def rotate(cls,angle):
"""
rotates the camera coordinates about the center of the camera by
specified angle. Modifies the CameraGeometry in-place (so
after this is called, the pix_x and pix_y arrays are
rotated).
Note:
-----
This is intended only to correct simulated data that are
rotated by a fixed angle. For the more general case of
correction for camera pointing errors (rotations,
translations, skews, etc), you should use a true coordinate
transformation defined in `ctapipe.coordinates`.
Parameters
----------
cls: give the name of the class whose pixel positions should be rotated
angle: value convertable to an `astropy.coordinates.Angle`
rotation angle with unit (e.g. 12 * u.deg), or "12d"
"""
cls.pix_posX, cls.pix_posY = CD.rotate(cls.pix_posX,cls.pix_posY,angle)
