>

Profile filters split a profile into large-scale and short-scale com­po­nents.
A profile S-filter removes short-scale components, a profile L-filter removes large-scale com­po­nents.

Nesting index Nic (previously cut-off λc) defines the transition from the rough­ness to waviness.

Mean line is generated with a phase-correct filter by forming a weighted mean value for each point of the pro­file.

Weighting function specifies for each profile point with which weighting factor the adjacent profile points are entered in the mean value formation (Gaussian bell curve).

R-profile (roughness profile) is the deviation of the primary profile from the mean line of the profile S-filter. When displaying the rough­ness profile, the mean line is the datum line.