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<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
</CENTER>
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<H3>fix gran/diag command
</H3>
<P><B>Syntax:</B>
</P>
<PRE>fix ID group-ID gran/diag nevery file zlayer
</PRE>
<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
<LI>gran/diag = style name of this fix command
<LI>nevery = compute diagnostics every this many timesteps
<LI>file = filename to store diagnostic info in
<LI>zlayer = bin size in z dimension
</UL>
<P><B>Examples:</B>
</P>
<PRE>fix 1 all gran/diag 1000 tmp 0.9
</PRE>
<P><B>Description:</B>
</P>
<P>Compute aggregate density, velocity, and stress diagnostics for a
group of granular atoms as a function of z depth in the granular
system. The results are written to 3 files named file.den, file.vel,
and file.str. The z bins begin at the bottom of the system and extend
upward with a thickness of <I>zlayer</I> for each bin. The quantities
written to the file are averaged over all atoms in the bin.
</P>
<P><B>Restart, fix_modify, thermo output, run start/stop, minimize info:</B>
</P>
<P>No information about this fix is written to <A HREF = "restart.html">binary restart
files</A>. None of the <A HREF = "fix_modify.html">fix_modify</A> options
are relevant to this fix. No quantities calculated by this fix can be
output by the <A HREF = "thermo_style.html">thermo_style custom</A> command. No
parameter of this fix can be used with the <I>start/stop</I> keywords of
the <A HREF = "run.html">run</A> command. This fix is not invoked during <A HREF = "minimize.html">energy
minimization</A>.
</P>
<P><B>Restrictions:</B>
</P>
<P>This fix is part of the "granular" package. It is only enabled if
LAMMPS was built with that package. See the <A HREF = "Section_start.html#2_3">Making
LAMMPS</A> section for more info.
</P>
<P><B>Related commands:</B>
</P>
<P><A HREF = "atom_style.html">atom_style granular</A>
</P>
<P><B>Default:</B> none
</P>
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