Table of Contents

**in=***in_file*- Input data are read from
*in_file*, which must be in standard*SnapShot(5)*format [No default]. **times=***range*- Range of times to do the analysis on. E.g.
"0:10,12,13" [default:
**all**]. **exact=t|f**-
**minradfrac=***value\fP*- Fudge factor,
smaller than but not too close to 1, for core-radius determination. A better
algorithm is expected in some future version [default:
**0.1**]. **all=***t|f*- This
overrides all other subsequent logicals (exept
**exact**) who determine what parameters to determine for the system [default:**false**]. **pot=***t|f*- Logical
if to determine energetics (potential en kinetic) of system. This is a
time consuming (N*N) part [default:
**false**]. **eps=***value*- Value of the softening
length for potential energy calculation [default:
**0.025**]. **r_h=***t|f*- Logical
if to determine the fractional mass radii of the system. Currently implemented
it will return radii at which the mass fraction is 10%..90% in steps of 10%
[default:
**false**]. **r_v=***t|f*- Logical if to determine the virial radius of the
system. This is a time consuming (N*N) part [default:
**false**]. **r_c=***t|f*- Logical
if to determine the core radius of the system [default:
**false**]. **rms=***t|f*- Logical
if to determine the full rms velocity dispersion of the system [default:
**false**]. **ecutoff=***value*- Value of the energy above which the particles will
be discarded from a shape analysis. [default:
**0.0**, i.e. only**verbose=**Logical if you need a lot of explanatory text around your numbers. The*t|f**false*option is often used to make tables for further plotting using plotting packages as Mongo(1) [default:**false**]

Shape analysis is a straight moment analysis, and hence perhaps too heavily weighted for particles at large radii.

Keyword **verbose** is not fully implemented yet in V1.3.

~/src/pjt/nbody snapstat.c snapstat.1

9-Jan-87V1.0: createdPJT 24-Jul-87V1.1: cleanup up, doc writtenPJT 10-Nov-87V1.3: output enhancements, improved docPJT 7-jun-88V1.4: new filestructPJT 24-aug-88V1.4a: cleanupPJT