rotate: Rotate
In phonTools: Tools for Phonetic and Acoustic Analyses

Description Usage Arguments Author(s) Examples

Rotate 2D and complex-valued observations. The output is of the same kind as the input.

1	rotate (xy, angle, degrees = FALSE, origin = TRUE)

`xy`	Either, a vector of complex-valued observations, or a matrix with 2 columns and any number of rows.
`angle`	The desired angle of rotation, in radians.
`degrees`	If angle of rotation is specified in degrees instead of radians, this should be set to TRUE.
`origin`	If TRUE, points are rotated about the origin. If FALSE, points are rotated 'in place' about the mean for each dimension (i.e. the central location of the distribution).

Santiago Barreda <sbarreda@ucdavis.edu>

## rotate points in a 2D space 
mat = cbind (1:100, 100:1)
rotate (mat, pi/2)

## rotate complex-valued numbers
complx = complex (real = mat[,1], imaginary = mat[,2])
rotate (complx, pi/2)