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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'><a href="http://www.vtk.org/doc/nightly/html/classvtkMaskPoints.html">http://www.vtk.org/doc/nightly/html/classvtkMaskPoints.html</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>selectively filter points<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>vtkMaskPoints is a filter that passes through points and point attributes from input dataset. (Other geometry is not passed through.) It is possible to mask every nth point, and to specify an initial offset to begin masking from. It is possible to also generate different random selections (jittered strides, real random samples, and spatially stratified random samples) from the input data. The filter can also generate vertices (topological primitives) as well as points. This is useful because vertices are rendered while points are not.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>On Behalf Of </b>Bryn Lloyd<br><b>Sent:</b> Tuesday, November 22, 2011 9:29 AM<br><b>To:</b> vtkusers@vtk.org<br><b>Subject:</b> [vtkusers] How to sample points from data set, for visualizing glyphs?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I would like to plot vectors (or other glyphs) of a simulation result. Typically the result will be a vtkRectilinearGrid with vector valued arrays, but could also be any other type of vtkDataSet.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If I plot one glyph per point the visualization will be crowded and not interactive. In paraview only a subset of points are used. Is there any class, which obtains this subset?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal>Bryn<o:p></o:p></p></div></div></body></html>