dimension.html
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dimension.html
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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>
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			<H3>dimension command
			</H3>
			<P><B>Syntax:</B>
			</P>
			<PRE>dimension N
			</PRE>
			<UL><LI>N = 2 or 3
			</UL>
			<P><B>Examples:</B>
			</P>
			<PRE>dimension 2
			</PRE>
			<P><B>Description:</B>
			</P>
			<P>Set the dimensionality of the simulation. By default LAMMPS runs 3d
			simulations. To run a 2d simulation, this command should be used
			prior to setting up a simulation box via the
			<A HREF = "create_box.html">create_box</A> or <A HREF = "read_data.html">read_data</A> commands.
			Restart files also store this setting.
			</P>
			<P>See the discussion in <A HREF = "Section_howto.html">Section_howto</A> for
			additional instructions on how to run 2d simulations.
			</P>
			<P>IMPORTANT NOTE: Some models in LAMMPS treat particles as finite-size
			spheres or ellipsoids, as opposed to point particles. In 2d, the
			particles will still be spheres or ellipsoids, not circular disks or
			ellipses, meaning their moment of inertia will be the same as in 3d.
			</P>
			<P><B>Restrictions:</B>
			</P>
			<P>This command must be used before the simulation box is defined by a
			<A HREF = "read_data.html">read_data</A> or <A HREF = "create_box.html">create_box</A> command.
			</P>
			<P><B>Related commands:</B>
			</P>
			<P><A HREF = "fix_enforce2d.html">fix enforce2d</A>
			</P>
			<P><B>Default:</B>
			</P>
			<PRE>dimension 3
			</PRE>
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