One more thing: you should be able to change the Python expression to sum(volume(inputs[0]))
On Mon, Mar 14, 2016 at 10:09 AM, Cory Quammen <[email protected]> wrote: > Hi Islem, > > Sorry for the late reply. I've been swamped lately. > > Thank you for the detailed explanation of what you are doing. That really > helps us narrow down what might be going on. > > I'm not sure what the problem is. I have a simple pipeline example where > this works: > > Sphere source -> Delaunay3D -> Python Annotation filter > > The Delaunay3D filter produces an unstructured grid, from which I am able > to get the volumes. > > I suspect ParaView readds your OpenFOAM data set as a multiblock data set? > Could you look at the Info panel and report it's Type. It should be the > first item under the "Statistics" sub-section. > > If it is indeed a multiblock data set, please try this: > > Place a MergeBlocks filter between your Threshold filter and Python > Annotation filter. > > Please see if that works. If it does, we'll move on to multiplying the > volume by the water fraction. > > Thanks, > Cory > > On Tue, Mar 8, 2016 at 6:35 AM, Megdich Islem <[email protected]> > wrote: > >> Hi cory, >> >> I was working on the case of water computation in the desired domain >> taking into account your suggestions. I attached here some pictures that >> helps to figure out how I did it. I created the domain in which I want to >> compute the volume of water using the clip filter and then I thresolded the >> clipped domain to contain only the cells ranging between 0.5 and 1 of >> alpha water and I ended up with the domain illustrated in picture 3, and >> then I applied the annotation filter setting up the array association to >> Point Data and the expression to algs.sum(algs.volume(inputs[0])), but I >> ended up with an error in the render view and output message stating that >> AttributeError:'None Type' object has no attribute 'GetCellData'. I >> couldn't understand the reason, I tried all the array Association options, >> I got the same error, except for the Row Data, I got this error: >> AttributeError:'NoneType' object has no attribute 'GetNumberOfArrays'. >> (picture 4 and 5). >> >> I googled that link >> >> paraview.simple.PythonAnnotation — ParaView/Python 5.0.1-RC1-193-gad11756 >> documentation >> <http://www.paraview.org/ParaView/Doc/Nightly/www/py-doc/paraview.simple.PythonAnnotation.html> >> >> >> >> >> >> >> >> paraview.simple.PythonAnnotation — ParaView/Python 5.0.1-RC1-193-gad11756 >> documentation >> <http://www.paraview.org/ParaView/Doc/Nightly/www/py-doc/paraview.simple.PythonAnnotation.html> >> Docs » Index paraview.simple.PythonAnnotation >> paraview.simple.PythonAnnotation paraview.simple.PythonAnnotation(*input, >> **params) This filter uses Python to calculate an expression. It >> Afficher sur *www.paraview.org* >> <http://www.paraview.org/ParaView/Doc/Nightly/www/py-doc/paraview.simple.PythonAnnotation.html> >> Aperçu par Yahoo >> >> >> It says that I need to set the input which I didn't know how to do it >> since it doesn't ask for any input in the Properties Panel. Any solutions >> for this problem ?? >> >> In this expression algs.sum(algs.volume(inputs[*0*])), what does the *0 * >> stands >> for ? >> >> I think if I threshold the domain in which I want to calculate the volume >> of water, let's say between 0.5 and 1, then I will end up by inaccurate >> water volume because I am including volume of air in the computed volume >> and on the other hand I am ignoring the cells that contain less than 0.5 of >> water. >> >> That's why, I am looking for an algorithm that multiply every cell >> containing water by the coefficient alpha water. You find attached in >> picture 6, an example of how I want to calculate the water volume. I don't >> know how to program it. >> >> Any helps concerning this matter will be very much appreciated. >> Regards, >> Islem Megdiche >> PhD student >> >> >> Le Mardi 23 février 2016 14h21, Cory Quammen <[email protected]> >> a écrit : >> >> >> Hi Islem, >> >> Please reply-all to keep the discussion on the list so that others may >> benefit from the discussion. >> >> First, is there a data array that describes whether a volume element >> in your mesh contains water or some other element? If so, you can use >> the Threshold filter under the Filters -> Alphabetical -> Threshold >> menu to select only the elements representing water. You will have to >> set the minimum and maximum to the value that represents water, then >> click Apply. >> >> HTH, >> Cory >> >> On Mon, Feb 22, 2016 at 1:14 PM, Megdich Islem <[email protected]> >> wrote: >> > Hi again, >> > >> > Thank you for your suggestion, Could you please explain how to do the >> first >> > step because I am not the one who created the picture I sent you before. >> > >> > Regards, >> > Islem >> > >> > >> > Le Lundi 22 février 2016 16h45, Megdich Islem <[email protected]> >> a >> > écrit : >> > >> > >> > Thank you for your reply. I will try your suggestions. >> > >> > Regards, >> > Islem >> > >> > >> > Le Lundi 22 février 2016 14h22, Cory Quammen <[email protected]> >> a >> > écrit : >> > >> > >> > Islem, >> > >> > There are likely two steps: >> > >> > 1). Threshold your volume to identify only the water-containing cells. >> > It looks like you have a way to do this already? >> > >> > 2). Compute the volumes of the water-containing cells and summing them >> up. >> > >> > You can use the Threshold filter to do number 1 if you have a material >> > code in the cell data. To compute the volume of the cells, add a >> > Python Annotation filter to the Threshold filter. Set the Expression >> > to >> > >> > algs.sum(algs.volume(inputs[0])) >> > >> > This uses the numpy-like interface in the Python layer to compute the >> > volumes of the cells and sum them all up. The Python Annotation filter >> > should display the volume with a text label in your renderer. >> > >> > Hope this helps, >> > Cory >> > >> > On Mon, Feb 22, 2016 at 9:09 AM, Megdich Islem <[email protected]> >> > wrote: >> >> Hi Cory, >> >> >> >> Thank you very much for your prompt reply. I've attached here a picture >> >> that >> >> illustrates my problem. I am working on the break of bund walls and I >> want >> >> to compute the volume of water that overtops the bund wall (walls >> >> surrounding storage tank), after the solution reaches the steady >> state. >> >> >> >> Regards, >> >> Islem >> >> >> >> >> >> Le Lundi 22 février 2016 13h53, Cory Quammen <[email protected]> >> a >> >> écrit : >> >> >> >> >> >> Hi Islem, >> >> >> >> This is the place to ask ParaView questions! There is some activity on >> >> StackOverflow, but most people ask questions on this mailing list. >> >> >> >> Could you clarify what you want to compute? Do you just want to subset >> >> a volume mesh and display the results over time? Do you want to >> >> compute one quantity and display it as a graph over time? Do you want >> >> to compute a single number from a time series data set? >> >> >> >> Thanks, >> >> Cory >> >> >> >> On Mon, Feb 22, 2016 at 8:48 AM, Megdich Islem <[email protected] >> > >> >> wrote: >> >>> Hello, >> >>> >> >>> I am new to paraview, and I didn't find a forum under paraview >> website to >> >>> ask my question. >> >>> My question is is there any filter in paraview that lets to compute >> the >> >>> evolution of a quantity within a specific volume of the mesh. >> >>> >> >>> Regards, >> >>> Islem >> >>> >> >>> _______________________________________________ >> >>> 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 >> >>> >> >>> Search the list archives at: http://markmail.org/search/?q=ParaView >> >>> >> >>> Follow this link to subscribe/unsubscribe: >> >>> http://public.kitware.com/mailman/listinfo/paraview >> >> >> >>> >> >> >> >> >> >> >> >> -- >> >> Cory Quammen >> >> R&D Engineer >> >> Kitware, Inc. >> >> > >> >> >> >> >> >> >> > >> > >> > >> > -- >> > Cory Quammen >> > R&D Engineer >> > Kitware, Inc. >> > >> > >> > >> > >> >> >> >> -- >> Cory Quammen >> R&D Engineer >> Kitware, Inc. >> >> >> > > > -- > Cory Quammen > R&D Engineer > Kitware, Inc. > -- Cory Quammen R&D Engineer Kitware, Inc.
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