You can not contour cell centered values. Isocontouring finds the planes within each cell that lie on the chosen isovalues. With cell centered values, the nearest equivalent operation is threshold, which picks out the cells that have the chosen isovalues.<br>
<br>You can apply the cell to points filter to interpolate cell centered values onto the points, then the contour will have something to work with inside each cell.<br><br clear="all">David E DeMarle<br>Kitware, Inc.<br>
R&D Engineer<br>
28 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-371-3971 x109<br>
<br><br><div class="gmail_quote">On Fri, Mar 12, 2010 at 7:34 AM, Sebastian Gatzka <span dir="ltr"><<a href="mailto:sebastian.gatzka@stud.tu-darmstadt.de">sebastian.gatzka@stud.tu-darmstadt.de</a>></span> wrote:<br>
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<div bgcolor="#ffffff" text="#000000">
<font face="Helvetica, Arial, sans-serif" size="-1">It's<a href="http://en.wikipedia.org/wiki/Finite_volume_method" target="_blank">
finite-volume-calculation</a> scalar data, which is - as a matter of
fact - stored at the cell centers.</font><font face="Helvetica, Arial, sans-serif"><br>
<small>Maybe I have to interpolate to the points if contour filter
doesn't work on cell data?!</small></font><br></div></blockquote></div><br>