A more analytical approach to cutoff selection is based on the use of the wavelength content graph. In this approach, OmniSurf is rather powerful as it superimposes the filter transmission characteristics on the wavelength content graph. The filter cutoff value can be changed by the user and the wavelength content graph as well as the profiles immediately reflect those changes.The following graphs provide and example of the use of the wavelength content graph in the filter cutoff selection process. In this example, the 0.8 mm cutoff is not recommended as some of the dominant feedrate wavelength is in the waviness profile (shown in red) and in the roughness profile (not shown).