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
d_phi, d_thetaQuantity

The differential azimuth and inclination.

d_rQuantity

The differential radial distance.

copybool, optional

If True (default), arrays will be copied rather than referenced.

Attributes Summary

attr_classes

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 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
representationBaseRepresentation 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.

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_classBaseRepresentation 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.