Fitter

class astropy.modeling.fitting.Fitter(optimizer, statistic)[source]

Bases: object

Base class for all fitters.

Parameters
optimizercallable

A callable implementing an optimization algorithm

statisticcallable

Statistic function

Methods Summary

__call__(self)

This method performs the actual fitting and modifies the parameter list of a model.

objective_function(self, fps, \*args)

Function to minimize.

Methods Documentation

abstract __call__(self)[source]

This method performs the actual fitting and modifies the parameter list of a model.

Fitter subclasses should implement this method.

objective_function(self, fps, *args)[source]

Function to minimize.

Parameters
fpslist

parameters returned by the fitter

argslist

[model, [other_args], [input coordinates]] other_args may include weights or any other quantities specific for a statistic

Notes

The list of arguments (args) is set in the __call__ method. Fitters may overwrite this method, e.g. when statistic functions require other arguments.