Circular Mean Difference

Usage

circular_mean_difference(x, w = NULL, axial = TRUE, na.rm = TRUE)

circular_mean_difference_alt(x, w = NULL, axial = TRUE, na.rm = TRUE)

Arguments

x: numeric vector. Values in degrees.
w: (optional) Weights. A vector of positive numbers and of the same length as x.
axial: logical. Whether the data are axial, i.e. pi-periodical (TRUE, the default) or directional, i.e. \(2 \pi\)-periodical (FALSE).
na.rm: logical value indicating whether NA values in x should be stripped before the computation proceeds.

Value

numeric

References

Mardia, K.V., and Jupp, P.E (1999). Directional Statistics, Wiley Series in Probability and Statistics. John Wiley & Sons, Inc., Hoboken, NJ, USA. doi:10.1002/9780470316979

Examples

data("san_andreas")
circular_mean_difference(san_andreas$azi)
#> [1] 0.6951742
circular_mean_difference(san_andreas$azi, 1 / san_andreas$unc)
#> [1] 0.5354372

circular_mean_difference_alt(san_andreas$azi)
#> [1] 27.92053
circular_mean_difference_alt(san_andreas$azi, 1 / san_andreas$unc)
#> [1] 21.52921