Nevermind. It seems the problem solved itself. The format I sketched below is working for me, the only modification that I made was to remove the byte_order specification since it was leftover from me trying to testing out the binary data approach. My guess is that the problem was in needing to clear out ParaView rather than the way I was formatting the VTK files.<div>
<br></div><div>Jack</div><div><br><div class="gmail_quote">On Fri, Feb 11, 2011 at 1:00 PM, Jack Poulson <span dir="ltr"><<a href="mailto:jack.poulson@gmail.com">jack.poulson@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Okay, I have toyed around and gotten the pvti/vti files almost working, but when I load the pvti file and add a filter (i.e., threshold), then set it to color based upon my "cell_scalars" data, only one of my four process's data is displayed. I have been guessing as to what the appropriate WholeExtent and Extent choices are for each of the four processes. For completeness, here is a sketch of the parallel file and the four serial files (one for each quadrant of the square slab). I would greatly appreciate any help.<div>
<br></div><div>slab.pvti:</div><div><?xml version="1.0"?></div><div><VTKFile type="PImageData" version="0.1" byte_order="LittleEndian"></div><div> <PImageData WholeExtent="0 640 0 640 0 1" Origin="0 0 0 " Spacing = "1 1 1" GhostLevel="0"></div>
<div> <PCellData Scalars="cell_scalars"></div><div> <PDataArray type="Float64" Name="cell_scalars"/></div><div> </PCellData></div><div> <Piece Extent="0 320 0 320 0 1" Source="slab_0.vti"/></div>
<div> <Piece Extent="0 320 320 640 0 1" Source="slab_1.vti"/></div><div> <Piece Extent="320 640 0 320 0 1" Source="slab_2.vti"/></div><div> <Piece Extent="320 640 320 640 0 1" Source="slab_3.vti"/></div>
<div> </PImagData></div><div></VTKFile></div><div><br></div><div>slab_0.vti:</div><div><?xml_version="1.0"?></div><div><VTKFile type="ImageData" version="0.1" byte_order="LittleEndian"></div>
<div> <ImageData WholeExtent="0 640 0 640 0 1" Origin="0 0 0" Spacing="1 1 1"></div><div> <Piece Extent="0 320 0 320 0 1"></div><div> <CellData Scalars="cell_scalars"></div>
<div> <DataArray type="Float64" Name="cell_scalars" format="ascii"></div><div>...data is here...</div><div> </DataArray></div><div> </CellData></div><div> </Piece></div>
<div> </ImageData></div><div></VTKFile></div><div><br></div><div><div>slab_1.vti:</div><div><?xml_version="1.0"?></div><div><VTKFile type="ImageData" version="0.1" byte_order="LittleEndian"></div>
<div> <ImageData WholeExtent="0 640 0 640 0 1" Origin="0 0 0" Spacing="1 1 1"></div><div> <Piece Extent="0 320 320 640 0 1"></div><div> <CellData Scalars="cell_scalars"></div>
<div> <DataArray type="Float64" Name="cell_scalars" format="ascii"></div><div>...data is here...</div><div> </DataArray></div><div> </CellData></div><div> </Piece></div>
<div> </ImageData></div><div></VTKFile></div></div><div><br></div><div><div>slab_2.vti:</div><div><?xml_version="1.0"?></div><div><VTKFile type="ImageData" version="0.1" byte_order="LittleEndian"></div>
<div> <ImageData WholeExtent="0 640 0 640 0 1" Origin="0 0 0" Spacing="1 1 1"></div><div> <Piece Extent="320 640 0 320 0 1"></div><div> <CellData Scalars="cell_scalars"></div>
<div> <DataArray type="Float64" Name="cell_scalars" format="ascii"></div><div>...data is here...</div><div> </DataArray></div><div> </CellData></div><div> </Piece></div>
<div> </ImageData></div><div></VTKFile></div></div><div><br></div><div><div>slab_3.vti:</div><div><?xml_version="1.0"?></div><div><VTKFile type="ImageData" version="0.1" byte_order="LittleEndian"></div>
<div> <ImageData WholeExtent="0 640 0 640 0 1" Origin="0 0 0" Spacing="1 1 1"></div><div> <Piece Extent="320 640 320 640 0 1"></div><div> <CellData Scalars="cell_scalars"></div>
<div> <DataArray type="Float64" Name="cell_scalars" format="ascii"></div><div>...data is here...</div><div> </DataArray></div><div> </CellData></div><div> </Piece></div>
<div> </ImageData></div><div></VTKFile></div></div><div><br></div><div>Thanks again,<br><font color="#888888">Jack</font></div><div><div></div><div class="h5"><div><br><div class="gmail_quote">On Fri, Feb 11, 2011 at 9:28 AM, Jack Poulson <span dir="ltr"><<a href="mailto:jack.poulson@gmail.com" target="_blank">jack.poulson@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have been scouring the web and the VTK documentation for an example of an XML vtkImageData file (and preferably a .pvti/.vti pairing), but I cannot seem to find one.<div>
<br></div><div>I know that you guys heavily recommend using vtkXMLPImageDataWriter, but I have a parallel code that I would like to dump out .pvti and .vti files from without requiring the user to link to VTK. </div>
<div><br></div><div>Does anyone know where I can read a precise specification or find an example file? Even a trivial ascii/binary/appended data version would suffice. </div><div><br>Thank you in advance,</div><div>Jack</div>
</blockquote></div><br></div>
</div></div></blockquote></div><br></div>