compute_rotate_gran.html
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compute_rotate_gran.html
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			<H3>compute rotate/gran command
			</H3>
			<P><B>Syntax:</B>
			</P>
			<PRE>compute ID group-ID rotate/gran
			</PRE>
			<UL><LI>ID, group-ID are documented in <A HREF = "compute.html">compute</A> command
			<LI>rotate/gran = style name of this compute command
			</UL>
			<P><B>Examples:</B>
			</P>
			<PRE>compute 1 all rotate/gran
			</PRE>
			<P><B>Description:</B>
			</P>
			<P>Define a computation that calculates the total rotational energy of a
			group of granular atoms.
			</P>
			<P>The rotational energy is calculated as the sum of 1/2 I w^2 over all
			the atoms in the group, where I is the moment of inertia of a
			disk/spherical (2d/3d) particle, and w is its angular velocity.
			</P>
			<P><B>Output info:</B>
			</P>
			<P>The scalar value calculated by this compute is "extensive", meaning it
			it scales with the number of atoms in the simulation.
			</P>
			<P><B>Restrictions:</B> none
			</P>
			<P><B>Related commands:</B> none
			</P>
			<P><B>Default:</B> none
			</P>
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