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- Astropy v1.1.1 »
- Astronomical Coordinate Systems (`astropy.coordinates`) »
- RepresentationMapping

# RepresentationMapping

class `astropy.coordinates.``RepresentationMapping`

  Bases: `astropy.coordinates.RepresentationMapping`

  This `namedtuple` is used with the `frame_specific_representation_info` attribute to tell frames what attribute names (and default units) to use for a particular representation. `reprname` and `framename` should be strings, while `defaultunit` can be either an astropy unit, the string `'recommended'` (to use whatever the representation’s `recommended_units` is), or None (to indicate that no unit mapping should be done).