UnitSphericalCosLatDifferential¶
- class astropy.coordinates.UnitSphericalCosLatDifferential(d_lon_coslat, d_lat=None, copy=True)[source]¶
Bases:
astropy.coordinates.representation.BaseSphericalCosLatDifferential
Differential(s) of points on a unit sphere.
- Parameters
- d_lon_coslat, d_lat
Quantity
The longitude and latitude of the differentials.
- copybool, optional
If
True
(default), arrays will be copied. IfFalse
, arrays will be references, though possibly broadcast to ensure matching shapes.
- d_lon_coslat, d_lat
Attributes Summary
Component 'd_lat' of the Differential.
Component 'd_lon_coslat' of the Differential.
Methods Summary
from_cartesian
(other, base)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 = {'d_lat': <class 'astropy.units.quantity.Quantity'>, 'd_lon_coslat': <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
- represent_as(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
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
- to_cartesian(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
CartesianDifferential
This object, converted.