You can try creating a sphere source and then use the animation view to set the z-value property of the sphere to change with time.  The link for more information on that is at <a href="http://paraview.org/Wiki/ParaView/Users_Guide/Animation">http://paraview.org/Wiki/ParaView/Users_Guide/Animation</a>.<br>
<br>The following python script is a bit long and has extra stuff in it (like the cylinder to give it perspective) but hopefully demonstrates this.  I created this script with ParaView 3.12&#39;s python trace but hopefully it works with your version too.<br>
=========================<br>try: paraview.simple
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">except: from paraview.simple import *</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">paraview.simple._DisableFirstRenderCameraReset()</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1 = Sphere()</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 35.0]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1 = GetRenderView()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">DataRepresentation1 = Show()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">DataRepresentation1.EdgeColor = [0.0, 0.0, 0.5000076295109483]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Cylinder1 = Cylinder()</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraPosition = [0.0, 0.0, 38.29037430412229]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraFocalPoint = [0.0, 0.0, 35.0]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraClippingRange = [2.262470561081065, 4.592229918684122]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CenterOfRotation = [0.0, 0.0, 35.0]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraParallelScale = 0.8516115354228021</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Cylinder1.Height = 10.0</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">DataRepresentation2 = Show()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">DataRepresentation2.EdgeColor = [0.0, 0.0, 0.5000076295109483]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1 = GetAnimationScene()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">SetActiveSource(Sphere1)</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">KeyFrameAnimationCue1 = GetAnimationTrack( &#39;Center&#39;, 2 )</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">TimeAnimationCue1 = GetTimeTrack()</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">KeyFrame294 = CompositeKeyFrame( KeyValues=[35.0] )</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">KeyFrame295 = CompositeKeyFrame( KeyTime=1.0, KeyValues=[0.0] )</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 31.11111111111111]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraViewUp = [0.0, 0.0, 1.0]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraPosition = [0.0, 72.08114679244352, 17.533493652939796]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraClippingRange = [61.41033532451908, 85.68736399433017]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.1111111111111111</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraFocalPoint = [0.0, 0.0, 17.533493652939796]</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CameraParallelScale = 18.655973582714857</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.CenterOfRotation = [0.0, 0.0, 17.533493652939796]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.1111111111111111</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">KeyFrameAnimationCue1.KeyFrames = [ KeyFrame294, KeyFrame295 ]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 27.22222222222222]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.2222222222222222</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.2222222222222222</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 23.333333333333336]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.3333333333333333</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.3333333333333333</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 19.444444444444443]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.4444444444444444</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.4444444444444444</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 15.555555555555554]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.5555555555555556</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.5555555555555556</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 11.666666666666668]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.6666666666666666</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.6666666666666666</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 7.777777777777779]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.7777777777777778</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.7777777777777778</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 3.8888888888888893]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 0.8888888888888888</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 0.8888888888888888</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Sphere1.Center = [0.0, 0.0, 0.0]</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">RenderView1.ViewTime = 1.0</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">AnimationScene1.AnimationTime = 1.0</p>

<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Render()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">===================<br></p><br><br><div class="gmail_quote">On Sat, Dec 31, 2011 at 9:26 AM, Rafael Pacheco <span dir="ltr">&lt;<a href="mailto:rpacheco@math.la.asu.edu">rpacheco@math.la.asu.edu</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Hello everybody,<br>
I have a sphere being towed down and settling on a horizontal wall as<br>
shown in the figures attached. The motion is prescribed, so the sphere is no<br>
free-falling. These figures are without rotation. But I also have several runs<br>
with different rates of rotation. What I would like to do is somehow automate<br>
the animation so that I do not have to move manually the sphere and take snap<br>
shots.<br>
<br>
For example, in the figures the sphere is located at the bottom of the<br>
horizontal wall, but at t=0, it is at z=35. so for t=0, z= 35 and the<br>
name of the flow field is boum000.vtk. For t=0.5, t=34.5 and the name<br>
of the flow field is boum001.vtk.<br>
<br>
What I normally do is to load all the boum*vtk, then move the sphere<br>
manually and save an image in png file as the sphere is moving down.<br>
<br>
For one set of simulations is OK to do this manually, but for 20<br>
different runs, I think it is going to be a pain in the neck.<br>
<br>
I will appreciate your help on this.<br>
<br>
thanks<br>
Rafael<br>
<br>
-- Rafael<br>
   ----------------------------------------<br>
   Department of Mathematics and Statistics<br>
   Arizona State University<br>
   Tempe, Arizona  85287-1804<br>
   Email: <a href="mailto:rpacheco@asu.edu">rpacheco@asu.edu</a><br>
   <a href="http://math.la.asu.edu/%7Erpacheco" target="_blank">http://math.la.asu.edu/~rpacheco</a><br>
   ----------------------------------------<br>
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