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snapshift - shifts the phase space coordinates of an N-body system
snapshift
in=snap_in out=snap_out [parameter=value]
This program shifts
the coordinates of all the particles in phase space. Position and velocity
are treated separately however.
Note: The shifted coordinates is added
to the existing coordinates unless the mode keyword is set to add
The
following parameters are recognized in any order if the keyword is also
given:
- in=in-file
- input file, in snapshot(5NEMO)
format [no default]
- out=out_file
- output file, in snapshot(5NEMO)
format [no default]
- rshift=x,y,z
- The shift
in position space [default: 0,0,0].
- vshift=u,v,w
- The shift in velocity space
[default: 0,0,0].
- times=time-ranges
- Only snapshots with time values within
times-ranges, which is of the form ts[:te],..., will be copied. [default: all].
- mode=add|+|sub|-
- Shift mode, if the shifted coordinates are to be added (+)
or subtracted (-) to the particles coordinates. [Default: add].
snapstack(1NEMO)
,
snapadd(1NEMO)
, snapshot(5NEMO)
Peter Teuben
~/src/pjt/nbody snapshift.c snapshift.1
24-Apr-87 V1.0: created PJT
5-May-87 V1.1: checks and copies almost all Tag’s and snapshots PJT
9-Mar-88 V1.2: data history added + debug output PJT
6-jun-88 V2.0: new filestruct PJT
25-may-90 V2.3: added mode keyword PJT
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