Hi Utkarsh, Thank you for the help! This indeed explains a lot. I will implement my own file series logic and let you know if I have questions/problems.
Thanks again, Josh ________________________________________ From: Utkarsh Ayachit [utkarsh.ayac...@kitware.com] Sent: Tuesday, July 24, 2012 9:55 AM To: Peter Schmitt Cc: Joshua Murphy; paraview@paraview.org Subject: Re: [Paraview] Question on Multiple Ports in Custom Reader (repost from developer list) Josh, Pete's observation is indeed correct. FileSeriesReader does not support multiple ports. You can very easily add support to your reader to take in a list of files, instead of a single file and then implement the logic for the file-series with the reader itself. All you need is : * AddFileName/RemoveAllFileNames methods on the reader * "FileNames", "TimestepValues" properties on the reader proxy (similar to the one on the file series reader proxy) * RequestInformation() should then announce the number of timesteps (look at vtkFileSeriesReader.cxx) * RequestData() should then respect the requested time ((look at vtkFileSeriesReader.cxx) Utkarsh On Fri, Jul 20, 2012 at 1:41 PM, Peter Schmitt <pschmit...@gmail.com> wrote: > Hi Josh, > > On Thu, Jul 12, 2012 at 10:51 AM, Joshua Murphy > <joshua.mur...@lasp.colorado.edu> wrote: > >> Here is a version of my generic reader that will build a non-time series >> version and a time series version. This way you can observe the behavior. >> A file is not read in the reader, but it generates sample data on its own... >> just select any txt file to test. (as noted in previous emails, the >> information objects are not provided properly to requestInformation and >> requestData when using the time series version)... > > It seems that vtkFileSeriesReader does not support multiple output > ports. Quoting Utkarsh from > http://www.paraview.org/pipermail/paraview/2011-December/023494.html > >> vtkFileSeriesReader cannot support multiple output ports. Number of >> output ports has to be defined in the constructor of a class. Since >> the internal reader to use is not set until much later, >> vtkFileSeriesReader cannot report but 1 output port in the construtor >> and that cannot be changed afterwords. >> >> Maybe you can try supclassing the vtkFileSeriesReader to add support >> for that, but I'm not sure how much effort would it be to support >> requests from multiple output ports. Alternatively, you may just want >> to implemented file-series support in your reader. > > Does anyone have a good example of file-series support in a reader > other than vtkFileSeriesReader documented here > http://www.paraview.org/Wiki/Animating_legacy_VTK_file_series#Making_custom_readers_work_with_file_series > ? > > Cheers, > Pete _______________________________________________ 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
