Hi, Sam, I am still having trouble with the file. I tried to open it with several programs on windows and linux platforms and could not open it. If you have a .tex file, maybe you can try to post that instead. thanks, Leo
On Sun, Jun 10, 2012 at 8:49 PM, Samuel Key <[email protected]> wrote: > Leo, > > Here is the *.pdf file again. > > Sam > > > On 6/10/2012 6:36 PM, Yuanxin Liu wrote: > > Hi, Sam, > Would you mind reposting this? The pdf file seems corrupt. > thanks, > Leo > > On Sun, Jun 10, 2012 at 7:38 PM, Samuel Key <[email protected]> wrote: > >> Hi Leo, >> >> Though likely more arithmetically intense than you would like, I have >> attached a 3-page write-up on how to do an exact integration over the >> surface of a bi-linear isoparametric coordinate based quadrilateral in >> three-space. It is easily adapted to a flux integration as well. >> >> If it helps, please free to incorporate it into ParaView. >> >> Sam Key. >> >> >> >> >> On 6/10/2012 12:55 PM, Yuanxin Liu wrote: >> >> Hi, >> This is not really a bug, but just what the linear precision >> integration does. As you can see in vtkIntegrateAttributes.cxx:215, the >> quad cell is basically cut into two triangles along a diagonal, integration >> is done for each triangle and the results are added up. So, depending >> where your "1" falls on a diagonal vertex, you will get different results. >> >> Leo >> >> >> On Sat, Jun 9, 2012 at 8:57 AM, Magician <[email protected]> wrote: >> >>> Hi all, >>> >>> >>> Now I found a bug of the filter. >>> >>> My ParaView's version is 3.14.1. >>> I define node names as below: >>> > c--d >>> > | | >>> > a--b >>> >>> Case 1: a=1.0, b=0.0, c=0.0, d=0.0 >>> Integration Value = 0.33333 >>> >>> Case 2: a=0.0, b=1.0, c=0.0, d=0.0 >>> Integration Value = 0.16666 >>> >>> ( Case 3: a=0.0, b=0.0, c=1.0, d=0.0 >>> >>> Integration Value = 0.16666 >>> >>> Case 4: a=0.0, b=0.0, c=0.0, d=1.0 >>> Integration Value = 0.33333 >>> >>> So Integration Values are calculated as (2*a+b+c+2*d)/6. >>> I think it's not a good result. >>> ,br> >>> Magician >>> >>> >>> On(2012/06/08, at 12:54, Magician wrote: >>> >>> > Hi all, >>> > >>> > >>> > I'm now comparing integjation results of each postprocessors. >>> >>> > I made a simple Quadratic VTK model as below: >>> >> # vtk DataFile Version 2.0 >>> ( > >>> >>> >> QuadCell >>> >> ASCII >>> >> DATASET UNSTRUCTURED_GRID >>> >> POINTS 4 FLOAT >>> >> 0 0 0 >>> >> 1 0 0 >>> >> 0 1 0 >>> >> 1 1 0 >>> >> CELLS 1 5 >>> >> 4 0 1 3 2 >>> >> CELL_TYPES 1 >>> >> 9 >>> >> POINT_DATA 4 >>> >> SCALARS scalar FLOAT 1 >>> >> LOOKUP_TABLE DEFAULT >>> >> 0.0 >>> >> 1.0 >>> >> 2.0 >>> >> 4.0 >>> > >>> > When I apply Point Data to Cell Data filter, >>> > scalar values are interpolated as 1.75. >>> > It may be calculated as (0.0+1.0+2.0+4.0)/4.0. >>> > >>> > But when I apply Integrate Variables filter, >>> > scalar value is integrated as 1.833.... >>> > The area value of quadratic cell is 1.0, so I thought >>> > integrated values should be equal to cell data. >>> > >>> > How the integrated value is calculated? >>> > >>> > >>> > Magician >>> >>> _______________________________________________ >>> Powered by www.kitware.com >>> >>> Visit other Kitware open-source projects at >>> http://www.kitware.com/opensource/opensource.html >>> >>> Please keep messages on-topic and check the ParaView Wiki at: >>> http://paraview.org/Wiki/ParaView >>> >>> Follow this link to subscribe/unsubscribe: >>> http://www.paraview.org/mailman/listinfo/paraview >>> >> >> >> >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the ParaView Wiki at: >> http://paraview.org/Wiki/ParaView >> >> Follow this link to >> subscribe/unsubscribe:http://www.paraview.org/mailman/listinfo/paraview >> >> >
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