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lammps/doc/rst/improper_zero.rst
Richard Berger 574e4067dc Add documentation files in RST format
This is the first step for moving the documentation format from *.txt to the
*.rst format.

In the last years we've been automatically converting txt files from Steve's
markup into RST to generate the documentation pages via Sphinx. The decision
has now been made to fully migrate to RST and avoid the conversion in the
future.

This will enable us to fully use RST and Sphinx to improve the documentation.

For the intermediate period, while there are still pending PRs with
documentation changes, we will keep both source files and update the RST files
accordingly.
2019-08-22 14:11:32 -06:00

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ReStructuredText

.. index:: improper\_style zero
improper\_style zero command
============================
Syntax
""""""
.. parsed-literal::
improper_style zero *nocoeff*
Examples
""""""""
.. parsed-literal::
improper_style zero
improper_style zero nocoeff
improper_coeff \*
Description
"""""""""""
Using an improper style of zero means improper forces and energies are
not computed, but the geometry of improper quadruplets is still
accessible to other commands.
As an example, the :doc:`compute improper/local <compute_improper_local>` command can be used to
compute the chi values for the list of quadruplets of improper atoms
listed in the data file read by the :doc:`read\_data <read_data>`
command. If no improper style is defined, this command cannot be
used.
The optional *nocoeff* flag allows to read data files with a ImproperCoeff
section for any improper style. Similarly, any improper\_coeff commands
will only be checked for the improper type number and the rest ignored.
Note that the :doc:`improper\_coeff <improper_coeff>` command must be
used for all improper types, though no additional values are
specified.
Restrictions
""""""""""""
none
**Related commands:** none
:doc:`improper\_style none <improper_none>`
**Default:** none
.. _lws: http://lammps.sandia.gov
.. _ld: Manual.html
.. _lc: Commands_all.html