Particle Group

The particle group to calculate the properties for.
Particles

The particle type of the Particle Group to use.
Passive
Vorticity
Liquid
Diffuse
Kernel

Follows
Density

This calculates the particle density of the given particle group (this is NOT a density of matter but only how close particles are located to each other in space).
Iso-Density

This calculates an unnormalized particle isodensity.
Weighted Position

This calculates a weighted position which is required for the anistropic mesher.
Influence Radius

To find particles nearby this radius defines the maximum distance around each particle to find neighboring particles.
If you are using it for a thin sheet algorithm, this radius should be equal to the radius used in the thin sheet algorithm.
Falloff

Defines the falloff kernel. See 'Kernel' for more detailed information.
Gaussion
Poly6
Poly 6 smooth
Viscosity
Spikey
Spikey smooth
Smooth
Sharp
Wyvill
Blinn
Cubic Spline
Polynominal