astropy.coordinates.transformations.transform_function(fromsys, tosys, copyobstime=True, priority=1)[source] [edit on github]

A function decorator for defining transformations between coordinate systems.


If decorating a static method of a class, @staticmethod should be added above this decorator.

Parameters :

fromsys : class

The coordinate system this function starts from.

tosys : class

The coordinate system this function results in.

copyobstime : bool

If True (default) the value of the _obstime attribute will be copied to the newly-produced coordinate.

priority : number

The priority if this transform when finding the shortest coordinate tranform path - large numbers are lower priorities.

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