RadialDifferential¶

class
astropy.coordinates.
RadialDifferential
(*args, **kwargs)[source]¶ Bases:
astropy.coordinates.BaseDifferential
Differential(s) of radial distances.
 Parameters
Attributes Summary
Component ‘d_distance’ of the Differential.
Methods Summary
from_cartesian
(other, base)Convert the differential from 3D rectangular cartesian coordinates to the desired class.
from_representation
(representation[, base])Create a new instance of this representation from another one.
to_cartesian
(self, base)Convert the differential to 3D rectangular cartesian coordinates.
Attributes Documentation

attr_classes
= {'d_distance': <class 'astropy.units.quantity.Quantity'>}¶

d_distance
¶ Component ‘d_distance’ of the Differential.
Methods Documentation

classmethod
from_cartesian
(other, base)[source]¶ Convert the differential from 3D rectangular cartesian coordinates to the desired class.
 Parameters
 other :
The object to convert into this differential.
 baseinstance of
self.base_representation
The points for which the differentials are to be converted: each of the components is multiplied by its unit vectors and scale factors.
 Returns
 A new differential object that is this class’ type.

classmethod
from_representation
(representation, base=None)[source]¶ Create a new instance of this representation from another one.
 Parameters
 representation
BaseRepresentation
instance The presentation that should be converted to this class.
 baseinstance of
cls.base_representation
The base relative to which the differentials will be defined. If the representation is a differential itself, the base will be converted to its
base_representation
to help convert it.
 representation

to_cartesian
(self, base)[source]¶ Convert the differential to 3D rectangular cartesian coordinates.
 Parameters
 baseinstance of
self.base_representation
The points for which the differentials are to be converted: each of the components is multiplied by its unit vectors and scale factors.
 baseinstance of
 Returns
 This object as a
CartesianDifferential
 This object as a