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mass99 - binary format
mass99 is the binary format used
in the MASS99 (Many-body Astrophysical Simulation Software) package their
N-body codes. It typically only outputs a fraction of the particles used
in the integration, and does not contain velocity information. Instead,
two adjacent snapshots are used to construct velocities. A sample implementation
of converting this format to snapshot(5NEMO)
.
The perl script
quick_tipsy comes with the MASS99 package and used reduce99 to convert
the mass99 file to a standard (ascii) tipsy(5NEMO)
format.
Here’s another
simple recipe to convert a MASS99 file to tipsy format:
% cp some_data.mass99 outfile.0000
% reduce99 input=mass.input tipsy=y
% cp ducky.0000 some_data.tipsy
snapshot(5NEMO), tipsy(5NEMO), quick_tipsy(1MASS99)
http://bima.astro.umd.edu/nemo/mass99/
J. Wallin, S. Antunes, J. Harrell, S. Milder, G. Page, and J. Waltz (2003)
3-feb-03 man written PJT
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