Tobias, You could use a Grid Centered Attribute in the Xdmf file: <Grid ... <Topology ... <Geometry ... <Attribute Name="Specific Heat Capacity" Center="Grid" ..
This means that there is one value for the entire Grid. The down side is the way this is implemented in the vtkXdmfReader; it creates a point value array and duplicates that value in the array. To access it you would access like any other point attribute and read the first value. The other way (as you mentioned) is to parse the XML in your filter. If you do it this way, you can use an <Information> element in the Grid. <Grid .. <Information Name="Specific Heat Capacity" Value="1.0" /> Then use XdmfDOM to parse the XML, find the <Information> element, create an XdmfInformation, and then info->GetValue(); Since you'll know which element you're looking for, the easiest way to find the element is to use the XPath notation : (Python) node = dom.FindElementByPath( '/Xdmf/Domain/Grid/informati...@name = "Specific Heat Capacity"]') Jerry Tobias Brandvik wrote:
Hi all, I'm currently using the XDMF reader to read HDF5 files and this works fine both in serial and parallel mode. The HDF5 files come from a CFD code and only contain the primary flow variables (as multi-block structured 3D arrays). I have written a filter that calculates secondary flow variables - this also works well. However, the filter currently needs the user to input scalar values such as the specific heat capacity in order to calculate the secondary variables. What I would like to do is to read these in automatically from the XDMF or HDF5 files. So my question is, is there any way of getting the XDMF reader to read in the scalars and store them somewhere in such a way that they are accessible from the filter? If not, I guess I will have to modify the XDMF reader itself or open the XMDF/HDF5 file directly in the filter. Best wishes, Tobias Brandvik _______________________________________________ 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
_______________________________________________ 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
