[vtkusers] Fwd: Re: Glyph coloring by vector magnitud

[Rakesh Patil]

 It should set the colors.. Tell me what type of grid are you using..?? And what is the vector array that you are setting to this Grid?? Original message From:Sebastian Gatzka< sebastian.gatzka at stud.tudarmstadt.de >Date: 26 Feb 10 15:23:25Subject:[vtkusers] Fwd: Re:Glyph coloring by vector magnitudTo: vtkusers at vtk.orgUnfortunately this does not work for me. Despite turning off the data scaling I can scale the glyphs from their magnitude, but not color them by their magnitude.vtkArrowSource *arrow = vtkArrowSource::New();vtkGlyph3D *glyph = vtkGlyph3D::New(); glyph>SetInput(gridCellCenters>GetOutput()); glyph>SetSourceConnection(arrow>GetOutputPort()); glyph>SetScaleMode(VTKSCALEBYVECTOR); glyph>SetColorMode(VTKCOLORBYVECTOR); glyph>SetScaleFactor(0.1);This code generates scaled but uniform colored vectors. Am 22.02.2010 16:33, schrieb Rakesh Patil:Its because you have turned of the scaling mode. When you say, SetScaleModeToDataScalingOff(), all glyphs are rendered of equal le
 ngth.In the next step, you are saying,SetColorModeToColorByScale();you'll see that all the glyphs are of same scale. Thus, all glyphs are rendered with same color. I think, Once you comment or remove SetScaleModeToDataScalingOff()then, it should work fine..Seniors please correct me if i'm wrong..Good luckRegards Rakesh Patil  Original message  From:Sebastian Gatzka< sebastian.gatzka at stud.tudarmstadt.de > Date: 22 Feb 10 19:37:52 Subject: [vtkusers] Glyph coloring by vector magnitud To: vtkusers at vtk.orgHello World.Meanwhile I made some nice glyphs, but am stuck with the coloring. I switched on SetColorModeToColorByVector() which may be the coloring by vector magnitude?vtkGlyph3D *glyph vtkGlyph3D::New(); glyph>SetInput(gridCellCenters>GetOutput());glyph>SetSourceConnection(arrow>GetOutputPort()); glyph>SetScaleModeToDataScalingOff(); glyph>SetColorModeToColorByScale(); glyph>SetScaleFactor(0.3);Unfortunately all glyphs are colored the same (blue). Do I have to do anything fur
 ther to get propper coloring? Maybe with the mapper?See you. Sebastian 
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