PhysicsSphericalDifferential

class astropy.coordinates.PhysicsSphericalDifferential(d_phi, d_theta, d_r, copy=True)[source] [edit on github]

Bases: astropy.coordinates.BaseDifferential

Differential(s) of 3D spherical coordinates using physics convention.

Parameters:
d_phi, d_theta : Quantity

The differential azimuth and inclination.

d_r : Quantity

The differential radial distance.

copy : bool, 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])
represent_as(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] [edit on github]
represent_as(other_class, base=None)[source] [edit on github]

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.

base : instance 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.