, 0);">Dr. Yin Li <br>Department of Biophysics,Medical School, University of Pecs,<br>No.12 Szigeti Street, Pecs, H-7624, HUNGARY<br>Phone: +36-72-535271/36271</span></div></span></div>
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