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<DIV><FONT size=4>Dear all GROMACS user :</FONT></DIV>
<DIV><FONT size=4> After generating the .ndx file which
contained only one group that one tail of DPPC,</FONT></DIV>
<DIV><FONT size=4> I use g_order to calculate order
parameters. But there are nothing in deuter.xvg and order.xvg file.</FONT></DIV>
<DIV><FONT size=4> The process is listed
below:</FONT></DIV>
<DIV><FONT size=4> step1: make_ndx -f XXX.pdb -o
index.ndx</FONT></DIV>
<DIV><FONT
size=4>
then type : a C17 C18 ... C31 (C31 is methyl and
C17...C30 is methylene in one tail of DPPC lipid)</FONT></DIV>
<DIV><FONT
size=4> then
type : name 3 sn_1 (0 is for
system, 1 is for DPPC, 2 is for SOL ) </FONT></DIV>
<DIV><FONT
size=4> then
type : q</FONT></DIV>
<DIV><FONT size=4></FONT> </DIV>
<DIV><FONT size=4> step2 : delete all groups in the index.ndx
except sn_1 group.</FONT></DIV>
<DIV><FONT size=4></FONT> </DIV>
<DIV><FONT size=4> step3 : g_order -f YYY.pdb -n
index.ndx -s .tpr -od </FONT></DIV>
<DIV><FONT size=4></FONT> </DIV>
<DIV><FONT size=4> Can someone tell me what wrong
is in my process ?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=4> Thank you
very
much. </FONT> </DIV></BODY></HTML>