MantisBT - ParaView
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IDProjectCategoryView StatusDate SubmittedLast Update
0004161ParaView(No Category)public2006-12-06 19:462007-01-23 15:15
ReporterKen Moreland 
Assigned ToDave DeMarle 
PriorityhighSeverityfeatureReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
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Type
Summary0004161: Client side delivery
DescriptionThere needs to be a general mechanism for aggregating data and moving it to the client side. This is a requirement for our V&V scripting tools.
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Date ModifiedUsernameFieldChange
2011-06-16 13:10Zack GalbreathCategory => (No Category)

Notes
(0006218)
user521   
2007-01-17 13:41   
I added a facility for calculating min, max and sum of attribute values in vtkMinMax.cxx and for returning the result to the client via a paraview.fetch(), a python function. To do the parallel aggregation vtkReductionFilter tells each node to execute vtkMinMax to produce a per node min/max/sum, and then gathers the results to the root node and executes vtkMinMax again to produce a global min/max/sum.

Question 1: Do we want to make these general gather and aggregate operations available in the GUI, or are they solely meant for scripted applications?

For min/max/sum we have to execute vtkMinMax on the per node results to get a global result. However the default gather operation for the paraview GUI is to simply concatenate all per node results. For this reason vtkMinMax is not available from the GUI.

Question 1: Min/max/sum of attribute values is a very simple type of aggregation - it simply discards all geometry and aggregates the data values. What type of geometric aggregation do we need and for what data types?
(0006246)
Ken Moreland   
2007-01-23 15:15   
The current implementation seems to solve our current PGraph and Python scripting needs. As more use cases come up, we will generate new items in this tracker.