PhysicsSphericalDifferential¶

class
astropy.coordinates.
PhysicsSphericalDifferential
(d_phi, d_theta, d_r, copy=True)[source]¶ Bases:
astropy.coordinates.BaseDifferential
Differential(s) of 3D spherical coordinates using physics convention.
 Parameters
Attributes Summary
Component ‘d_phi’ of the Differential.
Component ‘d_r’ of the Differential.
Component ‘d_theta’ of the Differential.
Methods Summary
from_representation
(representation[, base])Create a new instance of this representation from another one.
represent_as
(self, other_class[, base])Convert coordinates to another representation.
Attributes Documentation

attr_classes
= {'d_phi': <class 'astropy.units.quantity.Quantity'>, 'd_r': <class 'astropy.units.quantity.Quantity'>, 'd_theta': <class 'astropy.units.quantity.Quantity'>}¶

d_phi
¶ Component ‘d_phi’ of the Differential.

d_r
¶ Component ‘d_r’ of the Differential.

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

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

represent_as
(self, other_class, base=None)[source]¶ Convert coordinates to another representation.
If the instance is of the requested class, it is returned unmodified. By default, conversion is done via cartesian coordinates.
 Parameters
 other_class
BaseRepresentation
subclass The type of representation to turn the coordinates into.
 baseinstance of
self.base_representation
, optional Base relative to which the differentials are defined. If the other class is a differential representation, the base will be converted to its
base_representation
.
 other_class