Usage
rotater(x, theta, center = c(0, 0), degrees = FALSE)
Arguments
- x
a 2-column matrix
- theta
angle
- center
point of rotation
- degrees
if TRUE, theta is in degrees instead of radians
Value
a rotated 2-column matrix
Examples
x <- matrix(seq(10), ncol = 2)
rotater(x, pi)
#> [,1] [,2]
#> [1,] -1 -6
#> [2,] -2 -7
#> [3,] -3 -8
#> [4,] -4 -9
#> [5,] -5 -10
