<div>Scott,</div><div><br></div><div>Let me hopefully clarify some of this to you and others on the list. I have been working on VTK/Titan/Infovis/OverView/OpenView for a while and names and projects have morphed over time.</div>
<div><br></div><div>As you know, <b>infovis in VTK</b> exists in VTK/Infovis, VTK/Views/Infovis, and scattered other places throughout VTK. It enables things like graph/tree/table processing, statistics, charts, node-link diagrams, graph layout, etc.</div>
<div><br></div><div><b>Titan</b> is now a separate repository (see <a href="http://titan.sandia.gov">titan.sandia.gov</a>) which focuses on scalable analysis algorithms like text processing, clustering, etc. It exposes most of this as components that can be used in a VTK pipeline, but contains no additional visualization capabilities.</div>
<div><br></div><div><b>OverView</b> was a project a few years back to explore integrating infovis in VTK into the ParaView framework. It has since been deprecated.</div><div><br></div><div><b>OpenView</b> is a new open source project (not-yet-released) that approaches OverView's goals in a slightly different way. The name changed mostly because another unrelated OverView infovis toolkit has since been released by AP. OpenView uses ParaView as a framework, but is not as tied to ParaView as OverView was. The processing algorithms exposed as plugins in OpenView are usable in ParaView but the views will need a bit more work to be usable by both applications.</div>
<div><br></div><div>I hope that helps clarify things. To mix things up even further, there is a new (as in a few days ago) vtkGraphItem in VTK that is made to be simpler and more efficient than vtkGraphLayoutView. Feel free to take a look at it and provide feedback, there will be more features coming there soon.</div>
<div><br></div><div>And yes there is a basic Tulip reader in VTK but no graphviz reader.</div><div><br></div><div>Jeff</div><br><div class="gmail_quote">On Fri, Jul 13, 2012 at 5:14 PM, Scott Kelly <span dir="ltr"><<a href="mailto:stk@veritegroup.com" target="_blank">stk@veritegroup.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Thanks for the information.<br>
<br>
I also looked into Titan, from reading it looks like Titan is developed within VTK. So downloading and installing vtk should also include active Titan work. Did I understand this correctly?<br>
<br>
Further, it seemed that vtk/Titan is closely integrated with ParaView. Does this mean Titan functionality is integrated into ParaView. It would be great if I could use ParaView to generate and view large graphs. Are there any prebuilt plugins for ParaView that support Tulip or GraphViz graphs?<br>
<br>
Thanks,<br>
Scott<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
On Jul 13, 2012, at 7:42 AM, David E DeMarle wrote:<br>
<br>
> I don't personally know how the large graphs were rendered so<br>
> efficiently. Hopefully Jeff Baumes and the Sandia developers will<br>
> chime in.<br>
><br>
> OverView morphed into what Sandia now calls the Titan project. Again<br>
> hopefully someone on that team will chime in about it.<br>
><br>
> David E DeMarle<br>
> Kitware, Inc.<br>
> R&D Engineer<br>
> 21 Corporate Drive<br>
> Clifton Park, NY 12065-8662<br>
> Phone: <a href="tel:518-881-4909" value="+15188814909">518-881-4909</a><br>
><br>
><br>
> On Mon, Jul 9, 2012 at 1:17 PM, Scott Kelly <<a href="mailto:stk@veritegroup.com">stk@veritegroup.com</a>> wrote:<br>
>> I'm attempting to use VTK to render large graphs and am having issues once I get to about 500 edges and 1000 vertices. The 3D rendering is slow to rotate and zoom. I'm using the built in vtkRandomGraphSource with a vtkForceDirectedLayoutStrategy. I've seen some great graph examples on the web and I'm wondering how they were able to render the graphs and rotate them efficiently. Any ideas on how to render large graphs efficiently in vtk?<br>
>><br>
>> Also, what ever happened to the development of OverView? The latest ParaView doesn't have the graph layout view and has no way to import Tulip or GraphViz graphs. Is the integration of OverView into ParaView still happening or has it been abandoned?<br>
>><br>
>> Thanks in advance,<br>
>> Scott<br>
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</div></div></blockquote></div><br>