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It seems <font face="Source Code Pro">vtkSelectionNode::QUERY is
not implemented. If you look at the source code, there is no case
for it, so it defaults to error message and returns. Use an
alternative selection (e.g. by indices).<br>
Miro<br>
<br>
<br>
</font><br>
<div class="moz-cite-prefix">On 06/17/2014 01:53 AM, Christian Bauer
wrote:<br>
</div>
<blockquote
cite="mid:4E59A7C9-0DA7-4930-9635-0B92D19489E3@rwth-aachen.de"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
Hi all,
<div><br>
</div>
<div>I currently try to use the VTK C++ library, more precisely I
try to extract a selection by using a query string. </div>
<div>Sadly I receive this error message from within vtk:</div>
<div><br>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;">
<div>
<div><font face="Source Code Pro">ERROR: In
~/git/VTK/Filters/Extraction/vtkExtractSelection.cxx, line
365</font></div>
</div>
<div>
<div><font face="Source Code Pro">vtkExtractSelection
(0x7f8dd061ed30): Unrecognized CONTENT_TYPE: 9</font></div>
</div>
</blockquote>
<div>
<div><br>
</div>
<div>The following part of the code produces the error:</div>
<div><br>
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;">
<div>
<div>
<div><font face="Source Code Pro">selection_node->SetFieldType(vtkSelectionNode::CELL);
// select cells</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">selection_node->SetContentType(vtkSelectionNode::QUERY);
// use query string for selection</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">selection_node->SetQueryString("scalars[:,0]
== 1");</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">selection->AddNode(selection_node);</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">extract_selection->SetInputData(0,bounding_poly);
// a vtkPolyData object containing a triangulation</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">extract_selection->SetInputData(1,selection);</font></div>
</div>
</div>
<div>
<div>
<div><font face="Source Code Pro">extract_selection->Update();</font></div>
</div>
</div>
</blockquote>
<div>
<div><br>
</div>
<div>So my question is: How can I implement the selection by a
query string?</div>
<div><br>
</div>
<div>Best</div>
<div>Christian Bauer<br>
<div>
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
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<div style="color: rgb(0, 0, 0); letter-spacing: normal;
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text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px; word-wrap: break-word; -webkit-nbsp-mode: space;
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<div style="color: rgb(0, 0, 0); letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;">
<div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">--</span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">Christian Bauer</span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">Student</span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">Computational
Engineering Science, B. Sc.</span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">RWTH Aachen
University</span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">E-Mail:<span
class="Apple-converted-space"> </span><a
moz-do-not-send="true"
href="mailto:christian.bauer@rwth-aachen.de?subject="><span
style="letter-spacing: 0px;">christian.bauer@rwth-aachen.de</span></a></span></div>
<div style="margin: 0px; font-size: 10px; color:
rgb(127, 127, 127);"><span
style="letter-spacing: 0px;">OpenPGP: <a
moz-do-not-send="true"
href="http://keys.gnupg.net/pks/lookup?op=get&search=0x5AA452D5F31608DA"><span
style="letter-spacing: 0px;">http://keys.gnupg.net/pks/lookup?op=get&search=0x5AA452D5F31608DA</span></a></span></div>
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<br>
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