1 .TH g_rmsdist 1 "Thu 16 Oct 2008"
3 g_rmsdist - calculates atom pair distances averaged with power 2, -3 or -6
10 .BI "-n" " index.ndx "
11 .BI "-equiv" " equiv.dat "
12 .BI "-o" " distrmsd.xvg "
13 .BI "-rms" " rmsdist.xpm "
14 .BI "-scl" " rmsscale.xpm "
15 .BI "-mean" " rmsmean.xpm "
16 .BI "-nmr3" " nmr3.xpm "
17 .BI "-nmr6" " nmr6.xpm "
18 .BI "-noe" " noe.dat "
26 .BI "-nlevels" " int "
30 g_rmsdist computes the root mean square deviation of atom distances,
31 which has the advantage that no fit is needed like in standard RMS
32 deviation as computed by g_rms.
33 The reference structure is taken from the structure file.
34 The rmsd at time t is calculated as the rms
35 of the differences in distance between atom-pairs in the reference
36 structure and the structure at time t.
39 g_rmsdist can also produce matrices of the rms distances, rms distances
40 scaled with the mean distance and the mean distances and matrices with
41 NMR averaged distances (1/r3 and 1/r6 averaging). Finally, lists
42 of atom pairs with 1/r3 and 1/r6 averaged distance below the
45 , which will default to 0.6 in this case)
46 can be generated, by default averaging over equivalent hydrogens
47 (all triplets of hydrogens named *[123]). Additionally a list of
48 equivalent atoms can be supplied (
50 ), each line containing
51 a set of equivalent atoms specified as residue number and name and
56 .B 3 SER HB1 3 SER HB2
60 Residue and atom names must exactly match those in the structure
61 file, including case. Specifying non-sequential atoms is undefined.
65 Trajectory: xtc trr trj gro g96 pdb cpt
69 Structure+mass(db): tpr tpb tpa gro g96 pdb
75 .BI "-equiv" " equiv.dat"
79 .BI "-o" " distrmsd.xvg"
83 .BI "-rms" " rmsdist.xpm"
85 X PixMap compatible matrix file
87 .BI "-scl" " rmsscale.xpm"
89 X PixMap compatible matrix file
91 .BI "-mean" " rmsmean.xpm"
93 X PixMap compatible matrix file
95 .BI "-nmr3" " nmr3.xpm"
97 X PixMap compatible matrix file
99 .BI "-nmr6" " nmr6.xpm"
101 X PixMap compatible matrix file
103 .BI "-noe" " noe.dat"
109 Print help info and quit
111 .BI "-nice" " int" " 19"
114 .BI "-b" " time" " 0 "
115 First frame (ps) to read from trajectory
117 .BI "-e" " time" " 0 "
118 Last frame (ps) to read from trajectory
120 .BI "-dt" " time" " 0 "
121 Only use frame when t MOD dt = first time (ps)
124 View output xvg, xpm, eps and pdb files
126 .BI "-[no]xvgr" "yes "
127 Add specific codes (legends etc.) in the output xvg files for the xmgrace program
129 .BI "-nlevels" " int" " 40"
130 Discretize rms in levels
132 .BI "-max" " real" " -1 "
133 Maximum level in matrices
135 .BI "-[no]sumh" "yes "
136 average distance over equivalent hydrogens