You're getting that error because more likely than not, your threshold range is such that no data is getting passed through. Ensure that the the Threshold1.ThresholdRange is set to a valid range so that at least some cells are passed through.
Utaksrh On Mon, Aug 29, 2011 at 8:27 PM, Jesus Pulido <[email protected]> wrote: > I omitted that line before because I was getting the following error. > Readding it gives this error: > Traceback (most recent call last): > File "/home/user/DNS/volume.py", line 40, in <module> > DataRepresentation2.ColorArrayName = 'volume_scalars' > File > "/home/user/Programs/ParaView-3.11.1-git/bin/Utilities/VTKPythonWrapping/site-packages/paraview/servermanager.py", > line 212, in __setattr__ > setter(self, value) > File > "/home/user/Programs/ParaView-3.11.1-git/bin/Utilities/VTKPythonWrapping/site-packages/paraview/servermanager.py", > line 2267, in setProperty > return self.SetPropertyWithName(propName, value) > File > "/home/user/Programs/ParaView-3.11.1-git/bin/Utilities/VTKPythonWrapping/site-packages/paraview/servermanager.py", > line 267, in SetPropertyWithName > prop.SetData(arg) > File > "/home/user/Programs/ParaView-3.11.1-git/bin/Utilities/VTKPythonWrapping/site-packages/paraview/servermanager.py", > line 695, in SetData > raise ValueError("Could not locate array %s in the input." % arr) > ValueError: Could not locate array volume_scalars in the input. > > Jesus > > On Mon, Aug 29, 2011 at 3:53 PM, Utkarsh Ayachit > <[email protected]> wrote: >> >> Try adding: >> >> DataRepresentation2.ColorArrayName = 'volume_scalars' >> >> Utkarsh >> >> On Wed, Aug 24, 2011 at 7:02 PM, Jesus Pulido <[email protected]> wrote: >> > I am trying to volume render an unstructured grid of points using >> > pvbatch >> > but I am getting an error: >> > >> > ERROR: In >> > >> > /home/user/Programs/ParaView-3.11.1-git/ParaView/VTK/VolumeRendering/vtkUnstructuredGridVolumeRayCastMapper.cxx, >> > line 211 >> > vtkUnstructuredGridVolumeRayCastMapper (0x2473a40): Can't use the ray >> > cast >> > mapper without scalars! >> > >> > When trying to use Bunyk Ray casting >> > >> > and >> > >> > ERROR: In >> > >> > /home/user/Programs/ParaView-3.11.1-git/ParaView/VTK/VolumeRendering/vtkOpenGLProjectedTetrahedraMapper.cxx, >> > line 237 >> > vtkOpenGLProjectedTetrahedraMapper (0x2ab3190): Can't use projected >> > tetrahedra without scalars! >> > >> > When trying to use Projected tetra. >> > >> > I am using the "latest" git version as of today. I also tried with >> > PV3.10.1 >> > 64bit linux binary and I am having the same error with pvbatch. >> > >> > >> > Here is the script that I am using in pvbatch. I generated this script >> > with >> > the help from using python trace within paraview (where the rendering >> > works). I think it tries to reference the data under >> > >> > Threshold1.Scalars = ['POINTS', 'volume_scalars'] >> > >> > but even if I comment this line out of my script I obtain the same error >> > as >> > above so somehow it's not able to reference the scalar points. >> > -------- >> > try: paraview.simple >> > except: from paraview.simple import * >> > paraview.simple._DisableFirstRenderCameraReset() >> > >> > wavelet_ = XMLImageDataReader( FileName=['/home/wavelet.vti'] ) >> > >> > wavelet_.CellArrayStatus = [] >> > wavelet_.PointArrayStatus = ['volume_scalars'] >> > >> > RenderView4 = GetRenderView() >> > RenderView4.CameraViewUp = [0.0, 0.0, 1.0] >> > RenderView4.CameraPosition = [-725.7466298125642, 127.5, 127.5] >> > RenderView4.CameraFocalPoint = [127.5, 127.5, 127.5] >> > RenderView4.CameraClippingRange = [590.9891635144385, >> > 1185.4328292597527] >> > RenderView4.Background = [0.0, 0.0, 0.0] >> > RenderView4.CenterAxesVisibility = 0 >> > RenderView4.OrientationAxesVisibility = 0 >> > RenderView4.ViewSize = [800, 600] >> > >> > SetActiveSource(wavelet_) >> > Threshold1 = Threshold() >> > >> > a1_volume_scalars_PVLookupTable = GetLookupTableForArray( >> > "volume_scalars", >> > 1, RGBPoints=[1.9, 0.0, 1.0, 0.0, 1.95, 1.4972662149337713e-07, 1.0, >> > 0.0014876325368879406, 2.0, 0.0, 0.996078431372549, 0.0, 2.05, >> > 1.6337586200641548e-07, 1.0, 0.0015525676008689975, 2.1, >> > 1.2838779441233928e-07, 1.0, 0.0013859544585118407] ) >> > a1_volume_scalars_PiecewiseFunction = CreatePiecewiseFunction() >> > a1_volume_scalars_PiecewiseFunction.Points = [1.9, 0.1, 1.95, 0.5, 2.0, >> > 1.0, >> > 2.05, 0.5, 2.1, 0.1] >> > >> > Threshold1 = GetActiveSource() >> > Threshold1.Scalars = ['POINTS', 'volume_scalars'] >> > Threshold1.ThresholdRange = [1.9, 2.1] >> > >> > DataRepresentation2 = Show() >> > DataRepresentation2 = GetDisplayProperties(Threshold1) >> > DataRepresentation2.EdgeColor = [0.0, 0.0, 0.5000076295109483] >> > DataRepresentation2.SelectMapper = 'Fixed point' >> > DataRepresentation2.ScalarOpacityFunction = >> > a1_volume_scalars_PiecewiseFunction >> > DataRepresentation2.ScalarOpacityUnitDistance = 7.74209043877865 >> > DataRepresentation2.LookupTable = a1_volume_scalars_PVLookupTable >> > DataRepresentation2.Representation = 'Volume' >> > DataRepresentation2.SelectMapper = 'Bunyk ray cast' >> > >> > Render() >> > >> > ----- >> > >> > >> > Jesus >> > >> > _______________________________________________ >> > Powered by www.kitware.com >> > >> > Visit other Kitware open-source projects at >> > http://www.kitware.com/opensource/opensource.html >> > >> > Please keep messages on-topic and check the ParaView Wiki at: >> > http://paraview.org/Wiki/ParaView >> > >> > Follow this link to subscribe/unsubscribe: >> > http://www.paraview.org/mailman/listinfo/paraview >> > >> > > > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
