EllipAxes: Calculate ellipsoid axial lengths based on octahedral shear...

In RockFab: Rock Fabric and Strain Analysis Tools

Calculate ellipsoid axial lengths based on octahedral shear strain and Lode parameter.

Description

Function uses the octahedral shear strain and Lode parameter of a desired strain ellipsoid and returns the normalized axial lengths X Y and Z.

Usage

EllipAxes(es, nu)

Arguments

es	Octahedral shear strain. Values must be positive.
nu	Lode parameter. Values must be between -1 and 1.

Value

A numeric vector of length three with values returned in descending order (i.e. X, Y, and Z)

Note

Not used in RockFab scripts but can be useful for other endeavors.

Author(s)

Jeffrey R. Webber

References

See for example: Ramsay, J. and M. Huber (1993). The techniques of modern structural geology.

Examples

es <- runif(min = 0, max = 3, n = 1)
nu <- runif(min = -1, max = 1, n = 1)

EllipAxes(es = es, nu = nu)

RockFab documentation built on June 23, 2022, 9:11 a.m.