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Leo,<br>
<br>
Here is the *.tex file.<br>
<br>
Sorry for the trouble with the *.pdf file. For whatever reason, my
"tool chain" here (WinXP-64; <span class="moz-smiley-s1"><span> :-)
</span></span> => emacs-21.2 => *.tex => latex =>
*.dvi => dvips => *.ps => GSview+ImageMagick-6.3.3-Q16
=> *.pdf => Adobe Reader-10.1.3) works OK.<br>
<br>
Sam<br>
<br>
On 6/10/2012 8:45 PM, Yuanxin Liu wrote:
<blockquote
cite="mid:CAH+HHJ-AZYPkZPo-9NL8X8d-D-zYPYYDFNTJgd3U8OJMY_nnRw@mail.gmail.com"
type="cite">Hi, Sam,
<div> 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.</div>
<div>thanks,</div>
<div>Leo</div>
<div><br>
<div class="gmail_quote">On Sun, Jun 10, 2012 at 8:49 PM, Samuel
Key <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:samuelkey@bresnan.net" target="_blank">samuelkey@bresnan.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Leo,<br>
<br>
Here is the *.pdf file again.<br>
<br>
Sam
<div>
<div class="h5"><br>
<br>
On 6/10/2012 6:36 PM, Yuanxin Liu wrote: </div>
</div>
<blockquote type="cite">
<div>
<div class="h5">Hi, Sam,
<div> Would you mind reposting this? The pdf file
seems corrupt.</div>
<div>thanks,</div>
</div>
</div>
<div>Leo<br>
<br>
<div class="gmail_quote">
<div>
<div class="h5">On Sun, Jun 10, 2012 at 7:38 PM,
Samuel Key <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:samuelkey@bresnan.net"
target="_blank">samuelkey@bresnan.net</a>></span>
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>
<div class="h5"> Hi Leo,<br>
<br>
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.<br>
<br>
If it helps, please free to incorporate it
into ParaView.<br>
<br>
Sam Key. </div>
</div>
<div>
<div>
<div>
<div class="h5"><br>
<br>
<br>
<br>
On 6/10/2012 12:55 PM, Yuanxin Liu
wrote: </div>
</div>
<blockquote type="cite">
<div>
<div class="h5">Hi, <br>
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.
<div> <br>
</div>
<div>Leo</div>
<div><br>
</div>
<br>
</div>
</div>
<div class="gmail_quote">
<div>
<div class="h5">On Sat, Jun 9, 2012 at
8:57 AM, Magician <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:f_magician@mac.com"
target="_blank">f_magician@mac.com</a>></span>
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div>
<div class="h5">Hi all,<br>
<br>
<br>
Now I found a bug of the filter.<br>
<br>
My ParaView's version is 3.14.1.<br>
I define node names as below:<br>
> c--d<br>
> | |<br>
> a--b<br>
<br>
Case 1: a=1.0, b=0.0, c=0.0, d=0.0<br>
Integration Value = 0.33333<br>
<br>
Case 2: a=0.0, b=1.0, c=0.0, d=0.0<br>
Integration Value = 0.16666<br>
<br>
</div>
</div>
( Case 3: a=0.0, b=0.0, c=1.0, d=0.0
<div class="im"><br>
Integration Value = 0.16666<br>
<br>
Case 4: a=0.0, b=0.0, c=0.0, d=1.0<br>
Integration Value = 0.33333<br>
<br>
So Integration Values are calculated
as (2*a+b+c+2*d)/6.<br>
I think it's not a good result.<br>
</div>
<span><font color="#888888">,br> <br>
Magician<br>
</font></span>
<div>
<div>
<div class="im"><br>
<br>
On(2012/06/08, at 12:54,
Magician wrote:<br>
<br>
> Hi all,<br>
><br>
><br>
</div>
> I'm now comparing integjation
results of each postprocessors.
<div class="im"><br>
> I made a simple Quadratic
VTK model as below:<br>
>> # vtk DataFile Version
2.0<br>
</div>
( >
<div>
<div class="h5"><br>
>> QuadCell<br>
>> ASCII<br>
>> DATASET
UNSTRUCTURED_GRID<br>
>> POINTS 4 FLOAT<br>
>> 0 0 0<br>
>> 1 0 0<br>
>> 0 1 0<br>
>> 1 1 0<br>
>> CELLS 1 5<br>
>> 4 0 1 3 2<br>
>> CELL_TYPES 1<br>
>> 9<br>
>> POINT_DATA 4<br>
>> SCALARS scalar FLOAT
1<br>
>> LOOKUP_TABLE DEFAULT<br>
>> 0.0<br>
>> 1.0<br>
>> 2.0<br>
>> 4.0<br>
><br>
> When I apply Point Data
to Cell Data filter,<br>
> scalar values are
interpolated as 1.75.<br>
> It may be calculated as
(0.0+1.0+2.0+4.0)/4.0.<br>
><br>
> But when I apply
Integrate Variables filter,<br>
> scalar value is
integrated as 1.833....<br>
> The area value of
quadratic cell is 1.0, so I
thought<br>
> integrated values should
be equal to cell data.<br>
><br>
> How the integrated value
is calculated?<br>
><br>
><br>
> Magician<br>
<br>
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<div class="h5"> <br>
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