Hi, So the reason why my required filters are greyed out after loading this CAS data set is due to a few lines in the XML file. The streamtracer is an example:
<DataTypeDomain name="input_type" composite_data_supported="1"> <DataType value="vtkDataSet"/> </DataTypeDomain> <InputArrayDomain name="input_array" attribute_type="point" number_of_components="3"/> Now I did introduce a "vtkStructuredGrid" into the pipeline, which inherits from vtkDtaSet, so that shouldn't be a problem with the "DataType" portion above. But what concerns me the "InputArrayDomain" requirement. By default the data set loads in a bunch of 1-component arrays. I thought that by creating the 3-component UVW array (see below), I wouldn't face any issues. But for some reason I still do -- maybe that requirement is unfulfilled? If anyone has any ideas, please let me know. Sohail --- On Wed, 3/2/11, Sohail Shafii <sohailsha...@yahoo.com> wrote: From: Sohail Shafii <sohailsha...@yahoo.com> Subject: Re: [Paraview] Using streamtracer/gradient filters on "multi-block" data set To: "Berk Geveci" <berk.gev...@kitware.com> Cc: paraview@paraview.org Date: Wednesday, March 2, 2011, 1:46 PM Not sure what you mean by that last statement -- do you mean transfer an array to pointdata? I tried to do this: input = self.GetInput() output = self.GetOuput() output = vtk.vtkStructuredGrid() output.ShallowCopy(input.GetBlock(0)) // create UVW array (3-component velocity array) output.GetPointData().AddArray(UVWArray) When I print output, I do see the added array in the point data section with the correct component and tuple count. However, the bounds of the grid are suspect (like -0.1 to 0.3 for x; -0.1 to 2.6e-18 for y) and the grid extent is 0, -1, 0, -1, 0, -1. I also tried: #yiv1702808980 p, #yiv1702808980 li {white-space:pre-wrap;}output.GetPointData().SetVectors(UVWArray) Didn't work either. Something is still not right here... Sohail --- On Wed, 3/2/11, Berk Geveci <berk.gev...@kitware.com> wrote: From: Berk Geveci <berk.gev...@kitware.com> Subject: Re: [Paraview] Using streamtracer/gradient filters on "multi-block" data set To: "Sohail Shafii" <sohailsha...@yahoo.com> Cc: paraview@paraview.org Date: Wednesday, March 2, 2011, 3:40 AM I looks like you to apply cell data to point data. On Tue, Mar 1, 2011 at 9:06 PM, Sohail Shafii <sohailsha...@yahoo.com> wrote: Hi, Let me correct myself; the block contained inside is a vtkStructuredGrid. I did a printout what is in the pipeline (self.GetInput()): vtkMultiBlockDataSet (0x3a7c1d0) Debug: Off Modified Time: 164250 Reference Count: 2 Registered Events: (none) Source: (none) Information: 0x3a7c230 Data Released: False Global Release Data: Off UpdateTime: 164282 Release Data: Off UpdateExtent: Initialized Update Number Of Pieces: 1 Update Piece: 0 Update Ghost Level: 0 MaximumNumberOfPieces: -1 ExtentTranslator: (0x3a7df30) RequestExactExtent: Off Field Data: Debug: Off Modified Time: 155460 Reference Count: 1 Registered Events: (none) Number Of Arrays: 0 Number Of Components: 0 Number Of Tuples: 0 Number Of Children: 1 Child 0: vtkUnstructuredGrid Debug: Off Modified Time: 164208 Reference Count: 3 Registered Events: (none) Source: (none) Information: 0x4920790 Data Released: False Global Release Data: Off UpdateTime: 0 Release Data: Off UpdateExtent: Not Initialized MaximumNumberOfPieces: 1 RequestExactExtent: Off Field Data: Debug: Off Modified Time: 164167 Reference Count: 1 Registered Events: (none) Number Of Arrays: 0 Number Of Components: 0 Number Of Tuples: 0 Number Of Points: 34943 Number Of Cells: 31488 Cell Data: Debug: Off Modified Time: 164206 Reference Count: 1 Registered Events: (none) Number Of Arrays: 24 Array 0 name = PRESSURE Array 1 name = X_VELOCITY Array 2 name = X_VELOCITY_M1 Array 3 name = X_VELOCITY_M2 Array 4 name = Y_VELOCITY Array 5 name = Y_VELOCITY_M1 Array 6 name = Y_VELOCITY_M2 Array 7 name = Z_VELOCITY Array 8 name = Z_VELOCITY_M1 Array 9 name = Z_VELOCITY_M2 Array 10 name = TEMPERATURE Array 11 name = ENTHALPY Array 12 name = ENERGY_M1 Array 13 name = ENERGY_M2 Array 14 name = NUT Array 15 name = NUT_M1 Array 16 name = NUT_M2 Array 17 name = DENSITY Array 18 name = DENSITY_M1 Array 19 name = DENSITY_M2 Array 20 name = MU_LAM Array 21 name = MU_TURB Array 22 name = WALL_DIST Array 23 name = BODY_FORCES Number Of Components: 26 Number Of Tuples: 31488 Copy Tuple Flags: ( 1 1 1 1 1 0 1 ) Interpolate Flags: ( 1 1 1 1 1 0 0 ) Pass Through Flags: ( 1 1 1 1 1 1 1 ) Scalars: (none) Vectors: (none) Normals: (none) TCoords: (none) Tensors: (none) GlobalIds: (none) PedigreeIds: (none) Point Data: Debug: Off Modified Time: 164208 Reference Count: 1 Registered Events: (none) Number Of Arrays: 0 Number Of Components: 0 Number Of Tuples: 0 Copy Tuple Flags: ( 1 1 1 1 1 0 1 ) Interpolate Flags: ( 1 1 1 1 1 0 0 ) Pass Through Flags: ( 1 1 1 1 1 1 1 ) Scalars: (none) Vectors: (none) Normals: (none) TCoords: (none) Tensors: (none) GlobalIds: (none) PedigreeIds: (none) Bounds: Xmin,Xmax: (-0.1, 0.3) Ymin,Ymax: (-0.100002, 2.60209e-18) Zmin,Zmax: (-0.100002, 2.60209e-18) Compute Time: 379083 Number Of Points: 34943 Point Coordinates: 0x4aa82b0 Locator: 0 Number Of Pieces: 1 Piece: -1 Ghost Level: 0Maybe it's because the point data fields, like the scalars and vectors you mentioned, are empty? I could probably fill in the gaps. Sohail --- On Tue, 3/1/11, Berk Geveci <berk.gev...@kitware.com> wrote: From: Berk Geveci <berk.gev...@kitware.com> Subject: Re: [Paraview] Using streamtracer/gradient filters on "multi-block" data set To: "Sohail Shafii" <sohailsha...@yahoo.com> Cc: paraview@paraview.org Date: Tuesday, March 1, 2011, 5:07 PM By any chance, does this multi-block dataset contain a block that does not have arrays (scalars and/or vectors)? That's probably why those filters are disabled. You can always use Extract Blocks to extract the block you are interested in and then apply the filter. As for the Programmable Filter, if you set the output type to vtkUnstructuredGrid, you should be able to do: self.GetOutput().ShallowCopy(self.GetInput().GetBlock(0)) assuming that block 0 is a uns. grid. -berk On Tue, Mar 1, 2011 at 5:29 PM, Sohail Shafii <sohailsha...@yahoo.com> wrote: Hi, I've read in a CAS file, which Paraview read in a Multi-block dataset, which contains within it a unstructured grid. Initially I had a problem where all of the data items were one-tuple arrays. So I created a UVW (3-tuple velocity) array and added it to the pipeline this way using a Python programmable filter: input = self.GetInput() output = self.GetOutput() output.ShallowCopy(input) ****create array here*** output.GetBlock(0).GetCellData().AddArray(UVWArray) Note that "GetBlock(0)" gives me access to the grid object. For some reason the gradients and streamtracer filters were greyed out and unavailable. So I decided to make the output variable a vtkUnstructuredGrid instead and transferred the UVW array to it this way: output.GetPointData().AddArray(UVWArray) Nope...didn't work. Any thoughts how I can modify the pipeline so that the streamtracer and gradients of unstructured data sets array can become usable? I'm guessing there is something in those classes which tells Paraview that they require certain input types. I've seen references to stuff like FillInputPortInformation. Thanks, Sohail _______________________________________________ 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 -----Inline Attachment Follows----- _______________________________________________ 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