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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Daniel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">As you have discovered, trying to “connect” data sets in this way after the clip filter is applied is problematic because it changes the locations of points and the structure of cells.
It makes the grids no longer isomorphic or sub-isomorphic.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">I would suggest one of two approaches. The first approach would be to combine all the data arrays into one data set before doing any of the extractions, thresholds, or clips. If all your
arrays are on data sets with the exact same grid structure, then you can use the append attributes filter to combine the arrays of all these data sets into a single data set. Then the arrays will simply be available from the output of the clip.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">If that approach will not work for some reason, a second approach is to use the resample with dataset filter. You can use this to sample the other data sets onto the clipped data set, which
I think in the end gives you the effect you are looking for.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">-Ken<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-family:Calibri;color:black">From:
</span></b><span style="font-family:Calibri;color:black">ParaView <paraview-bounces@paraview.org> on behalf of Daniel Frisch <daniel.frisch.kit@gmail.com><br>
<b>Date: </b>Tuesday, January 31, 2017 at 1:20 AM<br>
<b>To: </b>"paraview@paraview.org" <paraview@paraview.org><br>
<b>Subject: </b>[EXTERNAL] [Paraview] Generate IDs<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">Hello, I want to </span>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span class="gmail-im"><span style="font-size:9.5pt"><o:p> </o:p></span></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">- open an unstructured grid, </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">- view a sub-volume using the Threshold filter that selects a certain material <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">- apply some Clip filters to remove unwanted parts<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">- select everything I am seeing now<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">- and create an "Extract Selection" filter that can be used for other vtk files containing the same unstructured grid but other data arrays. <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">But the "GenerateIDs" filter removes the material array from the dataset so I can't apply the Threshold filter anymore. I see the "Extract Selection" works only with the current IDs
anyway that are different from the original cell IDs due to the Clip filters. <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">How can I have a filter that extracts a certain set of cells that I define and apply it to other .vtk files?<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt"><img width="1" height="1" id="_x0000_i1025" src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">Thank you very much in advance, <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt">Daniel <o:p></o:p></span></p>
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