From cb7dd67f2560fe9b104e72f97fc30ae706dd4271 Mon Sep 17 00:00:00 2001
From: sjplimp <sjplimp@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Fri, 1 Jun 2012 21:34:49 +0000
Subject: [PATCH] git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@8209
 f3b2605a-c512-4ea7-a41b-209d697bcdaa

---
 doc/fix_move.html | 19 +++++++++++++++++++
 doc/fix_move.txt  | 19 +++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/doc/fix_move.html b/doc/fix_move.html
index c41d323798..d6b67ea284 100644
--- a/doc/fix_move.html
+++ b/doc/fix_move.html
@@ -94,6 +94,14 @@ then the position and velocity of that component is time integrated
 the same as the <A HREF = "fix_nve.html">fix nve</A> command would perform, using
 the corresponding force component on the atom.
 </P>
+<P>Note that the <I>linear</I> style is identical to using the <I>variable</I>
+style with an <A HREF = "variable.html">equal-style variable</A> that uses the
+vdisplace() function.  E.g.
+</P>
+<PRE>variable V equal 10.0
+variable x equal vdisplace(0.0,$V)
+fix 1 boundary move variable v_x NULL NULL v_V NULL NULL 
+</PRE>
 <P>The <I>wiggle</I> style moves atoms in an oscillatory fashion, so that
 their position <I>X</I> = (x,y,z) as a function of time is given in vector
 notation as
@@ -110,6 +118,17 @@ position and velocity of that component is time integrated the same as
 the <A HREF = "fix_nve.html">fix nve</A> command would perform, using the
 corresponding force component on the atom.
 </P>
+<P>Note that the <I>wiggle</I> style is identical to using the <I>variable</I>
+style with <A HREF = "variable.html">equal-style variables</A> that use the
+swiggle() and cwiggle() functions.  E.g.
+</P>
+<PRE>variable A equal 10.0
+variable T equal 5.0
+variable omega equal 2.0*PI/$T
+variable x equal swiggle(0.0,$A,$T)
+variable v equal v_omega*($A-cwiggle(0.0,$A,$T))
+fix 1 boundary move variable v_x NULL NULL v_v NULL NULL 
+</PRE>
 <P>The <I>rotate</I> style rotates atoms around a rotation axis <I>R</I> =
 (Rx,Ry,Rz) that goes thru a point <I>P</I> = (Px,Py,Pz).  The <I>period</I> of
 the rotation is also specified.  This style also sets the velocity of
diff --git a/doc/fix_move.txt b/doc/fix_move.txt
index a07bd3307a..794be2a404 100644
--- a/doc/fix_move.txt
+++ b/doc/fix_move.txt
@@ -85,6 +85,14 @@ then the position and velocity of that component is time integrated
 the same as the "fix nve"_fix_nve.html command would perform, using
 the corresponding force component on the atom.
 
+Note that the {linear} style is identical to using the {variable}
+style with an "equal-style variable"_variable.html that uses the
+vdisplace() function.  E.g.
+
+variable V equal 10.0
+variable x equal vdisplace(0.0,$V)
+fix 1 boundary move variable v_x NULL NULL v_V NULL NULL :pre
+
 The {wiggle} style moves atoms in an oscillatory fashion, so that
 their position {X} = (x,y,z) as a function of time is given in vector
 notation as
@@ -101,6 +109,17 @@ position and velocity of that component is time integrated the same as
 the "fix nve"_fix_nve.html command would perform, using the
 corresponding force component on the atom.
 
+Note that the {wiggle} style is identical to using the {variable}
+style with "equal-style variables"_variable.html that use the
+swiggle() and cwiggle() functions.  E.g.
+
+variable A equal 10.0
+variable T equal 5.0
+variable omega equal 2.0*PI/$T
+variable x equal swiggle(0.0,$A,$T)
+variable v equal v_omega*($A-cwiggle(0.0,$A,$T))
+fix 1 boundary move variable v_x NULL NULL v_v NULL NULL :pre
+
 The {rotate} style rotates atoms around a rotation axis {R} =
 (Rx,Ry,Rz) that goes thru a point {P} = (Px,Py,Pz).  The {period} of
 the rotation is also specified.  This style also sets the velocity of