fix_gran_diag.html
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fix_gran_diag.html
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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>Restrictions:</B>
			</P>
			<P>Can only be used if LAMMPS was built with the "granular" package.
			</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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