Sxp (Peak extreme height)

This parameter is the difference of heights at the areal material ratio values p% and q%. The areal material ratio curve is used for the calculation of Sxp.

Sxp represents the difference in the height between the average plane and peaks on the surface after especially high peaks on the surface are removed. By default, it is the height difference between the areal material ratio values 2.5% and 50%.

Find from the parameter list

Height	Sa (arithmetical mean height)
Sz (Maximum height)
Sq (Root mean square height)
Ssk (Skewness)
Sku (Kurtosis)
Sp (Maximum peak height)
Sv (Maximum pit height)
Spatial	Sal (Auto-correlation length) / Str (Texture aspect ratio)
Std* (Texture direction)
Hybrid	Sdq (Root mean square gradient)
Sdr (Developed interfacial area ratio)
Functional	Smr(c) (Areal material ratio)
Smc(mr) (Inverse areal material ratio)
Sk (Core roughness depth)
Spk (Reduced peak height)
Svk (reduced dale height)
Smr (Peak material portion)
Smr2 (Valley material portion (percentage of the measurement area that comprises the deeper valley structures associated with Svk))
Sxp (Peak extreme height)
Functional volume	Vvv (Dale void volume)
Vvc (Core void volume)
Vmp (Peak material volume)
Vmc (Core material volume)
Feature	Spd (Density of peaks)
Spc (Arithmetic mean peak curvature)
S10z / S5p / S5v / Sda(c) / Sha(c) / Sdv(c) / Shv(c)

Height

Sa (arithmetical mean height)

Sz (Maximum height)

Sq (Root mean square height)

Ssk (Skewness)

Sku (Kurtosis)

Sp (Maximum peak height)

Sv (Maximum pit height)

Spatial

Sal (Auto-correlation length) / Str (Texture aspect ratio)

Std* (Texture direction)

Hybrid