<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Calibri">The vtk's example "probeComb.tcl"(</font></span><tt><span lang="EN-US" style="FONT-SIZE: 12pt"><font face="ËÎÌå">/Examples/VisualizationAlgorithms/Tcl/probeComb.tcl </font></span></tt><span lang="EN-US"><font face="Calibri">) works well if the plane used to probe the source is contained all in the source. Yet, there is a <b style="mso-bidi-font-weight: normal">strange phenomenon when we enlarge the plane to make part of it out of the border of the source -- there are some "additional" contour lines</b>, which we do not need, near the intersection of the plane and boundary of the source.</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Calibri"> </font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Calibri">I enlarge the plane by replacing the 23th line of "probeComb.tcl" with "transP1 Scale 12 12 12 ".</font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Calibri"> </font></span></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Calibri">The same phenomenon doesn't appear in the <b style="mso-bidi-font-weight: normal">paraview</b> examples. Why? How to remove the additional contour lines even if the plane has a intersection with the boundary of the probing-source?</font></span></p>