Table of Contents

**snaperror** performs various potential and force error statistics where
an analytical form is known (assumed).
**snaperror** [parameter=value]
This program is really meant for special spherical potentials
where an analytical form of the density (and potential and force) is also
known, so the errors can be computed both via the analytical and direct
summation method. See also *TestGrav(1falcON)*
.
This program was never finished,
use *snappot(1NEMO)*
instead.

The following parameters are recognized
in any order if the keyword is also given:
**in=**
- Input file (snapshot) [???]
**model=**
- Dehnen’s MOD number (0=hom.sphere / 1=Plummer /2=gamma-model /
3=Kuzmin disk / 4=hom. disk) [0]
**gamma=**
- Parameter of model (if any) [1]

- Homogenous sphere of mass 1, radius 1
- Plummer sphere, mass 1, scale-length
1
- Gamma model, free parameter
**gamma** - Kuzmin disk, mass 1, radius 1
- Homogenenous
disk, mass 1, radius 1

snappot(1NEMO)
, hackforce(1NEMO)
,
TestGrav(1falcON)
src/nbody/reduc
Peter Teuben

24-Mar-05` ` ` ` V0.1 Created` ` ` ` PJT

**Table of Contents**