[Paraview] Extracting min/max values of current data range as a variable in python

[Andy Bauer]

Hi,

Besides Yoshimi's way, you should be able to do something like the
following from pvpython, pvbatch or Python shell.
yourfilter.PointData.GetArray(<arrayname>).GetRange() # or CellData

For example, for a Python script for a Wavelet source you would do the
following:
w = Wavelet()
w.UpdatePipeline() # needed to execute the pipeline to create the output
w.PointData.GetArray("RTData").GetRange()

This will work for the output of a filter that returns a regular VTK data
set or a multiblock data set. If you want the range for only a single block
of a multiblock I'd recommend using the Extract Block filter to get that
block. It should be a shallow copy of the data set to do that so it should
be very fast, even if you don't need the output of the Extract Block filter
for anything else.

Best,
Andy

On Tue, Apr 11, 2017 at 9:29 PM, kenichiro yoshimi <rccm.kyoshimi at gmail.com>
wrote:

> Hi,
>
> I also want to know if there is a simple way to do, since I only have
> the somewhat redundant code:
> ---
> source = GetActiveSource()
>
> #options for component: -1, 0, 1 and 2 => Mag, X, Y, Z
> component = -1
>
> cdi = source.GetDataInformation().GetCompositeDataInformation()
>
> for i in range(cdi.GetNumberOfChildren()):
>   print 'Block Name: ', cdi.GetName(i)
>
>   data = cdi.GetDataInformation(i).GetCellDataInformation()
>   for j in range(data.GetNumberOfArrays()):
>     array = data.GetArrayInformation(j)
>     arrayName = array.GetName()
>     dataRange = array.GetComponentRange(component)
>     print arrayName, dataRange
> ---
>
> Thanks,
> yoshimi
>
> 2017-04-12 6:10 GMT+09:00 Jamison, Ryan Dale <rdjamis at sandia.gov>:
> > Hello Everyone,
> >
> > I’m wanting to gain more control over automation with my paraview python
> > scripts. This time around, I’d like to be able to extract information
> from
> > the model and use it in my python script.
> >
> > For example, I’d like to extract the minimum and maximum values of a cell
> > variable from a specific block and use those values in the python script.
> > Once I extract this information, I’d use it for some additional
> processing.
> > Something like:
> >
> > minValue, maxValue = someCoolParaviewFunction(blockName, variableName)
> >
> > Is this possible? If so, any suggestions on how to do it?
> >
> > Thanks,
> >
> > Ryan
> >
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