[Paraview] Generating several fields with Calculator

[Berk Geveci]

No, you need to use the python programmable filter (in conjunction
with numpy) to do that. Here is an example script applied after a
sphere source:

inp = inputs[0]
ns = inp.PointData['Normals']
output.PointData.append(ns*3, "array1")
output.PointData.append(ns/2, "array2")

Here ns is a numpy array (sort of). So, everything numpy supports
should be available to manipulate ns. Also, if you have the source
code, look at /Utilities/VTKPythonWrapping/paraview/vtk/algorithms.py
for some of the algorithms already available.

I did not do any performance comparisons yet but this should actually
be quite faster than the calculator.

I will document this fully for 3.8. Feel free to ask any questions meanwhile.

-berk


On Wed, Dec 2, 2009 at 5:30 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
> With the Python API, is it possile, in a single instance of Calculator, to
> compute several new scalar or vector fields, which would involve having
> several different functions associated to the newly created fields?
>
>
> ________________________________
> Avec Internet Explorer, surfez en toute discrétion sur internet Cliquez ici
> !
> _______________________________________________
> 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
>
>