<div dir="ltr"><div class="gmail_quote"><div dir="ltr">All,<div><br></div><div>I thought I'd forward this onto the paraview list in case somebody could think of a way to do this? Please see my email below which I originally sent to the vtk user list. Any help would be very much appreciated, including the fact that it just cannot be done. I would in particular welcome thoughts from those who have helped develop the xdmf2 lib within the paraview source.</div>
<div><br>Many thanks again,</div><div>Andy<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>Date: 23 November 2013 17:13<br>Subject: [vtkusers] Explicit numbering of nodes for Xdmf/h5<br>To: "<a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a>><br>
<br><br><div dir="ltr">All,<div><br></div><div>In an effort to spark some comments I thought I'd try to provide a small example for what I want to do in case my previous post (below) was unclear. Below is a valid xdmf file that paraview understands for a plane.<br>
<div class="gmail_extra"><br></div><div class="gmail_extra"><div class="gmail_extra"><?xml version="1.0"?></div><div class="gmail_extra"><!DOCTYPE Xdmf SYSTEM "Xdmf.dtd"></div><div class="gmail_extra">
<Xdmf xmlns:xi="<a href="http://www.w3.org/2003/XInclude" target="_blank">http://www.w3.org/2003/XInclude</a>" Version="2.2"></div><div class="gmail_extra"> <Domain></div><div class="gmail_extra">
<Grid GridType="Uniform"></div>
<div class="gmail_extra"> <Topology TopologyType="Quadrilateral" Dimensions="1"></div><div class="gmail_extra"> <DataItem Dimensions="1 4" NumberType="Int" Precision="8" Format="XML"></div>
<div class="gmail_extra"> 0 1 3 2 </div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></DataItem></div><div class="gmail_extra"> </Topology></div><div class="gmail_extra">
<Geometry GeometryType="XYZ"></div><div class="gmail_extra"> <DataItem Dimensions="4 3" NumberType="Float" Precision="4" Format="XML"></div><div class="gmail_extra">
<span style="white-space:pre-wrap"> </span> -0.5 -0.5 0 </div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> 0.5 -0.5 0 </div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> -0.5 0.5 0 </div>
<div class="gmail_extra"><span style="white-space:pre-wrap"> </span> 0.5 0.5 0 </div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span></DataItem></div><div class="gmail_extra"> </Geometry></div>
<div class="gmail_extra"> </Grid></div><div class="gmail_extra"> </Domain></div><div class="gmail_extra"></Xdmf></div><div><br></div><div>--- Now, what I want to do is to allow for the fact that the nodes defining this plane, may happen to be labelled 300, 20, 22, 80 instead of 0->3. The key point being that there is still only 4 nodes, not 300 in the file for which I only need 4 to define the geom, but need to write out 300 to all for the 0-based implicit ordering. Therefore, I'd like a section in the geom part of the xmf file to qualify this numbering. It doesn't bother me if they're subsequently renumbered inside paraview/vtk, only that I don't have to, as this is a simplistic version of something more complicated. So to be verbose, it should now look like:</div>
<div><br></div><div><div><?xml version="1.0"?></div><div><!DOCTYPE Xdmf SYSTEM "Xdmf.dtd"></div><div><Xdmf xmlns:xi="<a href="http://www.w3.org/2003/XInclude" target="_blank">http://www.w3.org/2003/XInclude</a>" Version="2.2"></div>
<div> <Domain></div><div> <Grid GridType="Uniform"></div><div> <Topology TopologyType="Quadrilateral" Dimensions="1"></div><div> <DataItem Dimensions="1 4" NumberType="Int" Precision="8" Format="XML"></div>
<div> <b> 300 20 22 80 </b></div><div><span style="white-space:pre-wrap"> </span></DataItem></div><div> </Topology></div><div> <Geometry GeometryType="<b>XYZ_Explicit</b>"></div>
<div> <DataItem Dimensions="4 3" NumberType="Float" Precision="4" Format="XML"></div><div><b><span style="white-space:pre-wrap"> </span> 20 -0.5 -0.5 0 </b></div><div>
<b><span style="white-space:pre-wrap"> </span> 22 0.5 -0.5 0 </b></div><div><b><span style="white-space:pre-wrap"> </span> 80 -0.5 0.5 0 </b></div><div><b><span style="white-space:pre-wrap"> </span> 300 0.5 0.5 0 </b></div>
<div><span style="white-space:pre-wrap"> </span></DataItem></div><div> </Geometry></div><div> </Grid></div><div> </Domain></div><div></Xdmf></div></div><div><br></div><div>Can this be done, or could this be done in the future? Am I being daft and there is an easy way to do this?</div>
<div><br>Cheers again,</div><div>Andy</div><div><div class="gmail_extra"><br></div></div></div></div></div></div></div></div>
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