This is how Jon responded (with minor edits from me) off-list:<br>--------<br>
The cosmo file format is simple, it is just a record format/list of
particles: 7 floats and 1 32-bit int per record/particle, no header.<br>
<br>
x1 vx1 y1 vy1 z1 vz1 mass1 tag1<br>
x2 vx2 y2 vy2 z2 vz2 mass2 tag2<br>
x3 vx3 y3 vy3 z3 vz3 mass3 tag3<br>
...<br>
xN vxN yN vyN zN vzN massN tagN<br>
<br>
x y z = particle position (float)<br>
vx vy vz = particle velocity (float)<br>
mass = scalar quantity (float)<br>
tag = unique id (int)<br>
<br>
You can have multiple files as well, as long as the file ends in a number, or ends in a number before the cosmo tag, e.g.:<br>
<br>
file1.cosmo<br>
file2.cosmo<br>
...<br>
fileN.cosmo<br>
<br>
or<br>
<br>
file001<br>
file002<br>
file003<br>
<br>Lastly, the format is binary, not ascii. So 32 bytes per particle, and the size of your file will be N * 32 bytes.<br><font color="#888888">
</font><br>
-Jon<br><br clear="all">David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>28 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-371-3971 x109<br>
<br><br><div class="gmail_quote">On Mon, Nov 1, 2010 at 11:11 AM, Paul Melis <span dir="ltr"><<a href="mailto:paul.melis@sara.nl">paul.melis@sara.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi,<br>
<br>
Is there some documentation on the file format "Cosmology files<br>
(.cosmo)" supported in PV? I've been reading "Analyzing and visualizing<br>
cosmological simulations with paraview" by Woodring <a href="http://et.al" target="_blank">et.al</a>, where the<br>
cosmological support that was added to PV 3.8 is described. The .cosmo<br>
file format is mentioned, but the given reference where it is supposedly<br>
introduced doesn't mention it at all. Reading the parallel .cosmo reader<br>
and related source files doesn't give me a clearer picture either.<br>
<br>
Thanks,<br>
Paul<br>
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