1 .TH g_order 1 "Thu 16 Oct 2008"
3 g_order - computes the order parameter per atom for carbon tails
10 .BI "-s" " topol.tpr "
11 .BI "-o" " order.xvg "
12 .BI "-od" " deuter.xvg "
13 .BI "-os" " sliced.xvg "
14 .BI "-Sg" " sg-ang.xvg "
15 .BI "-Sk" " sk-dist.xvg "
28 Compute the order parameter per atom for carbon tails. For atom i the
29 vector i-1, i+1 is used together with an axis. The index file has to contain
30 a group with all equivalent atoms in all tails for each atom the
31 order parameter has to be calculated for. The program can also give all
32 diagonal elements of the order tensor and even calculate the deuterium
33 order parameter Scd (default). If the option -szonly is given, only one
34 order tensor component (specified by the -d option) is given and the
35 order parameter per slice is calculated as well. If -szonly is not
36 selected, all diagonal elements and the deuterium order parameter is
39 The tetrahedrality order parameters can be determined
40 around an atom. Both angle an distance order parameters are calculated. See
41 P.-L. Chau and A.J. Hardwick, Mol. Phys., 93, (1998), 511-518.
48 Trajectory: xtc trr trj gro g96 pdb cpt
56 Run input file: tpr tpb tpa
62 .BI "-od" " deuter.xvg"
66 .BI "-os" " sliced.xvg"
70 .BI "-Sg" " sg-ang.xvg"
74 .BI "-Sk" " sk-dist.xvg"
80 Print help info and quit
82 .BI "-nice" " int" " 19"
85 .BI "-b" " time" " 0 "
86 First frame (ps) to read from trajectory
88 .BI "-e" " time" " 0 "
89 Last frame (ps) to read from trajectory
91 .BI "-dt" " time" " 0 "
92 Only use frame when t MOD dt = first time (ps)
95 View output xvg, xpm, eps and pdb files
97 .BI "-[no]xvgr" "yes "
98 Add specific codes (legends etc.) in the output xvg files for the xmgrace program
100 .BI "-d" " enum" " z"
101 Direction of the normal on the membrane:
109 .BI "-sl" " int" " 1"
110 Calculate order parameter as function of boxlength, dividing the box in nr slices.
112 .BI "-[no]szonly" "no "
113 Only give Sz element of order tensor. (axis can be specified with -d)
115 .BI "-[no]unsat" "no "
116 Calculate order parameters for unsaturated carbons. Note that this cannot be mixed with normal order parameters.