[Paraview] Filtering Data Set by Second Data Set

[Favre Jean]

The Find Data filter (under the Edit menu) will do exactly this

suppose you have a dataset with two fields called "A" and "B"

Use Find Data
Create a Selection

Find Cells from "<name of your grid in the pipeline browser>"
Select   "A"    is >= x   # (replace "x" by the numeric value

click on "Run Selection Query"
click on Extract Selection and a new object is created in the pipeline.
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Should you want to do this programmatically (using python), it is a far less obvious to figure out the right syntax, because the calls are not being traced. :-(

Here is the code I would use:

selection=SelectCells()
selection.QueryString="scalar2 >= x"  # (replace "x" by the numeric value
selection.FieldType = 'CELL'
selection.UpdatePipelineInformation()

# create a new 'Extract Selection'
# assuming your input object is called "grid"

mySelection = ExtractSelection(Input=grid, Selection=selection)
mySelection.UpdatePipeline()
Show(mySelection)

HTH
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Jean/CSCS
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