<div dir="ltr"><div><div><div><div>Hi Yvan,<br><br></div>Another option is just to compute it yourself. The reason that the global min and max aren't know in Catalyst is that it requires communication but many times the value isn't needed so in order to make Catalyst more efficient it doesn't compute that value for you automatically. In the Python scripts you can import mpi4py or import vtk and use the vtkMultiProcessController to do the global operation. Note that for my way you'll need to call UpdatePipeline(datadescription.GetTime()) before getting the output and globally determining the value. Then you can set the isosurfaces values array with that information.<br><br></div>If you try this out and have issues, please let us know and we can go from there.<br><br></div>Cheers,<br></div>Andy<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Feb 14, 2017 at 3:02 PM, Joachim Pouderoux <span dir="ltr"><<a href="mailto:joachim.pouderoux@kitware.com" target="_blank">joachim.pouderoux@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div>Hi Yvan,<br><br></div>Regarding MinMax: this filter is indeed not exposed by any standard Catalyst edition but it is<br></div>easy to add. See for instance in ParaView/Catalyst/Editions/<wbr>Extras/manifest.json how the<br></div>PVExtractSelection filter is exposed (line 50 and 247).<br>Just do the same with the MinMax filter (see proxy's declaration at filters.xml:~11725).<br><br></div>Best,<br></div>Joachim<br><div><div><br></div></div></div><div class="gmail_extra"><br clear="all"><div><div class="m_2683324281652720101gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><b>Joachim Pouderoux</b><font size="2">, <font size="1">PhD</font></font><br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><font size="1"><i>Technical Expert - Scientific Computing Team</i></font><br><b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br></blockquote>
</div></div></div></div></div></div></div></div></div><div><div class="h5">
<br><div class="gmail_quote">2017-02-13 17:31 GMT-04:00 Yvan Fournier <span dir="ltr"><<a href="mailto:yvan.fournier@free.fr" target="_blank">yvan.fournier@free.fr</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I'm in the process of migrating some VTK scripts in the Code_Saturne (code-<br>
<a href="http://saturne.org" rel="noreferrer" target="_blank">saturne.org</a>) test suite to Catalyst Python scripts, and am having some<br>
difficulty automating some cases using contour plots:<br>
<br>
For time-dependent data, I do not know the value ranges in advance, and would<br>
like to query them so as to build an Isosurface values array spanning that<br>
range.<br>
<br>
I can manage to access the point and cell data arrays and ther ranges, but<br>
printing the ranges in parallel, it seems I have local values only, while I need<br>
a global range.<br>
<br>
I searched for examples in the documentation, on the Wiki, ..., and found an<br>
example for MinMax, but don't seem to ba able to access the correct type of<br>
Proxy under Catalyst (the default servermanager is not connected in the usual<br>
way.<br>
<br>
For scalar bar color look-up tables, I can manage with<br>
"coprocessor.WriteImages(datad<wbr>escription, rescale_lookuptable=True)" in the<br>
coprocessing script, but for a more general case such as thar needed for contour<br>
plots, I've been running around in circles in the last hours trying to find and<br>
adapt a relevant example.<br>
<br>
Does anyone have a suggestion ? Thanks in advance,<br>
<br>
Yvan Fournier<br>
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