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Thu May 27 11:52:52 EDT 2010

are invalid. The invalid points are found mostly where the resolution of
the unstructured grid changes.

Is there a way to reduce the number of invalid points? And is it correct
to apply the ResampleWithDataset filter on Unstructured Grid, or should I
have converted them to something else first?

Thanks in advance for your help!

Camilla

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   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
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--_000_C888251218D14kmorelsandiagov_
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<TITLE>Re: [Paraview] Resampling an Unstructured Grid</TITLE>
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<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:=
11pt'>It was not clear in your email, but I am assuming that the points mar=
ked invalid are actually inside a cell in the unstructured mesh and should =
not have been marked so. &nbsp;You also stated that they happen near where =
the resolution of the unstructured grid changes. &nbsp;That can mean multip=
le things, but I am assuming that you are referring to a discontinuity in t=
he grid where coarse cells share a face with multiple finer cells. &nbsp;If=
 this is the case, then VTK is going to have problems because many of its a=
lgorithms, including finding the cell in which a point belongs, relies on b=
eing able to find a cell&#8217;s neighbors, and this is ill defined when yo=
u have a discontinuity.<BR>
<BR>
-Ken<BR>
<BR>
<BR>
On 8/10/10 6:30 PM, &quot;<a href=3D"ccattani at caltech.edu">ccattani at caltech=
.edu</a>&quot; &lt;<a href=3D"ccattani at caltech.edu">ccattani at caltech.edu</a=
>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"=
><SPAN STYLE=3D'font-size:11pt'>Dear all,<BR>
<BR>
I am using the ResampleWithDataset filter to interpolate values from an<BR>
unstructured grid to a grid of equally spaced points.<BR>