git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@14950 f3b2605a-c512-4ea7-a41b-209d697bcdaa

doc/html/_sources/angle_zero.txt

@@ -0,0 +1,59 @@
+.. index:: angle_style zero
+
+angle_style zero command
+========================
+
+Syntax
+""""""
+
+.. parsed-literal::
+
+   angle_style zero *nocoeff*
+
+Examples
+""""""""
+
+.. parsed-literal::
+
+   angle_style zero
+   angle_style zero nocoeff
+   angle_coeff *
+   angle_coeff * 120.0
+
+Description
+"""""""""""
+
+Using an angle style of zero means angle forces and energies are not
+computed, but the geometry of angle triplets is still accessible to
+other commands.
+
+As an example, the :doc:`compute angle/local <compute_angle_local>`
+command can be used to compute the theta values for the list of
+triplets of angle atoms listed in the data file read by the
+:doc:`read_data <read_data>` command.  If no angle style is defined,
+this command cannot be used.
+
+The optional *nocoeff* flag allows to read data files with AngleCoeff
+section for any angle style. Similarly, any angle_coeff commands
+will only be checked for the angle type number and the rest ignored.
+
+Note that the :doc:`angle_coeff <angle_coeff>` command must be used for
+all angle types. If specified, there can be only one value, which is
+going to be used to assign an equilibrium angle, e.g. for use with
+:doc:`fix shake <fix_shake>`.
+
+Restrictions
+""""""""""""
+ none
+
+Related commands
+""""""""""""""""
+
+:doc:`angle_style none <angle_none>`
+
+**Default:** none
+
+
+.. _lws: http://lammps.sandia.gov
+.. _ld: Manual.html
+.. _lc: Section_commands.html#comm