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OBSPECTROPHORE(1) User's Reference Manual OBSPECTROPHORE(1) NAME obspectrophore -- SPECTROPHORE calculator SYNOPSIS obspectrophore [OPTIONS] -i input_file obspectrophore [-u | -h] DESCRIPTION obspectrophore can be used to generate Spectrophores, which are one-dimen- sional descriptors generated from the property fields surrounding the mole- cules. This technology allows the accurate description of molecules in terms of their surface properties or fields. Comparison of molecules prop- erty fields provides a robust structure-independent method of aligning ac- tives from different chemical classes. When applied to molecules such as ligands and drugs, Spectrophores can be used as powerful molecular descrip- tors in the fields of chemoinformatics, virtual screening, and QSAR model- ing. OPTIONS -i file Specifies the molecular input file from which Spectrophores are to be calculated. The filetype is automatically detected from the file ex- tension. -n value Specifies the kind of normalization that should be performed. Valid values are (without quotes): No (default), ZeroMean, UnitStd and Ze- roMeanAndUnitStd. -a value Specifies the required accuracy expressed as the angular stepsize. Only the following discrete values are allowed: 1 | 2 | 5 | 10 | 15 | 20 (default) | 30 | 36 | 45 | 60 -s value Specifies the kind of cages that should be used in terms of the un- derlying pointgroup: P1 or P-1. Valid values are (without quotes): No (default), Unique, Mirror and All. -r value Specifies the required resolution expressed as a real positive num- ber. The default value is 3.0 Angstrom. Negative values or a value equal to 0 generate an error message. -u Display implementation details. -h Display help message. SEE ALSO obabel(1). The web pages for Open Babel can be found at: <https://openbabel.org/> AUTHORS Open Babel is developed by a cast of many, including current maintainers Geoff Hutchison, Chris Morley, Michael Banck, and innumerable others who have contributed fixes and additions. For more contributors to Open Babel, see <https://openbabel.org/docs/Introduction/thanks.html> COPYRIGHT Copyright (C) 2005-2010 by Silicos NV This program is free software; you can redistribute it and/or modify it un- der the terms of the GNU General Public License as published by the Free Software Foundation version 2 of the License. The algorithm in this software has been covered by patent WO2009146735. However, Silicos NV and the inventors of the above mentioned patent assure that no patent infringment claims will be issued against individuals or in- stitutions that use this software under the GNU General Public License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FIT- NESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Open Babel 3.2 May 26, 2026 OBSPECTROPHORE(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | AUTHORS | COPYRIGHT
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