Rotation2D#
- class astropy.modeling.rotations.Rotation2D(angle=Parameter('angle', value=0.0), **kwargs)[source]#
Bases:
Model
Perform a 2D rotation given an angle.
Positive angles represent a counter-clockwise rotation and vice-versa.
- Parameters:
- angle
python:float
orQuantity
[:ref: ‘angle’] Angle of rotation (if float it should be in deg).
- angle
Attributes Summary
Names of the parameters that describe models of this type.
Methods Summary
Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.
evaluate
(x, y, angle)Rotate (x, y) about
angle
.Attributes Documentation
- angle = Parameter('angle', value=0.0)#
- n_inputs = 2#
- n_outputs = 2#
- param_names = ('angle',)#
Names of the parameters that describe models of this type.
The parameters in this tuple are in the same order they should be passed in when initializing a model of a specific type. Some types of models, such as polynomial models, have a different number of parameters depending on some other property of the model, such as the degree.
When defining a custom model class the value of this attribute is automatically set by the
Parameter
attributes defined in the class body.
Methods Documentation
- __call__()#
Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.
- classmethod evaluate(x, y, angle)[source]#
Rotate (x, y) about
angle
.- Parameters:
- x, ynumpy:array_like
Input quantities
- angle
python:float
orQuantity
[:ref: ‘angle’] Angle of rotations. If float, assumed in degrees.