from ... import ASTObject
from .frame import ASTFrame
[docs]class ASTCompoundFrame(ASTFrame):
'''
A compound frame is the merging of two existing :class:`ASTFrame` objects.
For example, a compound frame could have celestial coordinates on two axes
and an unrelated coordinate (wavelength, perhaps) on a third.
Knowledge of the relationships between the axes is preserved internally
by the process of constructing the frames which represents them.
'''
pass # no specific behaviour is yet defined for this subclass
#def __init__(self, ast_object=None):