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<div class="moz-cite-prefix">Hi afad sfgsfdgsfd,<br>
<br>
Your example(quadratic tera) actually works with a very slight
modification: move the cell offset data to the top of the element.
That's clearly a bug in the reader(when reading inline data, the
regression tests only check that the appended mode works, so
that's why this bug slipped through.) . I attached the modified
file so you see exactly what I meant.<br>
<br>
Burlen<br>
<br>
On 03/29/2013 09:43 AM, Burlen Loring wrote:<br>
</div>
<blockquote cite="mid:5155C4C1.6050600@lbl.gov" type="cite">
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<div class="moz-cite-prefix">Hi afad sfgsfdgsfd,<br>
<br>
Fixes for bugs introduced by changes in VTK's xml file format
are in the pipeline, so you'll have to checkout the latest git
HEAD and build ParaView from source to get the bug fixes. If
that's something you're willing to do, here are first steps<br>
<br>
# get sources<br>
$ git clone --recursive git://www.paraview.org/ParaView.git<br>
# apply the patch<br>
# patch is attached and I just now submitted to PV, will show up
in PV after the next review.<br>
$ cd ParaView<br>
$ git am -3
0001-QuadraturePoints-any-integer-type-for-offsets.patch<br>
# build pv<br>
<br>
That will get you the bug fixes. Build it, use default build
opts is fine. <br>
<br>
Then if you like you can get the test data, and open the file
ParaViewData/Data/blow.vtk, construct the pipeline showed in the
post (<a moz-do-not-send="true"
href="http://markmail.org/message/6qz3ebszvny4vwxp#query:+page:1+mid:6qz3ebszvny4vwxp+state:results">http://markmail.org/message/6qz3ebszvny4vwxp#query:+page:1+mid:6qz3ebszvny4vwxp+state:results</a>).
That shows how it's supposed to work.<br>
<br>
$ git clone <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="http://www.paraview.org/ParaViewData.git">www.paraview.org/ParaViewData.git</a><br>
<br>
Now onto your data, the xml you gave is incorrect , it's missing
the offset array. let me see if I can get your example working,
I'll post a follow up, hopefully in a few minutes.<br>
<br>
Burlen<br>
<br>
<br>
On 03/28/2013 12:43 AM, afad sfgsfdgsfd wrote:<br>
</div>
<blockquote cite="mid:BAY166-W4822C32D5C7D7D75E0E2FDCAD20@phx.gbl"
type="cite">
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<div dir="ltr"> I am trying to understand quadrature in
paraview. I am running finite element simulations in which I
have displacements at the nodes of the element, and
stress/strain at the quadrature points. I have linear and
quadratic hexahedral or tetrahedral elements. I have been
spending days trying to figure out how to implement data on
the quadrature points. I have downloaded just about every
document I can find.
<div><br>
</div>
<div>First: I downloaded CylinderQuadratic.vtk as shown in
VTK-Quadrature-Point-Design-Doc. I was able to generate the
quadrature scheme dictioanary and generate quadrature
points. But, when I tried to use the Interpolate to
Quadrature Points filter I could not select QuadratureOffset
in the Select Source Array drop down menu. I was able to do
this when using the Generate Quadrature Points filter. </div>
<div><br>
</div>
<div>Second: Considering I couldn't figure out how to
interpolate quadrature points using CylinderQuadratic.vtk, I
decided to investigate just using a single element. I took
quadraticTetra01.vtu and modified it to only have on
quadratic tetrahedron. Then I used paraview to generate the
quadrature scheme dictionary. I saved this into a VTU file
in order to see how to implement the dictionary on my own.
When I tried to reopen this new VTU file, paraview was
unable to open the file. Specifically, it choked on the
QuadratureOffset data array.</div>
<div>This is the file that paraview cannot open</div>
<div><br>
</div>
<div>
<div><VTKFile type="UnstructuredGrid" version="0.1"
byte_order="LittleEndian"></div>
<div> <UnstructuredGrid></div>
<div> <Piece NumberOfPoints="10" NumberOfCells="1"></div>
<div> <PointData Scalars="scalars"></div>
<div> <DataArray type="Float32" Name="scalars"
format="ascii" RangeMin="0" RangeMax="1"></div>
<div> 1 1 1 1 0 0</div>
<div> 0 0 0 0</div>
<div> </DataArray></div>
<div> </PointData></div>
<div> <CellData></div>
<div> <DataArray type="Int64"
Name="QuadratureOffset" format="ascii" RangeMin="0"
RangeMax="0"></div>
<div> <InformationKey name="DICTIONARY"
location="vtkQuadratureSchemeDefinition"></div>
<div> <vtkQuadratureSchemeDefinition></div>
<div> <CellType value="24"></div>
<div> </div>
<div> </CellType></div>
<div> <NumberOfNodes value="10"></div>
<div> </div>
<div> </NumberOfNodes></div>
<div> <NumberOfQuadraturePoints value="4"></div>
<div> </div>
<div> </NumberOfQuadraturePoints></div>
<div> <ShapeFunctionWeights></div>
<div> 1.5625000000000000e-001
-9.3750000000000000e-002 -9.3750000000000000e-002
-9.3750000000000000e-002</div>
<div> 3.1250000000000000e-001
6.2500000000000000e-002 3.1250000000000000e-001
3.1250000000000000e-001</div>
<div> 6.2500000000000000e-002
6.2500000000000000e-002 -9.3750000000000000e-002
7.0312500000000000e-002</div>
<div> -1.1718750000000000e-001
-9.3750000000000000e-002 2.8125000000000000e-001
4.2187500000000000e-001</div>
<div> 9.3750000000000000e-002
6.2500000000000000e-002 2.8125000000000000e-001
9.3750000000000000e-002</div>
<div> -9.3750000000000000e-002
-1.1718750000000000e-001 7.0312500000000000e-002
-9.3750000000000000e-002</div>
<div> 9.3750000000000000e-002
4.2187500000000000e-001 2.8125000000000000e-001
6.2500000000000000e-002</div>
<div> 9.3750000000000000e-002
2.8125000000000000e-001 -9.3750000000000000e-002
-5.4687500000000000e-002</div>
<div> -5.4687500000000000e-002
3.7500000000000000e-001 3.1250000000000000e-002
1.5625000000000000e-002</div>
<div> 3.1250000000000000e-002
3.7500000000000000e-001 1.8750000000000000e-001
1.8750000000000000e-001</div>
<div> </ShapeFunctionWeights></div>
<div> <QuadratureWeights></div>
<div> 2.1219962781139991e-314
2.1219957914593380e-314 1.1013158155129526e-311
1.1501217187461613e-311</div>
<div> </QuadratureWeights></div>
<div> </div>
<div> </vtkQuadratureSchemeDefinition></div>
<div> </div>
<div> </InformationKey></div>
<div> 0</div>
<div> </DataArray></div>
<div> </CellData></div>
<div> <Points></div>
<div> <DataArray type="Float32" Name="Points"
NumberOfComponents="3" format="ascii" RangeMin="0"
RangeMax="1.1874342107"></div>
<div> 0 0 0 1 0 0</div>
<div> 0.5 0.80000001192 0 0.5 0.40000000596 1</div>
<div> 0.5 0 -0.20000000298 0.60000002384
0.60000002384 0</div>
<div> 0.30000001192 0.40000000596 0 0.40000000596
0.20000000298 0.5</div>
<div> 0.85000002384 0.30000001192 0.5 0.5
0.60000002384 0.44999998808</div>
<div> </DataArray></div>
<div> </Points></div>
<div> <Cells></div>
<div> <DataArray type="Int64" Name="connectivity"
format="ascii" RangeMin="0" RangeMax="9"></div>
<div> 0 1 2 3 4 5</div>
<div> 6 7 8 9</div>
<div> </DataArray></div>
<div> <DataArray type="Int64" Name="offsets"
format="ascii" RangeMin="10" RangeMax="10"></div>
<div> 10</div>
<div> </DataArray></div>
<div> <DataArray type="UInt8" Name="types"
format="ascii" RangeMin="24" RangeMax="24"></div>
<div> 24</div>
<div> </DataArray></div>
<div> </Cells></div>
<div> </Piece></div>
<div> </UnstructuredGrid></div>
<div></VTKFile></div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Third: I investigated quadrature for hexahedron. I made
a similar file to quadraticTetra01.vtu and tried to generate
a quadrature dictionary. Upon hitting apply for this,
paraview crashes. It crashes for both linear and quadratic
hexahedron. This is the file it crashes on,</div>
<div><br>
</div>
<div>
<div><?xml version="1.0"?></div>
<div><VTKFile type="UnstructuredGrid" version="0.1"
byte_order="LittleEndian"
compressor="vtkZLibDataCompressor"></div>
<div> <UnstructuredGrid></div>
<div> <Piece NumberOfPoints="12" NumberOfCells="2"></div>
<div> <PointData Scalars="scalars"></div>
<div> <DataArray type="Float32" Name="scalars"
format="ascii"></div>
<div> 1 1 1 1 0 0 0 0 0 0 1 1</div>
<div> </DataArray></div>
<div> </PointData></div>
<div><span class="ecxApple-tab-span" style="white-space:pre">
</span> </div>
<div> <Points></div>
<div> <DataArray type="Float32"
NumberOfComponents="3" format="ascii"></div>
<div> -1.0 -1.0 1.0</div>
<div> -1.0 -1.0 -1.0</div>
<div> -1.0 1.0 -1.0</div>
<div> -1.0 1.0 1.0</div>
<div> 1.0 -1.0 1.0</div>
<div> 1.0 -1.0 -1.0</div>
<div> 1.0 1.0 -1.0</div>
<div> 1.0 1.0 1.0</div>
<div><span class="ecxApple-tab-span" style="white-space:pre">
</span> 3.0 -1.0 1.0</div>
<div> 3.0 -1.0 -1.0</div>
<div> 3.0 1.0 -1.0</div>
<div> 3.0 1.0 1.0</div>
<div> </DataArray></div>
<div> </Points></div>
<div> <Cells></div>
<div> <DataArray type="Int32" Name="connectivity"
format="ascii"></div>
<div> 0 1 2 3 4 5 6 7</div>
<div><span class="ecxApple-tab-span" style="white-space:pre">
</span> 4 5 6 7 8 9 10 11</div>
<div> </DataArray></div>
<div><span class="ecxApple-tab-span" style="white-space:pre">
</span><DataArray type="Int32" Name="offsets"
format="ascii"></div>
<div> 8 16</div>
<div> </DataArray></div>
<div> <DataArray type="UInt8" Name="types"
format="ascii"></div>
<div> 12 12</div>
<div> </DataArray></div>
<div> </Cells></div>
<div> </Piece></div>
<div> </UnstructuredGrid></div>
<div></VTKFile></div>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>My question is can anyone give me a quick example to
implement quadrature in paraview. I am at wits end trying
to figure this out. </div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
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