Directional statistics for the 3D case

Source: R/dir_stats_3D.R

Calculates the directional (spherical) statistics of a sample of directional measurements for the 3D case (plane with dip direction and dip angle or line with trend and plunge).

dir_stats_3D(dir, dip, conf.level = 0.95)

Arguments

dir

A vector of dip directions measurements in degrees
dip

A vector of dip angles measurements in degrees
conf.level

Confidence level to use for the cone of confidence (Default is 0.95)

Value

A data frame with the mean direction, mean dip angle, mean resultant length, spherical variance, concentration parameter, and cone of confidence

Details

This always considers a plane expressed as dip direction and dip angle, it could be a bedding plane or a fault plane

References

Borradaile, G. (2003). Statistics of Earth Science Data. Springer.

Examples

dir = c(12,18,22,15,10,20)
dip = c(42,40,48,30,42,30)
dir_stats_3D(dir, dip)

#>   Mean.Dir MeanDip      R  Sph.Var Conc.Param Cone.lower Cone.upper Cone
#> 1     16.2    38.7 0.9918 0.008213      81.17        9.5       22.8 6.68