574e4067dc
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.
62 lines
1.4 KiB
ReStructuredText
62 lines
1.4 KiB
ReStructuredText
.. index:: angle\_style zero
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angle\_style zero command
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=========================
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Syntax
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""""""
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.. parsed-literal::
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angle_style zero *nocoeff*
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Examples
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""""""""
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.. parsed-literal::
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angle_style zero
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angle_style zero nocoeff
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angle_coeff \*
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angle_coeff \* 120.0
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Description
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"""""""""""
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Using an angle style of zero means angle forces and energies are not
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computed, but the geometry of angle triplets is still accessible to
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other commands.
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As an example, the :doc:`compute angle/local <compute_angle_local>`
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command can be used to compute the theta values for the list of
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triplets of angle atoms listed in the data file read by the
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:doc:`read\_data <read_data>` command. If no angle style is defined,
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this command cannot be used.
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The optional *nocoeff* flag allows to read data files with AngleCoeff
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section for any angle style. Similarly, any angle\_coeff commands
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will only be checked for the angle type number and the rest ignored.
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Note that the :doc:`angle\_coeff <angle_coeff>` command must be used for
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all angle types. If specified, there can be only one value, which is
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going to be used to assign an equilibrium angle, e.g. for use with
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:doc:`fix shake <fix_shake>`.
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Restrictions
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""""""""""""
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none
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Related commands
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""""""""""""""""
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:doc:`angle\_style none <angle_none>`
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**Default:** none
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.. _lws: http://lammps.sandia.gov
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.. _ld: Manual.html
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.. _lc: Commands_all.html
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