Babel is a distance-vector routing protocol for IPv6 and IPv4. It is designed to be robust and work efficiently on both wired networks and wireless mesh networks. License: MIT/X Consortium License Changes:
The main issue that this version fixes is a rather likely crash that could happen when interfaces were repeatedly brought down and then up. There are some minor tweaks to time handling that should prevent improper behaviour when the system clock is stepped on legacy platforms.
obminimize(1) User's Reference Manual obminimize(1)NAME
obminimize -- optimize the geometry, minimize the energy for a molecule
SYNOPSIS
obminimize [OPTIONS] filename
DESCRIPTION
The obminimize tool can be used to minimize the energy for molecules inside (multi-)molecule files (e.g., MOL2, etc.)
OPTIONS
If no filename is given, obminimize will give all options including the available forcefields.
-n steps
Specify the maximum number of steps (default=2500)
-cg Use conjugate gradients algorithm (default)
-sd Use steepest descent algorithm
-c criteria
Set convergence criteria (default=1e-6)
-ff forcefield
Select the forcefield
EXAMPLES
View the possible options, including available forcefields:
obminimize
Minimize the energy for the molecule(s) in file test.mol2:
obminimize test.mol2
Minimize the energy for the molecule(s) in file test.mol2 using the Ghemical forcefield:
obminimize -ff Ghemical test.mol2
Minimize the energy for the molecule(s) in file test.mol2 by taking at most 300 geometry optimization steps
obminimize -n 300 test.mol2
Minimize the energy for the molecule(s) in file test.mol2 using the steepest descent algorithm and convergence criteria 1e-5:
obminimize -sd -c 1e-5 test.mol2
SEE ALSO babel(1), obenergy(1), obrotamer(1).
The web pages for Open Babel can be found at: <http://openbabel.org/>
The web pages for Open Babel Molecular Mechanics can be found at: <http://openbabel.org/wiki/Molecular_mechanics>
AUTHORS
The minimize program was contributed by Tim Vandermeersch.
Open Babel is developed by a cast of many, including currrent maintainers Geoff Hutchison, Chris Morley, Michael Banck, and innumerable oth-
ers who have contributed fixes and additions. For more contributors to Open Babel, see <http://openbabel.org/wiki/THANKS>
COPYRIGHT
Copyright (C) 2007 by Tim Vandermeersch.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABIL-
ITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Open Babel 2.2 July 4, 2008 Open Babel 2.2