<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1458033338354_37324"><span id="yui_3_16_0_1_1458033338354_39564">Hi Cory,</span></div><div id="yui_3_16_0_1_1458033338354_37324"><span><br></span></div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr"><span id="yui_3_16_0_1_1458033338354_37863">Thank you for your email. I tried that example sphere source -> Delaunay3D -> Python Annotation filter and it works fine. I set the python expression to algs.sum(algs.volume(inputs[0])) and then to </span>sum(volume(inputs[0])) and it works in both cases. </div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr">The type from the information panel is Table.</div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr"><br></div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr">But, it turns out that for my case the problem is with the Python expression, when I use this expression algs.sum(algs.volume(inputs[0])) I get errors while this expression sum(volume(inputs[0])) solves the problem. The type from the information panel is Table.</div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr"><br></div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr">Can I ask what does inputs[0] mean in the python expression. I have no background in python, that's why the expression seems odd to me.</div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr"><br></div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr">Regards,</div><div id="yui_3_16_0_1_1458033338354_37324" dir="ltr">Islem Megdiche</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: verdana, helvetica, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> Le Lundi 14 mars 2016 15h04, Cory Quammen <cory.quammen@kitware.com> a écrit :<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv2479216219"><div><div dir="ltr">One more thing: you should be able to change the Python expression to<div><br clear="none"></div><div>sum(volume(inputs[0]))</div></div><div class="yiv2479216219gmail_extra"><br clear="none"><div class="yiv2479216219yqt0944799831" id="yiv2479216219yqt81816"><div class="yiv2479216219gmail_quote">On Mon, Mar 14, 2016 at 10:09 AM, Cory Quammen <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:cory.quammen@kitware.com" target="_blank" href="mailto:cory.quammen@kitware.com">cory.quammen@kitware.com</a>></span> wrote:<br clear="none"><blockquote class="yiv2479216219gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div dir="ltr">Hi Islem,<div><br clear="none"></div><div>Sorry for the late reply. I've been swamped lately.</div><div><br clear="none"></div><div>Thank you for the detailed explanation of what you are doing. That really helps us narrow down what might be going on.</div><div><br clear="none"></div><div>I'm not sure what the problem is. I have a simple pipeline example where this works:</div><div><br clear="none"></div><div>Sphere source -> Delaunay3D -> Python Annotation filter</div><div><br clear="none"></div><div>The Delaunay3D filter produces an unstructured grid, from which I am able to get the volumes.</div><div><br clear="none"></div><div>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.</div><div><br clear="none"></div><div>If it is indeed a multiblock data set, please try this:</div><div><br clear="none"></div><div>Place a MergeBlocks filter between your Threshold filter and Python Annotation filter.</div><div><br clear="none"></div><div>Please see if that works. If it does, we'll move on to multiplying the volume by the water fraction.</div><div><br clear="none"></div><div>Thanks,</div><div>Cory</div></div><div class="yiv2479216219HOEnZb"><div class="yiv2479216219h5"><div class="yiv2479216219gmail_extra"><br clear="none"><div class="yiv2479216219gmail_quote">On Tue, Mar 8, 2016 at 6:35 AM, Megdich Islem <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:megdich_islem@yahoo.fr" target="_blank" href="mailto:megdich_islem@yahoo.fr">megdich_islem@yahoo.fr</a>></span> wrote:<br clear="none"><blockquote class="yiv2479216219gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div style="color:#000;background-color:#fff;font-family:verdana, helvetica, sans-serif;font-size:16px;"><div><div><div style="color:#000;background-color:#fff;font-family:verdana, helvetica, sans-serif;font-size:16px;"><div><div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">Hi cory,<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">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'.<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">(picture 4 and 5).<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">I googled that link <u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin-bottom:0.0001pt;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"><a rel="nofollow" shape="rect" target="_blank" href="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</a><br clear="none">
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<u></u><u></u></span></div>
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<div style="margin-bottom:0.0001pt;line-height:15pt;"><span style="font-size:10.0pt;">Docs » Index
paraview.simple.PythonAnnotation paraview.simple.PythonAnnotation
paraview.simple.PythonAnnotation(*input, **params) This filter uses Python to
calculate an expression. It<u></u><u></u></span></div>
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<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">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 ??<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">In this expression algs.sum(algs.volume(inputs[</span><b><i><span style="font-size:12.0pt;">0</span></i></b><span style="font-size:12pt;font-family:Verdana, sans-serif;">])), what
does the </span><b><i><span style="font-size:12.0pt;">0 </span></i></b><span style="font-size:12pt;font-family:Verdana, sans-serif;"> stands for ? <u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">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.<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">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.<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;"> </span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">Any helps concerning this matter will be very
much appreciated.<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">Regards,<u></u><u></u></span></div>
<div style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">Islem Megdiche<u></u><u></u></span></div>
<div dir="ltr" style="margin:1.2pt 0cm;"><span style="font-size:12pt;font-family:Verdana, sans-serif;">PhD student<u></u><u></u></span></div></div><div><br clear="none"><br clear="none"></div><div></div></div></div></div><div><div><div> <div style="font-family:verdana, helvetica, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"><font size="2" face="Arial"> Le Mardi 23 février 2016 14h21, Cory Quammen <<a rel="nofollow" shape="rect" ymailto="mailto:cory.quammen@kitware.com" target="_blank" href="mailto:cory.quammen@kitware.com">cory.quammen@kitware.com</a>> a écrit :<br clear="none"></font></div> <br clear="none"><br clear="none"> <div>Hi Islem,<br clear="none"><br clear="none">Please reply-all to keep the discussion on the list so that others may<br clear="none">benefit from the discussion.<br clear="none"><br clear="none">First, is there a data array that describes whether a volume element<br clear="none">in your mesh contains water or some other element? If so, you can use<br clear="none">the Threshold filter under the Filters -> Alphabetical -> Threshold<br clear="none">menu to select only the elements representing water. You will have to<br clear="none">set the minimum and maximum to the value that represents water, then<br clear="none">click Apply.<br clear="none"><br clear="none">HTH,<br clear="none">Cory<br clear="none"><br clear="none">On Mon, Feb 22, 2016 at 1:14 PM, Megdich Islem <<a rel="nofollow" shape="rect" ymailto="mailto:megdich_islem@yahoo.fr" target="_blank" href="mailto:megdich_islem@yahoo.fr">megdich_islem@yahoo.fr</a>> wrote:<br clear="none">> Hi again,<br clear="none">><br clear="none">> Thank you for your suggestion, Could you please explain how to do the first<br clear="none">> step because I am not the one who created the picture I sent you before.<br clear="none">><br clear="none">> Regards,<br clear="none">> Islem<br clear="none">><br clear="none">><br clear="none">> Le Lundi 22 février 2016 16h45, Megdich Islem <<a rel="nofollow" shape="rect" ymailto="mailto:megdich_islem@yahoo.fr" target="_blank" href="mailto:megdich_islem@yahoo.fr">megdich_islem@yahoo.fr</a>> a<br clear="none">> écrit :<br clear="none">><br clear="none">><br clear="none">> Thank you for your reply. I will try your suggestions.<br clear="none">><br clear="none">> Regards,<br clear="none">> Islem<br clear="none">><br clear="none">><br clear="none">> Le Lundi 22 février 2016 14h22, Cory Quammen <<a rel="nofollow" shape="rect" ymailto="mailto:cory.quammen@kitware.com" target="_blank" href="mailto:cory.quammen@kitware.com">cory.quammen@kitware.com</a>> a<br clear="none">> écrit :<br clear="none">><br clear="none">><br clear="none">> Islem,<br clear="none">><br clear="none">> There are likely two steps:<br clear="none">><br clear="none">> 1). Threshold your volume to identify only the water-containing cells.<br clear="none">> It looks like you have a way to do this already?<br clear="none">><br clear="none">> 2). Compute the volumes of the water-containing cells and summing them up.<br clear="none">><br clear="none">> You can use the Threshold filter to do number 1 if you have a material<br clear="none">> code in the cell data. To compute the volume of the cells, add a<br clear="none">> Python Annotation filter to the Threshold filter. Set the Expression<br clear="none">> to<br clear="none">><br clear="none">> algs.sum(algs.volume(inputs[0]))<br clear="none">><br clear="none">> This uses the numpy-like interface in the Python layer to compute the<br clear="none">> volumes of the cells and sum them all up. The Python Annotation filter<br clear="none">> should display the volume with a text label in your renderer.<br clear="none">><br clear="none">> Hope this helps,<br clear="none">> Cory<br clear="none">><br clear="none">> On Mon, Feb 22, 2016 at 9:09 AM, Megdich Islem <<a rel="nofollow" shape="rect" ymailto="mailto:megdich_islem@yahoo.fr" target="_blank" href="mailto:megdich_islem@yahoo.fr">megdich_islem@yahoo.fr</a>><br clear="none">> wrote:<br clear="none">>> Hi Cory,<br clear="none">>><br clear="none">>> Thank you very much for your prompt reply. I've attached here a picture<br clear="none">>> that<br clear="none">>> illustrates my problem. I am working on the break of bund walls and I want<br clear="none">>> to compute the volume of water that overtops the bund wall (walls<br clear="none">>> surrounding storage tank), after the solution reaches the steady state.<br clear="none">>><br clear="none">>> Regards,<br clear="none">>> Islem<br clear="none">>><br clear="none">>><br clear="none">>> Le Lundi 22 février 2016 13h53, Cory Quammen <<a rel="nofollow" shape="rect" ymailto="mailto:cory.quammen@kitware.com" target="_blank" href="mailto:cory.quammen@kitware.com">cory.quammen@kitware.com</a>> a<br clear="none">>> écrit :<br clear="none">>><br clear="none">>><br clear="none">>> Hi Islem,<br clear="none">>><br clear="none">>> This is the place to ask ParaView questions! There is some activity on<br clear="none">>> StackOverflow, but most people ask questions on this mailing list.<br clear="none">>><br clear="none">>> Could you clarify what you want to compute? Do you just want to subset<br clear="none">>> a volume mesh and display the results over time? Do you want to<br clear="none">>> compute one quantity and display it as a graph over time? Do you want<br clear="none">>> to compute a single number from a time series data set?<br clear="none">>><br clear="none">>> Thanks,<br clear="none">>> Cory<br clear="none">>><br clear="none">>> On Mon, Feb 22, 2016 at 8:48 AM, Megdich Islem <<a rel="nofollow" shape="rect" ymailto="mailto:megdich_islem@yahoo.fr" target="_blank" href="mailto:megdich_islem@yahoo.fr">megdich_islem@yahoo.fr</a>><br clear="none">>> wrote:<br clear="none">>>> Hello,<br clear="none">>>><br clear="none">>>> I am new to paraview, and I didn't find a forum under paraview website to<br clear="none">>>> ask my question.<br clear="none">>>> My question is is there any filter in paraview that lets to compute the<br clear="none">>>> evolution of a quantity within a specific volume of the mesh.<br clear="none">>>><br clear="none">>>> Regards,<br clear="none">>>> Islem<br clear="none">>>><br clear="none">>>> _______________________________________________<br clear="none">>>> Powered by <a rel="nofollow" shape="rect" target="_blank" href="http://www.kitware.com/">www.kitware.com</a><br clear="none">>>><br clear="none">>>> Visit other Kitware open-source projects at<br clear="none">>>> <a rel="nofollow" shape="rect" target="_blank" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a><br clear="none">>>><br clear="none">>>> Please keep messages on-topic and check the ParaView Wiki at:<br clear="none">>>> <a rel="nofollow" shape="rect" target="_blank" href="http://paraview.org/Wiki/ParaView">http://paraview.org/Wiki/ParaView</a><br clear="none">>>><br clear="none">>>> Search the list archives at: <a rel="nofollow" shape="rect" target="_blank" href="http://markmail.org/search/?q=ParaView">http://markmail.org/search/?q=ParaView</a><br clear="none">>>><br clear="none">>>> Follow this link to subscribe/unsubscribe:<br clear="none">>>> <a rel="nofollow" shape="rect" target="_blank" href="http://public.kitware.com/mailman/listinfo/paraview">http://public.kitware.com/mailman/listinfo/paraview</a><br clear="none">>><br clear="none">>>><br clear="none">>><br clear="none">>><br clear="none">>><br clear="none">>> --<br clear="none">>> Cory Quammen<br clear="none">>> R&D Engineer<br clear="none">>> Kitware, Inc.<div><br clear="none">><br clear="none">>><br clear="none">>><br clear="none">>><br clear="none">><br clear="none">><br clear="none">><br clear="none">> --<br clear="none">> Cory Quammen<br clear="none">> R&D Engineer<br clear="none">> Kitware, Inc.<br clear="none">><br clear="none">><br clear="none">><br clear="none">><br clear="none"><br clear="none"><br clear="none"><br clear="none">-- <br clear="none">Cory Quammen<br clear="none">R&D Engineer<br clear="none">Kitware, Inc.</div><br clear="none"><br clear="none"></div> </div> </div> </div></div></div></div></div></blockquote></div><br clear="none"><br clear="all"><div><br clear="none"></div>-- <br clear="none"><div>Cory Quammen<br clear="none">R&D Engineer<br clear="none">Kitware, Inc.</div>
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</div></div></blockquote></div></div><br clear="none"><br clear="all"><div><br clear="none"></div>-- <br clear="none"><div class="yiv2479216219gmail_signature">Cory Quammen<br clear="none">R&D Engineer<br clear="none">Kitware, Inc.</div>
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