Skip to contents

Ellipsoid class

Source: R/ortensor.R
ellipsoid-class.Rd

In deformation analysis, the quadratic forms of the three-dimensional stretches are represented by the ellipsoid class. It can be used to represents either ellipsoid objects or finite strain ellipsoids.

Usage

is.ellipsoid(object)

as.ellipsoid(object)

Arguments

object

3x3 matrix

Value

is.ellipsoid returns TRUE if x is an "ellipsoid" object, and FALSE otherwise.

as.ellipsoid coerces a 3x3 matrix into an "ellipsoid" object.

See also

ortensor()

Examples

test <- as.ellipsoid(diag(3))
is.ellipsoid(test)
#> [1] TRUE