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uns_stack - superimpose two UNS N-body snapshots
uns_stack in1=in_file1
in2=in_file2 out=out_file [parameter=value] ...
uns_stack reads
in two UNS N-body systems and outputs one containing particles from both.
It may be used to set up collisions by specifying offsets in position
and velocity space.
If more than two snapshots need to be stacked, multiple
runs of uns_stack. would be needed
The following parameters are
recognized.
- in1=in_file1
- in2=in_file2
- Input data will be read from these
files, which must be in UNS format (currently Nemo and Gadget2 are supported).
Only the first frames are used. Both input snapshot must have the same
file format.
Default: required.
- out=out_file
- Output data will be written
to out_file. The out file format will be the same as input file format.
- deltar=rel_position
- Relative position of first snapshot w.r.t. second. Default: 0.0,0.0,0.0.
- deltav=rel_velocity
- Relative velocity of first snapshot w.r.t. second. Default: 0.0,0.0,0.0.
- shift=1|2
- Shift system1 or system2? If the final system is shifted with center of
mass moved to the center, this option is not relevant anymore. Default:
1.
- zerocm=zero_cm_flag
- If true, translate to center of mass before output.
Default: false.
- verbose=flag
- If true, give some verbose output. Default:
True.
snapstack(1NEMO)
, snapadd(1NEMO)
, snapshot(5NEMO)
- Jean-Charles
LAMBERT
02-Apr-10 V1.0 created JCL
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