source: sasview/park_integration/Fitting.py @ 202f93a

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalccostrafo411magnetic_scattrelease-4.1.1release-4.1.2release-4.2.2release_4.0.1ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload
Last change on this file since 202f93a was 4c718654, checked in by Mathieu Doucet <doucetm@…>, 16 years ago

Introduced abstract engine

  • Property mode set to 100644
File size: 2.2 KB
Line 
1"""
2    @organization: Class Fit contains ScipyFit and ParkFit methods declaration
3    allows to create instance of type ScipyFit or ParkFit to perform either
4    a park fit or a scipy fit.
5"""
6from sans.guitools.plottables import Data1D
7from Loader import Load
8from scipy import optimize
9from ScipyFitting import ScipyFit
10from ParkFitting import ParkFit
11
12
13class Fit:
14    """
15        Wrap class that allows to select the fitting type.this class
16        can be used as follow :
17       
18        from sans.fit.Fitting import Fit
19        fitter= Fit()
20        fitter.fit_engine('scipy') or fitter.fit_engine('park')
21        engine = fitter.returnEngine()
22        engine.set_data(data,Uid)
23        engine.set_param( model,model.name, pars)
24        engine.set_model(model,Uid)
25       
26        chisqr1, out1, cov1=engine.fit(pars,qmin,qmax)
27    """ 
28    def __init__(self, engine='scipy'):
29        """
30            self._engine will contain an instance of ScipyFit or ParkFit
31        """
32        self._engine=None
33        self.set_engine(engine)
34         
35    def set_engine(self,word):
36        """
37            Select the type of Fit
38            @param word: the keyword to select the fit type
39            @raise: if the user does not enter 'scipy' or 'park',
40             a valueError is rase
41        """
42        if word=="scipy":
43            self._engine=ScipyFit()
44        elif word=="park":
45            self._engine=ParkFit()
46        else:
47            raise ValueError, "enter the keyword scipy or park"
48    def returnEngine(self):
49        """ @return self._engine""" 
50        return self._engine
51   
52    def fit(self, qmin=None, qmax=None):
53        """Perform the fit """
54        return self._engine.fit(qmin,qmax)
55    def set_model(self,model,name,Uid,pars={}):
56        """ Set model """
57        self._engine.set_model(model,name,Uid, pars)
58    def set_data(self,data,Uid):
59        """ Receive plottable and create a list of data to fit"""
60        self._engine.set_data(data,Uid)
61    def get_model(self,Uid):
62        """ return list of data"""
63        self._engine.get_model(Uid)
64   
65    def remove_Fit_Problem(self,Uid):
66        """remove   fitarrange in Uid"""
67        self._engine.remove_Fit_Problem(Uid)
68
69
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