Returns a 2x3 affine transformation matrix that translates by (dx, dy)
pixels. To compose transforms, embed into a 3x3 matrix with
rbind(m, c(0, 0, 1))
before multiplying with %*%.
Usage
affine_translate(dx, dy)
Arguments
dx
Numeric. Horizontal shift in pixels (positive = rightward).
dy
Numeric. Vertical shift in pixels (positive = downward).