Hi, I am trying to visualize blood flow through the aorta from MRI scans. I have a series of .vti images with the velocity, each one a single time step. I opened them in paraview as a composite data set, and paraview seems to have loaded each time step correctly. I now need to use a temporalshiftscale to set the correct time for each step, and then use a particle trace to visualize the blood flow.
I'm having two problems: first of all, when I apply the temporalshiftscale, I get the following error message: ERROR: In /home/awiktor/Desktop/ParaView3/VTK/Filtering/vtkStreamingDemandDrivenPipeline.cxx, line 747 vtkCompositeDataPipeline (0x153c960): No maximum number of pieces has been set in the information for output port 0 on algorithm vtkFileSeriesReader(0x1537e70). I wasn't getting this error before when I was doing the same thing on the same data set, but something must have changed. Also, back when I wasn't getting this error message, I tried applying the ParticleTracer filter, and got the following error message: ERROR: In /home/awiktor/Desktop/ParaView3/VTK/Filtering/vtkDemandDrivenPipeline.cxx, line 728 vtkCompositeDataPipeline (0x11e2a10): Input port 1 of algorithm vtkTemporalStreamTracer(0x5be0420) has 0 connections but is not optional. Does anyone know what these errors mean, and how to fix them? Finally, I assume that the difference between stream tracer and particle tracer is that stream tracer operates on a single time step, whereas particle tracer incorporates multiple time steps. Is that true? And if that is the case, what does particle pathlines do? Thanks, Adam
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