<div dir="ltr"><div><div><div><div>Hello Raúl<br></div><br></div>I'm not sure how complete the XML implementation is in the XDMF library either. For example, I tried to use XPath to avoid repeating the XML for my mesh geometry at every timestep, but could not get it to work successfully. I ended up having to repeat the writing of the same XML over and over. Perhaps the XDMF library supports XPath, but the ParaView XDMF reader does not?<br>
<br>I've successfully used JOIN as well. But I've never tried WHERE.<br><br>And I think your suggestion of using Fortran style operators like GT,
LT, etc is excellent.<br><br></div>But I'm not even sure who to talk to about implementing such an improvement into XDMF. Can anyone on this list tell us?<br></div><div><br>Cheers<br>Jason<br><div><br><br><br></div></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jun 18, 2013 at 10:21 AM, Raúl de la Cruz <span dir="ltr"><<a href="mailto:delacruz@bsc.es" target="_blank">delacruz@bsc.es</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Paraview users/developers,<br>
<br>
I am generating some output data in Xdmf/HDF5 format which I want to<br>
visualize later with Paraview. I have seen that the current Xdmf support<br>
in Paraview is a bit flawed and is not completed for some complex Xdmf<br>
Entities, eg. DataItem with Functions.<br>
<br>
I have been able to use "JOIN()" function correctly, however "WHERE()"<br>
is causing SegFaults or results are wrong using last Paraview-3.98<br>
version. Furthermore, I have seen that some operators for Function<br>
attribute in Xdmf Attributes are 'nasty'. Let me explain a little bit:<br>
<br>
* "WHERE()" function in Xdmf supports filtering some data if the<br>
sentence given is true. For instance, "WHERE($0 == 10.0)" would show<br>
only those attributes values where the value is equal 10. It also works<br>
with '<' or '>' operators. The point is that '<' and '>' are protected<br>
keywords in Xml and they cannot be used like that in Xdmf files, we have<br>
to use '&lt' and '&gt'. However, these operators don't work neither in<br>
Paraview and a segfault is given.<br>
<br>
I don't know if this is the best place, but my recommendation would be<br>
to use 'EQ', 'NE', 'LT', 'GT' keywords for Function operators (similar<br>
to Fortran ones for instance) instead of the current ones.<br>
<br>
What are the plans about a full support of Xdmf standard?<br>
Anyone has any further experience with this in Paraview? Any help would<br>
be appreciated.<br>
<br>
P.D.: I am attaching the examples if anybody wants to play a little bit<br>
with Xdmf and Function operators in Paraview.<br>
<br>
<br>
Best regards,<br>
Raúl<br>
<br>
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