3vel: Three velocities

In lorentz: The Lorentz Transform in Relativistic Physics

Description

Create and test for three-velocities, 3vel objects.

Usage

`3vel`(n)
threevel(n)
as.3vel(x)
is.3vel(x)
## S3 method for class 'vec'
length(x)
## S3 method for class 'vec'
names(x)
## S3 replacement method for class 'vec'
names(x) <- value

Arguments

n	In function 3vel(), number of three velocities to create
x,value	Vectors of three-velocities

Note

Class vel is a virtual class containing classes 3vel and 4vel.

Function threevel() is a convenience wrapper for 3vel().

Author(s)

Robin K. S. Hankin

Examples

U <- r4vel(7)
as.4vel(as.3vel(U)) # equal to U, to numerical precision

x <- as.3vel(1:3/4)
u <- as.3vel(matrix(runif(30)/10,ncol=3))

names(u) <- letters[1:10]

x+u
u+x  # not equal

lorentz documentation built on Oct. 23, 2020, 5:50 p.m.