[Rotidpor]

Hello everyone.


I'm very new at using paraview and I still have some trouble treating all my data efficiently.
What I want to do is integrating quantities on successive slices in my domain. I know how to do multiple slices with a given spacing in the "slice" feature and I know how to calculate quantities using the calculator feature and integrate them with integrate variables.

But what I want to do is create, let's say, 50 slices and integrate my quantities on each slice individually so that I could obtain a chart with the number/coordinates of the 50 slices and all the quantities.


The problem I have is that when I do multiple slices, they all are united in one unique "slice".
Also, I don't know how to use "integrate variables" on multiple objects in the tree.


Any help will be greatly appreciated.


Thank you for reading and I'm sorry if what I ask for is trivia.

[virengos]

Hi Fab,
this should not be a big problem at all !
1.) you may either use the programmable filter
2.) or perform it with a short python script


Could you please upload your test case or some pictures ?


Damian

[Rotidpor]

Hi Damian, thank you for your reply.



I hardly ever used python. I looked into the programmable filter but I'm afraid anything code-related is hardly understandable for me.


I don't know how my case could help as my question is general about paraview. Well, at least I can cut slices one by one and integrate the variables I want over them.



I might try to look more into python and programming scripts... Looks like a usefull, handy tool.

[Flowkersma]

Hi Fab,

If you want an example of very similar Python script, have a look at this thread

[virengos]

Hi Fab,
I did a simple test example. Maybe it's helpful for you.


Perform following steps in ParaView:

1.) Load your data
2.) Create all required slices (see my screenshot)
3.) Add the "Programmable Filter" to the pipe line
4.) Add my code and press "Apply"
5.) Afterwards you can import the *.csv file into ParaView and plot your data or process the data with other tools

The code should do following:

• iterate over all slices
• create an Integrate Variable Filter
• write all the slice areas to the file 'areaSlice.csv'

import paraview.simple as pv
import os
folder = "C:"+"/temp/"
os.chdir(folder)
print(os.getcwd())
source0 = pv.FindSource('Wavelet1')
sliceArea = []
all_sources = pv.GetSources()

with open('areaSlice.csv','w') as file:
    for key, value in all_sources.keys():
        if 'Slice' in key:
            print(key)
            slice = pv.FindSource(key)
            source = pv.SetActiveSource(slice)
            newIntg = pv.IntegrateVariables(Input=source)
            sliceArea.append(newIntg.CellData.GetArray('Area').GetRange()[0])
            print(sliceArea[-1])
            pv.Delete(newIntg)
            file.write('Slice: {} Area: {}\n'.format(key,sliceArea[-1]))

The test was performed with ParaView 5.6 on Windows 10
2019-05-30_17h39_23.jpg