Shift

class astropy.modeling.functional_models.Shift(offset=0, **kwargs)

Bases: astropy.modeling.Fittable1DModel

Shift a coordinate.

Parameters:

offset : float

Offset to add to a coordinate.

Attributes Summary

input_units
input_units_allow_dimensionless
input_units_strict
inputs
linear
offset
outputs
param_names

Methods Summary

__call__(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, offset)	One dimensional Shift model function
fit_deriv(x, *params)	One dimensional Shift model derivative with respect to parameter
sum_of_implicit_terms(x)	Evaluate the implicit term (x) of one dimensional Shift model

Attributes Documentation

input_units

input_units_allow_dimensionless = True

input_units_strict = True

inputs = ('x',)

linear = True

offset

outputs = ('x',)

param_names = ('offset',)

Methods Documentation

__call__(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.

static evaluate(x, offset)

One dimensional Shift model function

static fit_deriv(x, *params)

One dimensional Shift model derivative with respect to parameter

static sum_of_implicit_terms(x)

Evaluate the implicit term (x) of one dimensional Shift model