JointFitter

class astropy.modeling.fitting.JointFitter(models, jointparameters, initvals)

Bases: object

Fit models which share a parameter. For example, fit two gaussians to two data sets but keep the FWHM the same.

Parameters:

modelspython:list

a list of model instances

jointparameterspython:list

a list of joint parameters

initvalspython:list

a list of initial values

Methods Summary

__call__(*args)	Fit data to these models keeping some of the parameters common to the two models.
model_to_fit_params()
objective_function(fps, *args)	Function to minimize.

Methods Documentation

__call__(*args)

Fit data to these models keeping some of the parameters common to the two models.

model_to_fit_params()

objective_function(fps, *args)

Function to minimize.

Parameters:

fpspython:list

the fitted parameters - result of an one iteration of the fitting algorithm

argspython:dict

tuple of measured and input coordinates args is always passed as a tuple from optimize.leastsq