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<li class="toctree-l1 current"><a class="reference internal" href="angles.html">Angle Styles</a><ul class="current">
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<li class="toctree-l2"><a class="reference internal" href="angle_amoeba.html">angle_style amoeba command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_charmm.html">angle_style charmm command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_class2.html">angle_style class2 command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_class2.html#angle-style-class2-p6-command">angle_style class2/p6 command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine.html">angle_style cosine command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_buck6d.html">angle_style cosine/buck6d command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_delta.html">angle_style cosine/delta command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_periodic.html">angle_style cosine/periodic command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_shift.html">angle_style cosine/shift command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_shift_exp.html">angle_style cosine/shift/exp command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_squared.html">angle_style cosine/squared command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cosine_squared_restricted.html">angle_style cosine/squared/restricted command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_cross.html">angle_style cross command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_dipole.html">angle_style dipole command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_fourier.html">angle_style fourier command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_fourier_simple.html">angle_style fourier/simple command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_gaussian.html">angle_style gaussian command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_harmonic.html">angle_style harmonic command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_hybrid.html">angle_style hybrid command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_lepton.html">angle_style lepton command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_mesocnt.html">angle_style mesocnt command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_mm3.html">angle_style mm3 command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_none.html">angle_style none command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_quartic.html">angle_style quartic command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_spica.html">angle_style spica command</a></li>
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<li class="toctree-l2"><a class="reference internal" href="angle_table.html">angle_style table command</a></li>
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<li class="toctree-l2 current"><a class="current reference internal" href="#">angle_style zero command</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#syntax">Syntax</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#examples">Examples</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#related-commands">Related commands</a></li>
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<li class="breadcrumb-item active">angle_style zero command</li>
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<a href="https://www.lammps.org"><img src="_static/lammps-logo.png" width="64" height="16" alt="LAMMPS Homepage"></a> | <a href="Commands_all.html">Commands</a>
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<p><span class="math notranslate nohighlight">\(\renewcommand{\AA}{\text{Å}}\)</span></p>
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<section id="angle-style-zero-command">
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<span id="index-0"></span><h1>angle_style zero command<a class="headerlink" href="#angle-style-zero-command" title="Link to this heading"></a></h1>
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<section id="syntax">
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<h2>Syntax<a class="headerlink" href="#syntax" title="Link to this heading"></a></h2>
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<div class="highlight-LAMMPS notranslate"><div class="highlight"><pre><span></span><span class="k">angle_style</span><span class="w"> </span><span class="n">zero</span><span class="w"> </span><span class="n">keyword</span>
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</pre></div>
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</div>
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<ul class="simple">
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<li><p>zero or more keywords may be appended</p></li>
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<li><p>keyword = <em>nocoeff</em></p></li>
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</ul>
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</section>
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<section id="examples">
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<h2>Examples<a class="headerlink" href="#examples" title="Link to this heading"></a></h2>
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<div class="highlight-LAMMPS notranslate"><div class="highlight"><pre><span></span><span class="k">angle_style</span><span class="w"> </span><span class="n">zero</span>
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<span class="k">angle_style</span><span class="w"> </span><span class="n">zero</span><span class="w"> </span><span class="n">nocoeff</span>
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<span class="k">angle_coeff</span><span class="w"> </span><span class="o">*</span>
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<span class="k">angle_coeff</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="m">120.0</span>
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</pre></div>
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</div>
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</section>
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<section id="description">
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<h2>Description<a class="headerlink" href="#description" title="Link to this heading"></a></h2>
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<p>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.</p>
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<p>As an example, the <a class="reference internal" href="compute_angle_local.html"><span class="doc">compute angle/local</span></a>
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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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<a class="reference internal" href="read_data.html"><span class="doc">read_data</span></a> command. If no angle style is defined,
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this command cannot be used.</p>
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<p>The optional <em>nocoeff</em> flag allows to read data files with AngleCoeff
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section for any angle style. Similarly, any <a class="reference internal" href="angle_coeff.html"><span class="doc">angle_coeff</span></a> commands
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will only be checked for the angle type number and the rest ignored.</p>
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<p>Note that the <a class="reference internal" href="angle_coeff.html"><span class="doc">angle_coeff</span></a> 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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<a class="reference internal" href="fix_shake.html"><span class="doc">fix shake</span></a>.</p>
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</section>
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<section id="restrictions">
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<h2>Restrictions<a class="headerlink" href="#restrictions" title="Link to this heading"></a></h2>
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<blockquote>
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<div><p>none</p>
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</div></blockquote>
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</section>
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<section id="related-commands">
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<h2>Related commands<a class="headerlink" href="#related-commands" title="Link to this heading"></a></h2>
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<p><a class="reference internal" href="angle_none.html"><span class="doc">angle_style none</span></a></p>
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</section>
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<section id="default">
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<h2>Default<a class="headerlink" href="#default" title="Link to this heading"></a></h2>
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<p>none</p>
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</section>
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<p>© Copyright 2003-2025 Sandia Corporation.</p>
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