Scale¶

class
astropy.modeling.functional_models.
Scale
(factor=1, **kwargs)[source]¶ Bases:
astropy.modeling.Fittable1DModel
Multiply a model by a dimensionless factor.
 Parameters
 factorfloat
Factor by which to scale a coordinate.
Notes
If
factor
is aQuantity
then the units will be stripped before the scaling operation.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
__call__
(self, x[, model_set_axis, …])Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.
evaluate
(x, factor)One dimensional Scale model function
fit_deriv
(x, \*params)One dimensional Scale model derivative with respect to parameter
Attributes Documentation

factor
¶

fittable
= True¶

input_units
¶ 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).Model subclasses can also use function annotations in evaluate to indicate valid input units, in which case this property should not be overridden since it will return the input units based on the annotations.

inputs
= ('x',)¶

linear
= True¶

outputs
= ('y',)¶

param_names
= ('factor',)¶
Methods Documentation

__call__
(self, x, model_set_axis=None, with_bounding_box=False, fill_value=nan, equivalencies=None)¶ Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.