UnitSphericalCosLatDifferential

class astropy.coordinates.UnitSphericalCosLatDifferential(d_lon_coslat, d_lat, copy=True)

Bases: astropy.coordinates.BaseSphericalCosLatDifferential

Differential(s) of points on a unit sphere.

Parameters:

d_lon_coslat, d_lat : Quantity

The longitude and latitude of the differentials.

copy : bool, optional

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

Attributes Summary

attr_classes
d_lat	Component ‘d_lat’ of the Differential.
d_lon_coslat	Component ‘d_lon_coslat’ of the Differential.

Methods Summary

from_representation(representation[, base])
represent_as(other_class[, base])	Convert coordinates to another representation.
to_cartesian(base)	Convert the differential to 3D rectangular cartesian coordinates.

Attributes Documentation

attr_classes = OrderedDict([('d_lon_coslat', <class 'astropy.units.quantity.Quantity'>), ('d_lat', <class 'astropy.units.quantity.Quantity'>)])

d_lat

Component ‘d_lat’ of the Differential.

d_lon_coslat

Component ‘d_lon_coslat’ of the Differential.

Methods Documentation

classmethod from_representation(representation, base=None)

represent_as(other_class, base=None)

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.

to_cartesian(base)

Convert the differential to 3D rectangular cartesian coordinates.

Parameters:

base : instance 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:

This object as a CartesianDifferential