Rbar: calculate \bar{R}

In geostats: An Introduction to Statistics for Geoscientists

calculate \bar{R}

Description

Given n circular or spherical measurements, the length of their normalised vector sum (\bar{R}) serves as a measure of directional concentration.

Usage

Rbar(trd, plg = 0, option = 0, degrees = FALSE)

Arguments

trd	trend angle, in degrees, between 0 and 360 (if degrees=TRUE) or between 0 and 2π (if degrees=FALSE).
plg	(optional) plunge angle, in degrees, between 0 and 90 (if degrees=TRUE) or between 0 and 2π (if degrees=FALSE).
option	scalar. If option=0, then plg is ignored and the measurements are considered to be circular; if option=1, then trd is the azimuth and plg is the dip; if option=2, then trd is the strike and plg is the dip; if option=3 then trd is the longitude and plg is the latitude.
degrees	TRUE for degrees, FALSE for radians

Value

a value between 0 and 1

Examples

data(striations,package='geostats')
Rbar(striations,degrees=TRUE)

geostats documentation built on Jan. 7, 2023, 5:32 p.m.