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snapmnmx - show statistics of snapshot variables, optionally output
a single min or max particle
snapmnmx in=snap_in [parameter=value]
snapmnmx produces a table of a number of selected statistics
of requested quantities of the bodies in a snapshot. It can also add the
selected times to the table.
A special case where out= is given, and either
just the min or max was selected of the variable will cause this particle
to be output in a single particle snapshot.
The following parameters
are recognized in order; they may be given in any order if the keyword
is also given. Use --help to confirm this man page is up to date.
- Input file, in snapshot(5NEMO)
format [no default].
- List of
data-items for which statistics will be output; any of the bodytrans(3NEM0)
functions can be used in an arbitry expression. The order in the table is
the order of the variables given within this keyword, within each selected
mode (see next keyword). [default: x,y,z].
- List modes of output,
which can be combined. Valid options are: time, min, max, mean and sigma.
Multiple options must be separated by a comma. The columns are printed
in the order of the list above. However, the var= is the ‘‘fastest’’ variable
of this two dimensional matrix. Example: with the defaults (mode=min,max
and var=x,y,z) the program would print xmin, ymin, zmin, xmax, ymax, xmax.
- Time values/intervals of which snapshots
should be used. [default: all]
- Format string (in the
C language notation) of the output numbers. If no space is used in the format
description, the program will add one for you. [default: %g (free format)].
- If give, this will be the output file of the particle for which the
min or max was selected. Only a single particle can be output here.
# make a Plummer sphere with 100 particles and given seed
mkplummer p100 100 seed=123
# find the min x,y,z and max x,y,z; the bounding box of this model
-4.67407 -3.82852 -2.03958 4.78748 2.74591 5.57043
# write the particle with min x to a file; it’s the 10th particle
snapmnmx p100 x min out=p100.xmin
# show the x,y,z,vx,vy,vz for this particle with min x
-4.67407 1.09453 0.180351 -0.125468 -0.137605 -0.16439
See Alsosnapstat(1NEMO), snaprstat(1NEMO) AuthorPeter Teuben Files
16-Apr-91 V1.0: created PJT
13-may-91 V1.1: added time to mode, added more doc PJT
8-nov-93 V1.2: using moment.h PJT
17-aug-2022 V1.3: added out= PJT
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