Re: [Paraview] programmable access to vector components (via Python)
It appears to me you have found a limitation (or bug?) in the Calculator filter. My comments are inserted below. I just submitted a bug report: http://paraview.org/Bug/view.php?id=13204 files, however, I have never used it. I graduated from VTK XML-structured ASCII-text results files to the EnSight binary-formatted specification in order to get compact, manageable file-sets for my modestly large explicit transient dynamic simulations. We are happy with HDF5 but this requires a own reader plugin for our format which we wrote some years ago. With HDF5 we have also access via Matlab, with is a plus for us. If the error message reflects a limitation in the Calculator, then the Calculator only processes scalars and vectors (1st-order tensors), and that in itself is no small accomplishment. My mechTensor is just a vector with 6 components, so the limitation is with the size of the vector. This answers two of my questions: * am I right with the assumption, that the calculator does not like double characters after the underline? * Is this XX, YY, ... coming from Paraview? Anyone who can help me with the following two? * How do I access the vector components via python? * Where can I find more information about the python interface? Thanks a lot, Fabian ___ 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
[Paraview] Custom Interaction Style Without Mouse
Hello, My team and I are working on creating a new method to interact with ParaView. Our library currently has a skeleton framework with events of its own to be called for zoom or pan or rotate (more will be added when we get one of them working). We are having immense difficulty interacting with ParaView, however. We found the vtkPVInteractorStyle class and have been attempting to access it (our library was set as a friend) but most recently ran into a problem when calling OnButtonUp. The exact error was related to X - X Error: BadAccess (attempt to access private resource denied). We've found that ParaView hangs for about 5 to 10 seconds on this line this-InvokeEvent(vtkCommand::EndInteractionEvent); of this method void vtkPVInteractorStyle::OnButtonUp(int button) in vtkPVInteractorStyle.cxx. There must be some way to control the renderer using something other than a mouse and keyboard. Are we going about this the correct way? Is there an entirely different method we should be using? Any and all help is appreciated. Thanks, David Zemon ___ 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
Re: [Paraview] programmable access to vector components (via Python)
Which version of ParaView is this? This bug sounds very familiar to me and I vaguely remember sitting down with Utkarsh to fix it. If it is an older version, can you try 3.14? As for the Python notation, take a look at: http://paraview.org/Wiki/ParaView/Users_Guide/Python_Programmable_Filter http://paraview.org/Wiki/ParaView/Users_Guide/Python_Calculator You need to use something like: inputs[0].CellData['**mechTensor'][:, n] where n is whichever component that you are accessing. This notation is based on Numpy. You can learn more about it here: Guide to NumPy - Trelgolhttp://www.google.com/url?sa=trct=jq=numpy%20booksource=webcd=1ved=0CGAQFjAAurl=http%3A%2F%2Fwww.tramy.us%2Fnumpybook.pdfei=iee_T6LGNeK02gWuqqSwDQusg=AFQjCNEqRdLrjjyLB8CFsWb1wecnEuDfNg Note that NumPy is much more powerful and efficient that the Array Calculator so I'd recommend using the Python Calculator or the Python Programmable Filter whenever possible. -berk On Fri, May 25, 2012 at 10:03 AM, Fabian Wein fabian.w...@am.uni-erlangen.de wrote: It appears to me you have found a limitation (or bug?) in the Calculator filter. My comments are inserted below. I just submitted a bug report: http://paraview.org/Bug/view.**php?id=13204http://paraview.org/Bug/view.php?id=13204 files, however, I have never used it. I graduated from VTK XML-structured ASCII-text results files to the EnSight binary-formatted specification in order to get compact, manageable file-sets for my modestly large explicit transient dynamic simulations. We are happy with HDF5 but this requires a own reader plugin for our format which we wrote some years ago. With HDF5 we have also access via Matlab, with is a plus for us. If the error message reflects a limitation in the Calculator, then the Calculator only processes scalars and vectors (1st-order tensors), and that in itself is no small accomplishment. My mechTensor is just a vector with 6 components, so the limitation is with the size of the vector. This answers two of my questions: * am I right with the assumption, that the calculator does not like double characters after the underline? * Is this XX, YY, ... coming from Paraview? Anyone who can help me with the following two? * How do I access the vector components via python? * Where can I find more information about the python interface? Thanks a lot, Fabian __**_ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/** opensource/opensource.htmlhttp://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/**ParaView http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/**mailman/listinfo/paraviewhttp://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
Re: [Paraview] programmable access to vector components (via Python)
I think this might be same as the bug: http://paraview.org/Bug/view.php?id=12951 Utkarsh On Fri, May 25, 2012 at 4:13 PM, Berk Geveci berk.gev...@kitware.com wrote: Which version of ParaView is this? This bug sounds very familiar to me and I vaguely remember sitting down with Utkarsh to fix it. If it is an older version, can you try 3.14? As for the Python notation, take a look at: http://paraview.org/Wiki/ParaView/Users_Guide/Python_Programmable_Filter http://paraview.org/Wiki/ParaView/Users_Guide/Python_Calculator You need to use something like: inputs[0].CellData['mechTensor'][:, n] where n is whichever component that you are accessing. This notation is based on Numpy. You can learn more about it here: Guide to NumPy - Trelgol Note that NumPy is much more powerful and efficient that the Array Calculator so I'd recommend using the Python Calculator or the Python Programmable Filter whenever possible. -berk On Fri, May 25, 2012 at 10:03 AM, Fabian Wein fabian.w...@am.uni-erlangen.de wrote: It appears to me you have found a limitation (or bug?) in the Calculator filter. My comments are inserted below. I just submitted a bug report: http://paraview.org/Bug/view.php?id=13204 files, however, I have never used it. I graduated from VTK XML-structured ASCII-text results files to the EnSight binary-formatted specification in order to get compact, manageable file-sets for my modestly large explicit transient dynamic simulations. We are happy with HDF5 but this requires a own reader plugin for our format which we wrote some years ago. With HDF5 we have also access via Matlab, with is a plus for us. If the error message reflects a limitation in the Calculator, then the Calculator only processes scalars and vectors (1st-order tensors), and that in itself is no small accomplishment. My mechTensor is just a vector with 6 components, so the limitation is with the size of the vector. This answers two of my questions: * am I right with the assumption, that the calculator does not like double characters after the underline? * Is this XX, YY, ... coming from Paraview? Anyone who can help me with the following two? * How do I access the vector components via python? * Where can I find more information about the python interface? Thanks a lot, Fabian ___ 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
