Shift¶
-
class
astropy.modeling.functional_models.
Shift
(offset=0, **kwargs)[source]¶ Bases:
astropy.modeling.Fittable1DModel
Shift a coordinate.
- Parameters
- offsetfloat
Offset to add to a coordinate.
Attributes Summary
This property is used to indicate what units or sets of units the evaluate method expects, and returns a dictionary mapping inputs to units (or
None
if any units are accepted).Methods Summary
evaluate
(x, offset)One dimensional Shift model function
fit_deriv
(x, *params)One dimensional Shift model derivative with respect to parameter
Evaluate the implicit term (x) of one dimensional Shift model
Attributes Documentation
-
input_units
¶
-
linear
= True¶
-
offset
= Parameter('offset', value=0.0)¶
-
param_names
= ('offset',)¶
Methods Documentation