imager (version 0.14)

rotate_xy: Rotate image by an arbitrary angle, around a center point.

Description

Rotate image by an arbitrary angle, around a center point.

Usage

rotate_xy(im, angle, cx, cy, zoom = 1, interpolation = 1L,
  boundary_conditions = 0L)

Arguments

im

an image

angle

Rotation angle, in degrees.

cx

X-coordinate of the rotation center.

cy

Y-coordinate of the rotation center.

zoom

Zoom factor.

interpolation

Interpolation type. 0=nearest | 1=linear | 2=cubic

boundary_conditions

Boundary conditions. 0=dirichlet | 1=neumann | 2=periodic

Examples

rotate_xy(boats,30,200,400) %>% plot
rotate_xy(boats,30,200,400,boundary=2) %>% plot