fitting.py @ 3658abed

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 3658abed was 3658abed, checked in by Gervaise Alina <gervyh@…>, 14 years ago
make fitting plugin_inheriting from pluginbase
Property mode set to `100644`
File size: 54.6 KB

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2
3	################################################################################
4	#This software was developed by the University of Tennessee as part of the
5	#Distributed Data Analysis of Neutron Scattering Experiments (DANSE)
6	#project funded by the US National Science Foundation.
7	#
8	#See the license text in license.txt
9	#
10	#copyright 2009, University of Tennessee
11	################################################################################
12
13
14	import re
15	import sys
16	import wx
17	import logging
18	import numpy
19	import math
20	import string
21	import time
22	import thread
23	from copy import deepcopy
24
25	import models
26	import fitpage
27
28	from DataLoader.loader import Loader
29
30	from sans.guiframe.dataFitting import Data2D
31	from sans.guiframe.dataFitting import Data1D
32	from sans.guiframe.dataFitting import Theory1D
33
34	from sans.guicomm.events import NewPlotEvent, StatusEvent
35	from sans.guicomm.events import EVT_SLICER_PANEL,ERR_DATA,EVT_REMOVE_DATA
36	from sans.guicomm.events import EVT_SLICER_PARS_UPDATE
37	from sans.guicomm.events import EVT_FITSTATE_UPDATE
38
39	from sans.fit.AbstractFitEngine import Model
40	from sans.fit.AbstractFitEngine import FitAbort
41	from console import ConsoleUpdate
42
43	from fitproblem import FitProblem
44	from fitpanel import FitPanel
45	from fit_thread import FitThread
46	from pagestate import Reader
47
48	DEFAULT_BEAM = 0.005
49	DEFAULT_QMIN = 0.001
50	DEFAULT_QMAX = 0.13
51	DEFAULT_NPTS = 50
52
53	(PageInfoEvent, EVT_PAGE_INFO) = wx.lib.newevent.NewEvent()
54	#(FitStateUpdateEvent, EVT_STATE_UPDATE) = wx.lib.newevent.NewEvent()
55	from fitpage import Chi2UpdateEvent
56
57
58	class PlotInfo:
59	"""
60	store some plotting field
61	"""
62	_xunit = 'A^{-1}'
63	_xaxis= "\\rm{Q}"
64	_yunit = "cm^{-1}"
65	_yaxis= "\\rm{Intensity} "
66	id = "Model"
67	group_id = "Model"
68	title= None
69	info= None
70
71	from sans.guiframe.plugin_base import PluginBase
72
73	class Plugin(PluginBase):
74	"""
75	Fitting plugin is used to perform fit
76	"""
77	def __init__(self, standalone=False):
78	PluginBase.__init__(self, name="Fitting", standalone=standalone)
79
80	#Provide list of models existing in the application
81	self.menu_mng = models.ModelManager()
82
83	#list of panel to send to guiframe
84	self.mypanels = []
85	# reference to the current running thread
86	self.calc_2D = None
87	self.calc_1D = None
88	self.calc_fit = None
89
90	# Start with a good default
91	self.elapsed = 0.022
92	# the type of optimizer selected, park or scipy
93	self.fitter = None
94	#let fit ready
95	self.fitproblem_count = None
96	#Flag to let the plug-in know that it is running stand alone
97	self.standalone = True
98	## dictionary of page closed and id
99	self.closed_page_dict = {}
100	## Fit engine
101	self._fit_engine = 'scipy'
102	#List of selected data
103	self.selected_data_list = []
104	## list of slicer panel created to display slicer parameters and results
105	self.slicer_panels = []
106	# model 2D view
107	self.model2D_id = None
108	#keep reference of the simultaneous fit page
109	self.sim_page = None
110	#dictionary containing data name and error on dy of that data
111	self.err_dy = {}
112	self.theory_data = None
113	#Create a reader for fit page's state
114	self.state_reader = None
115	self.temp_state = []
116	self.state_index = 0
117	self.sfile_ext = None
118	# Log startup
119	logging.info("Fitting plug-in started")
120
121	def populate_menu(self, id, owner):
122	"""
123	Create a menu for the Fitting plug-in
124
125	:param id: id to create a menu
126	:param owner: owner of menu
127
128	:return: list of information to populate the main menu
129
130	"""
131	#Menu for fitting
132	self.menu1 = wx.Menu()
133
134	#Set park engine
135	id3 = wx.NewId()
136	scipy_help= "Scipy Engine: Perform Simple fit. More in Help window...."
137	self.menu1.AppendCheckItem(id3, "Simple Fit [Scipy]",scipy_help)
138	wx.EVT_MENU(owner, id3, self._onset_engine_scipy)
139
140	id3 = wx.NewId()
141	park_help = "Park Engine: Perform Complex fit. More in Help window...."
142	self.menu1.AppendCheckItem(id3, "Complex Fit [Park]",park_help)
143	wx.EVT_MENU(owner, id3, self._onset_engine_park)
144
145	self.menu1.FindItemByPosition(0).Check(True)
146	self.menu1.FindItemByPosition(1).Check(False)
147
148	self.menu1.AppendSeparator()
149	id1 = wx.NewId()
150	simul_help = "Allow to edit fit engine with multiple model and data"
151	self.menu1.Append(id1, '&Simultaneous Page',simul_help)
152	wx.EVT_MENU(owner, id1, self.on_add_sim_page)
153
154	#menu for model
155	menu2 = wx.Menu()
156	self.menu_mng.populate_menu(menu2, owner)
157	id2 = wx.NewId()
158	owner.Bind(models.EVT_MODEL,self._on_model_menu)
159
160	self.fit_panel.set_owner(owner)
161	self.fit_panel.set_model_list(self.menu_mng.get_model_list())
162
163	#create menubar items
164	return [(id, self.menu1, "Fitting")]
165
166	def on_add_sim_page(self, event):
167	"""
168	Create a page to access simultaneous fit option
169	"""
170	Plugin.on_perspective(self,event=event)
171	if self.sim_page !=None:
172	msg= "Simultaneous Fit page already opened"
173	wx.PostEvent(self.parent, StatusEvent(status= msg))
174	return
175
176	self.sim_page= self.fit_panel.add_sim_page()
177
178	def help(self, evt):
179	"""
180	Show a general help dialog.
181	"""
182
183	from help_panel import HelpWindow
184	frame = HelpWindow(None, -1, 'HelpWindow')
185	frame.Show(True)
186
187	def get_context_menu(self, graph=None):
188	"""
189	Get the context menu items available for P(r).them allow fitting option
190	for Data2D and Data1D only.
191
192	:param graph: the Graph object to which we attach the context menu
193
194	:return: a list of menu items with call-back function
195
196	:note: if Data1D was generated from Theory1D
197	the fitting option is not allowed
198
199	"""
200	self.graph = graph
201	fit_option = "Select data for fitting"
202	fit_hint = "Dialog with fitting parameters "
203
204	for item in graph.plottables:
205	if item.__class__.__name__ is "Data2D":
206
207	if hasattr(item,"is_data"):
208	if item.is_data:
209	return [[fit_option, fit_hint, self._onSelect]]
210	else:
211	return []
212	return [[fit_option, fit_hint, self._onSelect]]
213	else:
214	if item.name == graph.selected_plottable :
215	if item.name in ["$I_{obs}(q)$","$I_{fit}(q)$","$P_{fit}(r)$"]:
216	return []
217	if hasattr(item, "group_id"):
218	# if is_data is true , this in an actual data loaded
219	#else it is a data created from a theory model
220	if hasattr(item,"is_data"):
221	if item.is_data:
222	return [[fit_option, fit_hint,
223	self._onSelect]]
224	else:
225	return []
226	else:
227	return [[fit_option, fit_hint, self._onSelect]]
228	return []
229
230
231	def get_panels(self, parent):
232	"""
233	Create and return a list of panel objects
234	"""
235	self.parent = parent
236	self.parent.Bind(EVT_FITSTATE_UPDATE, self.on_set_state_helper)
237	# Creation of the fit panel
238	self.fit_panel = FitPanel(self.parent, -1)
239	#Set the manager for the main panel
240	self.fit_panel.set_manager(self)
241	# List of windows used for the perspective
242	self.perspective = []
243	self.perspective.append(self.fit_panel.window_name)
244	# take care of saving data, model and page associated with each other
245	self.page_finder = {}
246	#index number to create random model name
247	self.index_model = 0
248	self.index_theory= 0
249	self.parent.Bind(EVT_SLICER_PANEL, self._on_slicer_event)
250	self.parent.Bind(ERR_DATA, self._on_data_error)
251	self.parent.Bind(EVT_REMOVE_DATA, self._closed_fitpage)
252	self.parent.Bind(EVT_SLICER_PARS_UPDATE, self._onEVT_SLICER_PANEL)
253	self.parent._mgr.Bind(wx.aui.EVT_AUI_PANE_CLOSE,self._onclearslicer)
254	#Create reader when fitting panel are created
255	self.state_reader = Reader(self.set_state)
256	#append that reader to list of available reader
257	loader = Loader()
258	loader.associate_file_reader(".fitv", self.state_reader)
259	loader.associate_file_reader(".svs", self.state_reader)
260
261	#Send the fitting panel to guiframe
262	self.mypanels.append(self.fit_panel)
263	return self.mypanels
264
265	def set_default_perspective(self):
266	"""
267	Call back method that True to notify the parent that the current plug-in
268	can be set as default perspective.
269	when returning False, the plug-in is not candidate for an automatic
270	default perspective setting
271	"""
272	return True
273
274	def set_state(self, state=None, datainfo=None, format=None):
275	"""
276	Call-back method for the fit page state reader.
277	This method is called when a .fitv/.svs file is loaded.
278
279	: param state: PageState object
280	: param datainfo: data
281	"""
282	if state != None:
283	# store fitting state in temp_state
284	self.temp_state.append(state)
285	else:
286	self.temp_state = []
287	# index to start with for a new set_state
288	self.state_index = 0
289	# state file format
290	self.sfile_ext = format
291
292	def on_set_state_helper(self,event=None):
293	"""
294	Set_state_helper. This actually sets state after plotting data from state file.
295
296	: event: FitStateUpdateEvent called by dataloader.plot_data from guiframe
297	"""
298	if len(self.temp_state) == 0:
299	if self.state_index==0 and len(self.mypanels) <= 0 and self.sfile_ext =='.svs':
300	self.fit_panel.add_default_pages()
301	self.temp_state = []
302	self.state_index = 0
303	return
304
305	try:
306	# Load fitting state
307	state = self.temp_state[self.state_index]
308	#panel state should have model selection to set_state
309	if state.formfactorcombobox != None:
310	#set state
311	page = self.fit_panel.set_state(state)
312	else:
313	#just set data because set_state won't work
314	page_info = self.fit_panel.get_page_info(data=state.data)
315	panel = self.fit_panel.add_page(page_info)
316	self.store_page(page=panel, data=state.data)
317	self.mypanels.append(panel)
318
319	# get ready for the next set_state
320	self.state_index += 1
321
322	#reset state variables to default when all set_state is finished.
323	if len(self.temp_state) == self.state_index:
324
325	self.temp_state = []
326	#self.state_index = 0
327	# Make sure the user sees the fitting panel after loading
328	self.parent.set_perspective(self.perspective)
329	except:
330	self.state_index==0
331	self.temp_state = []
332	raise
333
334	def save_fit_state(self, filepath, fitstate):
335	"""
336	save fit page state into file
337	"""
338	self.state_reader.write(filename=filepath, fitstate=fitstate)
339
340	def copy_data(self, item, dy=None):
341	"""
342	receive a data 1D and the list of errors on dy
343	and create a new data1D data
344
345	"""
346	id = None
347	if hasattr(item,"id"):
348	id = item.id
349
350	data= Data1D(x=item.x, y=item.y,dx=None, dy=None)
351	data.copy_from_datainfo(item)
352	item.clone_without_data(clone=data)
353	data.dy = deepcopy(dy)
354	data.name = item.name
355	## allow to highlight data when plotted
356	data.interactive = deepcopy(item.interactive)
357	## when 2 data have the same id override the 1 st plotted
358	data.id = id
359	data.group_id = item.group_id
360	return data
361
362	def set_fit_range(self, page, qmin, qmax):
363	"""
364	Set the fitting range of a given page
365	"""
366	if page in self.page_finder.iterkeys():
367	fitproblem= self.page_finder[page]
368	fitproblem.set_range(qmin= qmin, qmax= qmax)
369
370	def schedule_for_fit(self,value=0,page=None,fitproblem =None):
371	"""
372	Set the fit problem field to 0 or 1 to schedule that problem to fit.
373	Schedule the specified fitproblem or get the fit problem related to
374	the current page and set value.
375
376	:param value: integer 0 or 1
377	:param fitproblem: fitproblem to schedule or not to fit
378
379	"""
380	if fitproblem !=None:
381	fitproblem.schedule_tofit(value)
382	else:
383	if page in self.page_finder.iterkeys():
384	fitproblem= self.page_finder[page]
385	fitproblem.schedule_tofit(value)
386
387	def get_page_finder(self):
388	"""
389	return self.page_finder used also by simfitpage.py
390	"""
391	return self.page_finder
392
393	def set_page_finder(self,modelname,names,values):
394	"""
395	Used by simfitpage.py to reset a parameter given the string constrainst.
396
397	:param modelname: the name ot the model for with the parameter has to reset
398	:param value: can be a string in this case.
399	:param names: the paramter name
400
401	:note: expecting park used for fit.
402
403	"""
404	sim_page= self.sim_page
405	for page, value in self.page_finder.iteritems():
406	if page != sim_page:
407	list=value.get_model()
408	model = list[0]
409	if model.name== modelname:
410	value.set_model_param(names,values)
411	break
412
413	def split_string(self,item):
414	"""
415	receive a word containing dot and split it. used to split parameterset
416	name into model name and parameter name example: ::
417
418	paramaterset (item) = M1.A
419	Will return model_name = M1 , parameter name = A
420
421	"""
422	if string.find(item,".")!=-1:
423	param_names= re.split("\.",item)
424	model_name=param_names[0]
425	##Assume max len is 3; eg., M0.radius.width
426	if len(param_names) == 3:
427	param_name=param_names[1]+"."+param_names[2]
428	else:
429	param_name=param_names[1]
430	return model_name,param_name
431
432	def stop_fit(self):
433	"""
434	Stop the fit engine
435	"""
436	if self.calc_fit!= None and self.calc_fit.isrunning():
437	self.calc_fit.stop()
438	wx.PostEvent(self.parent, StatusEvent(status="Fitting \
439	is cancelled" , type="stop"))
440
441	def set_smearer_nodraw(self,smearer, qmin=None, qmax=None):
442	"""
443	Get a smear object and store it to a fit problem
444
445	:param smearer: smear object to allow smearing data
446
447	"""
448	self.current_pg=self.fit_panel.get_current_page()
449	self.page_finder[self.current_pg].set_smearer(smearer)
450	## draw model 1D with smeared data
451	data = self.page_finder[self.current_pg].get_fit_data()
452	model = self.page_finder[self.current_pg].get_model()
453	## if user has already selected a model to plot
454	## redraw the model with data smeared
455	smear =self.page_finder[self.current_pg].get_smearer()
456
457	def set_smearer(self,smearer, qmin=None, qmax=None):
458	"""
459	Get a smear object and store it to a fit problem
460
461	:param smearer: smear object to allow smearing data
462
463	"""
464	self.current_pg=self.fit_panel.get_current_page()
465	self.page_finder[self.current_pg].set_smearer(smearer)
466	## draw model 1D with smeared data
467	data = self.page_finder[self.current_pg].get_fit_data()
468	model = self.page_finder[self.current_pg].get_model()
469	## if user has already selected a model to plot
470	## redraw the model with data smeared
471
472	smear = self.page_finder[self.current_pg].get_smearer()
473	if model != None:
474	self.draw_model(model=model, data=data, smearer=smear,
475	qmin=qmin, qmax=qmax)
476
477	def draw_model(self, model, data=None, smearer=None,
478	enable1D=True, enable2D=False,
479	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep=DEFAULT_NPTS):
480	"""
481	Draw model.
482
483	:param model: the model to draw
484	:param name: the name of the model to draw
485	:param data: the data on which the model is based to be drawn
486	:param description: model's description
487	:param enable1D: if true enable drawing model 1D
488	:param enable2D: if true enable drawing model 2D
489	:param qmin: Range's minimum value to draw model
490	:param qmax: Range's maximum value to draw model
491	:param qstep: number of step to divide the x and y-axis
492
493	"""
494	if data.__class__.__name__ != "Data2D":
495	## draw model 1D with no loaded data
496	self._draw_model1D(model=model,
497	data=data,
498	enable1D=enable1D,
499	smearer=smearer,
500	qmin=qmin,
501	qmax=qmax,
502	qstep=qstep)
503	else:
504	## draw model 2D with no initial data
505	self._draw_model2D(model=model,
506	data=data,
507	enable2D=enable2D,
508	smearer=smearer,
509	qmin=qmin,
510	qmax=qmax,
511	qstep=qstep)
512
513	def onFit(self):
514	"""
515	perform fit
516	"""
517	## count the number of fitproblem schedule to fit
518	fitproblem_count = 0
519	for value in self.page_finder.itervalues():
520	if value.get_scheduled() == 1:
521	fitproblem_count += 1
522
523	## if simultaneous fit change automatically the engine to park
524	if fitproblem_count > 1:
525	self._on_change_engine(engine='park')
526
527	self.fitproblem_count = fitproblem_count
528
529	from sans.fit.Fitting import Fit
530	self.fitter = Fit(self._fit_engine)
531
532	if self._fit_engine == "park":
533	engineType = "Simultaneous Fit"
534	else:
535	engineType = "Single Fit"
536
537	fproblemId = 0
538	self.current_pg = None
539	for page, value in self.page_finder.iteritems():
540	try:
541	if value.get_scheduled() == 1:
542	#Get list of parameters name to fit
543	pars = []
544	templist = []
545	templist = page.get_param_list()
546	for element in templist:
547	name = str(element[1])
548	pars.append(name)
549	#Set Engine (model , data) related to the page on
550	self._fit_helper(value=value, pars=pars,
551	id=fproblemId, title=engineType)
552	fproblemId += 1
553	self.current_pg = page
554	except:
555	msg= "%s error: %s" % (engineType, sys.exc_value)
556	wx.PostEvent(self.parent, StatusEvent(status=msg, info="error",
557	type="stop"))
558	return
559	## If a thread is already started, stop it
560	#if self.calc_fit!= None and self.calc_fit.isrunning():
561	# self.calc_fit.stop()
562	#Handler used for park engine displayed message
563	handler = ConsoleUpdate(parent=self.parent,improvement_delta=0.1)
564	## perform single fit
565	if fitproblem_count == 1:
566	calc_fit = FitThread(parent=self.parent,
567	handler = handler,
568	fn=self.fitter,
569	cpage=self.current_pg,
570	pars=pars,
571	updatefn=handler.update_fit,
572	completefn=self._single_fit_completed)
573	else:
574	## Perform more than 1 fit at the time
575	calc_fit = FitThread(parent=self.parent,
576	handler=handler,
577	fn= self.fitter,
578	completefn= self._simul_fit_completed,
579	updatefn=handler.update_fit)
580
581	calc_fit.queue()
582	self.ready_fit(calc_fit=calc_fit)
583
584	def ready_fit(self, calc_fit):
585	"""
586	Ready for another fit
587	"""
588	if self.fitproblem_count != None and self.fitproblem_count > 1:
589	calc_fit.ready(2.5)
590
591	else:
592	time.sleep(0.4)
593
594	def remove_plot(self, page, theory=False):
595	"""
596	remove model plot when a fit page is closed
597	"""
598	fitproblem = self.page_finder[page]
599	data = fitproblem.get_fit_data()
600	model = fitproblem.get_model()
601	if model is not None:
602	name = model.name
603	new_plot = Theory1D(x=[], y=[], dy=None)
604	new_plot.name = name
605	new_plot.xaxis(data._xaxis, data._xunit)
606	new_plot.yaxis(data._yaxis, data._yunit)
607	new_plot.group_id = data.group_id
608	new_plot.id = data.id + name
609	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot, title=data.name))
610	if theory:
611	new_plot_data = Data1D(x=[], y=[], dx=None, dy=None)
612	new_plot_data.name = data.name
613	new_plot_data.xaxis(data._xaxis, data._xunit)
614	new_plot_data.yaxis(data._yaxis, data._yunit)
615	new_plot_data.group_id = data.group_id
616	new_plot_data.id = data.id
617	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot_data,
618	title=data.name))
619	def create_fittable_data2D(self, data):
620	"""
621	check if the current data is a data 2d and add dy to that data
622
623	:return: Data2D
624
625	"""
626	if data.__class__.__name__ != "Data2D":
627	raise ValueError, " create_fittable_data2D expects a Data2D"
628	## Data2D case
629	new_data = deepcopy(data)
630	if not hasattr(data, "is_data"):
631	new_data.group_id += "data2D"
632	new_data.id +="data2D"
633	new_data.is_data = False
634	title = new_data.name
635	title += " Fit"
636	wx.PostEvent(self.parent, NewPlotEvent(plot=new_data,
637	title=str(title)))
638	else:
639	new_data.is_data = True
640	return new_data
641
642	def create_fittable_data1D(self, data):
643	"""
644	check if the current data is a theory 1d and add dy to that data
645
646	:return: Data1D
647
648	"""
649	class_name = data.__class__.__name__
650	if not class_name in ["Data1D", "Theory1D"]:
651	raise ValueError, "create_fittable_data1D expects Data1D"
652
653	#get the appropriate dy
654	dy = deepcopy(data.dy)
655	if len(self.err_dy) > 0:
656	if data.name in self.err_dy.iterkeys():
657	dy = self.err_dy[data.name]
658	if data.__class__.__name__ == "Theory1D":
659	new_data = self.copy_data(data, dy)
660	new_data.group_id = str(new_data.group_id)+"data1D"
661	new_data.id = str(new_data.id)+"data1D"
662	new_data.is_data = False
663	title = new_data.name
664	title = 'Data created from Theory'
665	wx.PostEvent(self.parent, NewPlotEvent(plot=new_data,
666	title=str(title),
667	reset=True))
668	else:
669	new_data = self.copy_data(data, dy)
670	new_data.id = data.id
671	new_data.is_data = True
672	return new_data
673
674	def store_page(self, page, data):
675	"""
676	Helper to save page reference into the plug-in
677
678	:param page: page to store
679
680	"""
681	page.set_data(data)
682	#create a fitproblem storing all link to data,model,page creation
683	if not page in self.page_finder.keys():
684	self.page_finder[page] = FitProblem()
685	self.page_finder[page].add_fit_data(data)
686
687	def add_fit_page(self, data):
688	"""
689	given a data, ask to the fitting panel to create a new fitting page,
690	get this page and store it into the page_finder of this plug-in
691	"""
692	try:
693	page = self.fit_panel.add_fit_page(data)
694
695	# add data associated to the page created
696	if page != None:
697	self.store_page(page=page, data=data)
698	wx.PostEvent(self.parent, StatusEvent(status="Page Created",
699	info="info"))
700	else:
701	msg = "Page was already Created"
702	wx.PostEvent(self.parent, StatusEvent(status=msg, info="warning"))
703	except:
704	msg = "Creating Fit page: %s"%sys.exc_value
705	wx.PostEvent(self.parent, StatusEvent(status=msg, info="error"))
706
707	def _onEVT_SLICER_PANEL(self, event):
708	"""
709	receive and event telling to update a panel with a name starting with
710	event.panel_name. this method update slicer panel for a given interactor.
711
712	:param event: contains type of slicer , paramaters for updating the panel
713	and panel_name to find the slicer 's panel concerned.
714	"""
715	for item in self.parent.panels:
716	if self.parent.panels[item].window_caption.startswith(event.panel_name):
717	self.parent.panels[item].set_slicer(event.type, event.params)
718
719	self.parent._mgr.Update()
720
721	def _closed_fitpage(self, event):
722	"""
723	request fitpanel to close a given page when its unique data is removed
724	from the plot. close fitpage only when the a loaded data is removed
725	"""
726	if event is None or event.data is None:
727	return
728
729	if hasattr(event.data,"is_data"):
730	if not event.data.is_data or event.data.__class__.__name__=="Data1D":
731	self.fit_panel.close_page_with_data(event.data)
732
733	def _add_page_onmenu(self, name,fitproblem=None):
734	"""
735	Add name of a closed page of fitpanel in a menu
736	"""
737	list = self.menu1.GetMenuItems()
738	for item in list:
739	if name == item.GetItemLabel():
740	self.closed_page_dict[name][1] = fitproblem
741
742	if not name in self.closed_page_dict.keys():
743	# Post paramters
744	event_id = wx.NewId()
745	self.menu1.Append(event_id, name, "Show %s fit panel" % name)
746	self.closed_page_dict[name]= [event_id, fitproblem]
747	wx.EVT_MENU(self.parent,event_id, self._open_closed_page)
748
749	def _open_closed_page(self, event):
750	"""
751	reopen a closed page
752	"""
753	for name, value in self.closed_page_dict.iteritems():
754	if event.GetId() in value:
755	id,fitproblem = value
756	if name !="Model":
757	data= fitproblem.get_fit_data()
758	page = self.fit_panel.add_fit_page(data= data,reset=True)
759	if fitproblem != None:
760	self.page_finder[page]=fitproblem
761	if self.sim_page != None:
762	self.sim_page.draw_page()
763
764	else:
765	model = fitproblem
766	self.fit_panel.add_model_page(model=model, topmenu=True,
767	reset= True)
768	break
769
770	def _reset_schedule_problem(self, value=0):
771	"""
772	unschedule or schedule all fitproblem to be fit
773	"""
774	for page, fitproblem in self.page_finder.iteritems():
775	fitproblem.schedule_tofit(value)
776
777	def _fit_helper(self, pars, value, id, title="Single Fit " ):
778	"""
779	helper for fitting
780	"""
781	metadata = value.get_fit_data()
782	model = value.get_model()
783	smearer = value.get_smearer()
784	qmin, qmax = value.get_range()
785	self.fit_id = id
786	#Create list of parameters for fitting used
787	templist = []
788
789	try:
790	#Extra list of parameters and their constraints
791	listOfConstraint = []
792
793	param = value.get_model_param()
794	if len(param) > 0:
795	for item in param:
796	## check if constraint
797	if item[0] != None and item[1] != None:
798	listOfConstraint.append((item[0],item[1]))
799
800	#Do the single fit
801	self.fitter.set_model(model, self.fit_id,
802	pars, constraints=listOfConstraint)
803
804	self.fitter.set_data(data=metadata, id=self.fit_id,
805	smearer=smearer, qmin=qmin, qmax=qmax)
806
807	self.fitter.select_problem_for_fit(id=self.fit_id,
808	value=value.get_scheduled())
809	value.clear_model_param()
810	except:
811	msg = title + " error: %s" % sys.exc_value
812	wx.PostEvent(self.parent, StatusEvent(status=msg, type="stop"))
813
814	def _onSelect(self,event):
815	"""
816	when Select data to fit a new page is created .Its reference is
817	added to self.page_finder
818	"""
819	self.panel = event.GetEventObject()
820	Plugin.on_perspective(self, event=event)
821	for plottable in self.panel.graph.plottables:
822	if plottable.__class__.__name__ in ["Data1D", "Theory1D"]:
823	if plottable.name == self.panel.graph.selected_plottable:
824	data = self.create_fittable_data1D(data=plottable)
825	self.add_fit_page(data=data)
826	return
827	else:
828	data = self.create_fittable_data2D(data=plottable)
829	self.add_fit_page(data=data)
830
831	def _single_fit_completed(self,result,pars,cpage, elapsed=None):
832	"""
833	Display fit result on one page of the notebook.
834
835	:param result: result of fit
836	:param pars: list of names of parameters fitted
837	:param current_pg: the page where information will be displayed
838	:param qmin: the minimum value of x to replot the model
839	:param qmax: the maximum value of x to replot model
840
841	"""
842	try:
843	if result ==None:
844	msg= "Simple Fitting Stop !!!"
845	wx.PostEvent(self.parent, StatusEvent(status=msg,info="warning",
846	type="stop"))
847	return
848	if not numpy.isfinite(result.fitness) or \
849	numpy.any(result.pvec == None) or \
850	not numpy.all(numpy.isfinite(result.pvec)):
851	msg = "Single Fitting did not converge!!!"
852	wx.PostEvent(self.parent,
853	StatusEvent(status=msg, type="stop"))
854	return
855	for page, value in self.page_finder.iteritems():
856	if page == cpage :
857	model = value.get_model()
858	break
859	param_name = []
860	i = 0
861	for name in pars:
862	param_name.append(name)
863
864	cpage.onsetValues(result.fitness,
865	param_name, result.pvec,result.stderr)
866
867	except:
868	msg = "Single Fit completed but Following"
869	msg += " error occurred:%s" % sys.exc_value
870	wx.PostEvent(self.parent, StatusEvent(status=msg, info="error",
871	type="stop"))
872	return
873
874	def _simul_fit_completed(self, result, pars=None, cpage=None, elapsed=None):
875	"""
876	Parameter estimation completed,
877	display the results to the user
878
879	:param alpha: estimated best alpha
880	:param elapsed: computation time
881
882	"""
883	## fit more than 1 model at the same time
884	try:
885	msg = ""
886	if result ==None:
887	msg= "Complex Fitting Stop !!!"
888	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
889	return
890	if not numpy.isfinite(result.fitness) or numpy.any(result.pvec ==None )or not numpy.all(numpy.isfinite(result.pvec) ):
891	msg= "Single Fitting did not converge!!!"
892	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
893	return
894
895	for page, value in self.page_finder.iteritems():
896	if value.get_scheduled()==1:
897	model = value.get_model()
898	data = value.get_fit_data()
899	small_param_name = []
900	small_out = []
901	small_cov = []
902	i = 0
903	#Separate result in to data corresponding to each page
904	for p in result.parameters:
905	model_name,param_name = self.split_string(p.name)
906	if model.name == model_name:
907	p_name= model.name+"."+param_name
908	if p.name == p_name:
909	if p.value != None and numpy.isfinite(p.value):
910	small_out.append(p.value )
911	small_param_name.append(param_name)
912	small_cov.append(p.stderr)
913
914	# Display result on each page
915	page.onsetValues(result.fitness, small_param_name,small_out,small_cov)
916	except:
917	msg= "Simultaneous Fit completed"
918	msg +=" but Following error occurred:%s"%sys.exc_value
919	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
920	return
921
922	def _on_show_panel(self, event):
923	"""
924	"""
925	#print "_on_show_panel: fitting"
926	pass
927
928	def _onset_engine_park(self,event):
929	"""
930	set engine to park
931	"""
932	Plugin.on_perspective(self,event=event)
933	self._on_change_engine('park')
934
935	def _onset_engine_scipy(self,event):
936	"""
937	set engine to scipy
938	"""
939	self._on_change_engine('scipy')
940
941	def _on_slicer_event(self, event):
942	"""
943	Receive a panel as event and send it to guiframe
944
945	:param event: event containing a panel
946
947	"""
948	if event.panel is not None:
949	new_panel = event.panel
950	self.slicer_panels.append(event.panel)
951	# Set group ID if available
952	event_id = self.parent.popup_panel(new_panel)
953	#self.menu3.Append(event_id, new_panel.window_caption,
954	# "Show %s plot panel" % new_panel.window_caption)
955	# Set id to allow us to reference the panel later
956
957	new_panel.uid = event_id
958	self.mypanels.append(new_panel)
959
960	def _onclearslicer(self, event):
961	"""
962	Clear the boxslicer when close the panel associate with this slicer
963	"""
964	name =event.GetPane().caption
965
966	for panel in self.slicer_panels:
967	if panel.window_caption==name:
968
969	for item in self.parent.panels:
970	if hasattr(self.parent.panels[item],"uid"):
971	if self.parent.panels[item].uid ==panel.base.uid:
972	self.parent.panels[item].onClearSlicer(event)
973	self.parent._mgr.Update()
974	break
975	break
976
977	def _return_engine_type(self):
978	"""
979	return the current type of engine
980	"""
981	return self._fit_engine
982
983
984	def _on_change_engine(self, engine='park'):
985	"""
986	Allow to select the type of engine to perform fit
987
988	:param engine: the key work of the engine
989
990	"""
991	## saving fit engine name
992	self._fit_engine = engine
993	## change menu item state
994	if engine=="park":
995	self.menu1.FindItemByPosition(0).Check(False)
996	self.menu1.FindItemByPosition(1).Check(True)
997	else:
998	self.menu1.FindItemByPosition(0).Check(True)
999	self.menu1.FindItemByPosition(1).Check(False)
1000
1001	## post a message to status bar
1002	wx.PostEvent(self.parent, StatusEvent(status="Engine set to: %s" % self._fit_engine))
1003
1004	## Bind every open fit page with a newevent to know the current fitting engine
1005	import fitpage
1006	event= fitpage.FitterTypeEvent()
1007	event.type = self._fit_engine
1008	for key in self.page_finder.keys():
1009	wx.PostEvent(key, event)
1010
1011	def _on_model_panel(self, evt):
1012	"""
1013	react to model selection on any combo box or model menu.plot the model
1014
1015	:param evt: wx.combobox event
1016
1017	"""
1018	model = evt.model
1019	if model == None:
1020	return
1021	smearer = None
1022	qmin = None
1023	qmax = None
1024	if hasattr(evt, "qmin"):
1025	qmin = evt.qmin
1026	if hasattr(evt, "qmax"):
1027	qmax = evt.qmax
1028	if hasattr(evt, "smearer"):
1029	smearer = evt.smearer
1030	model.origin_name = model.name
1031	self.current_pg = self.fit_panel.get_current_page()
1032	## make sure nothing is done on self.sim_page
1033	## example trying to call set_panel on self.sim_page
1034	if self.current_pg != self.sim_page :
1035	if self.page_finder[self.current_pg].get_model()== None:
1036
1037	model.name = "M"+str(self.index_model)
1038	self.index_model += 1
1039	else:
1040	model.name= self.page_finder[self.current_pg].get_model().name
1041
1042	data = self.page_finder[self.current_pg].get_fit_data()
1043
1044	# save the name containing the data name with the appropriate model
1045	self.page_finder[self.current_pg].set_model(model)
1046	qmin, qmax= self.current_pg.get_range()
1047	self.page_finder[self.current_pg].set_range(qmin=qmin, qmax=qmax)
1048
1049	if self.sim_page!=None:
1050	self.sim_page.draw_page()
1051
1052	def _on_model_menu(self, evt):
1053	"""
1054	Plot a theory from a model selected from the menu
1055
1056	:param evt: wx.menu event
1057
1058	"""
1059	model = evt.model
1060	Plugin.on_perspective(self,event=evt)
1061	# Create a model page. If a new page is created, the model
1062	# will be plotted automatically. If a page already exists,
1063	# the content will be updated and the plot refreshed
1064	self.fit_panel.add_model_page(model,topmenu=True)
1065
1066	def _update1D(self,x, output):
1067	"""
1068	Update the output of plotting model 1D
1069	"""
1070	wx.PostEvent(self.parent, StatusEvent(status="Plot \
1071	#updating ... ",type="update"))
1072	self.ready_fit()
1073	#self.calc_thread.ready(0.01)
1074
1075	def _fill_default_model2D(self, theory, qmax,qstep, qmin=None):
1076	"""
1077	fill Data2D with default value
1078
1079	:param theory: Data2D to fill
1080
1081	"""
1082	from DataLoader.data_info import Detector, Source
1083
1084	detector = Detector()
1085	theory.detector.append(detector)
1086	theory.source= Source()
1087
1088	## Default values
1089	theory.detector[0].distance= 8000 # mm
1090	theory.source.wavelength= 6 # A
1091	theory.detector[0].pixel_size.x= 5 # mm
1092	theory.detector[0].pixel_size.y= 5 # mm
1093
1094	theory.detector[0].beam_center.x= qmax
1095	theory.detector[0].beam_center.y= qmax
1096
1097	## create x_bins and y_bins of the model 2D
1098	pixel_width_x = theory.detector[0].pixel_size.x
1099	pixel_width_y = theory.detector[0].pixel_size.y
1100	center_x = theory.detector[0].beam_center.x/pixel_width_x
1101	center_y = theory.detector[0].beam_center.y/pixel_width_y
1102
1103	# theory default: assume the beam center is located at the center of sqr detector
1104	xmax = qmax
1105	xmin = -qmax
1106	ymax = qmax
1107	ymin = -qmax
1108
1109	x= numpy.linspace(start= -1*qmax,
1110	stop= qmax,
1111	num= qstep,
1112	endpoint=True )
1113	y = numpy.linspace(start= -1*qmax,
1114	stop= qmax,
1115	num= qstep,
1116	endpoint=True )
1117
1118	## use data info instead
1119	new_x = numpy.tile(x, (len(y),1))
1120	new_y = numpy.tile(y, (len(x),1))
1121	new_y = new_y.swapaxes(0,1)
1122
1123	# all data reuire now in 1d array
1124	qx_data = new_x.flatten()
1125	qy_data = new_y.flatten()
1126
1127	q_data = numpy.sqrt(qx_dataqx_data+qy_dataqy_data)
1128	# set all True (standing for unmasked) as default
1129	mask = numpy.ones(len(qx_data), dtype = bool)
1130
1131	# calculate the range of qx and qy: this way, it is a little more independent
1132	x_size = xmax- xmin
1133	y_size = ymax -ymin
1134
1135	# store x and y bin centers in q space
1136	x_bins = x
1137	y_bins = y
1138	# bin size: x- & y-directions
1139	xstep = x_size/len(x_bins-1)
1140	ystep = y_size/len(y_bins-1)
1141
1142	#theory.data = numpy.zeros(len(mask))
1143	theory.err_data = numpy.ones(len(mask))
1144	theory.qx_data = qx_data
1145	theory.qy_data = qy_data
1146	theory.q_data = q_data
1147	theory.mask = mask
1148	theory.x_bins = x_bins
1149	theory.y_bins = y_bins
1150
1151	# max and min taking account of the bin sizes
1152	theory.xmin= xmin
1153	theory.xmax= xmax
1154	theory.ymin= ymin
1155	theory.ymax= ymax
1156	theory.group_id = "Model"
1157	theory.id = "Model"
1158
1159	def _get_plotting_info(self, data=None):
1160	"""
1161	get plotting info from data if data !=None else use some default
1162	"""
1163	my_info = PlotInfo()
1164	if data !=None:
1165	if hasattr(data,"info"):
1166	x_name, x_units = data.get_xaxis()
1167	y_name, y_units = data.get_yaxis()
1168
1169	my_info._xunit = x_units
1170	my_info._xaxis = x_name
1171	my_info._yunit = y_units
1172	my_info._yaxis = y_name
1173
1174	my_info.title= data.name
1175	if hasattr(data, "info"):
1176	my_info.info= data.info
1177	if hasattr(data, "group_id"):
1178	my_info.group_id= data.group_id
1179	return my_info
1180
1181	def _complete1D(self, x,y, elapsed,index,model,data=None):
1182	"""
1183	Complete plotting 1D data
1184	"""
1185	try:
1186	new_plot = Theory1D(x=x, y=y)
1187	my_info = self._get_plotting_info( data)
1188	new_plot.name = model.name
1189	new_plot.id = my_info.id
1190	new_plot.group_id = my_info.group_id
1191
1192	new_plot.xaxis( my_info._xaxis, my_info._xunit)
1193	new_plot.yaxis( my_info._yaxis, my_info._yunit)
1194	if data!=None:
1195	if new_plot.id == data.id:
1196	new_plot.id += "Model"
1197	new_plot.is_data =False
1198
1199	title= new_plot.name
1200	# x, y are only in range of index
1201	self.theory_data = new_plot
1202	#new_plot.perspective = self.get_perspective()
1203	# Pass the reset flag to let the plotting event handler
1204	# know that we are replacing the whole plot
1205	if title== None:
1206	title = "Analytical model 1D "
1207	if data ==None:
1208	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
1209	title=str(title), reset=True))
1210	else:
1211	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,title= str(title)))
1212	# Chisqr in fitpage
1213	current_pg=self.fit_panel.get_current_page()
1214	wx.PostEvent(current_pg,Chi2UpdateEvent(output=self._cal_chisqr(data=data,index=index)))
1215	msg = "Plot 1D complete !"
1216	wx.PostEvent( self.parent, StatusEvent(status=msg , type="stop" ))
1217	except:
1218	msg= " Error occurred when drawing %s Model 1D: "%new_plot.name
1219	msg+= " %s"%sys.exc_value
1220	wx.PostEvent( self.parent, StatusEvent(status= msg, type="stop"))
1221
1222	def _update2D(self, output,time=None):
1223	"""
1224	Update the output of plotting model
1225	"""
1226	wx.PostEvent(self.parent, StatusEvent(status="Plot \
1227	#updating ... ",type="update"))
1228	self.ready_fit()
1229	#self.calc_thread.ready(0.01)
1230
1231	def _complete2D(self, image, data, model, elapsed, index, qmin,
1232	qmax, qstep=DEFAULT_NPTS):
1233	"""
1234	Complete get the result of modelthread and create model 2D
1235	that can be plot.
1236	"""
1237	err_image = numpy.zeros(numpy.shape(image))
1238
1239	theory= Data2D(image= image , err_image= err_image)
1240	theory.name= model.name
1241
1242	if data ==None:
1243	self._fill_default_model2D(theory=theory, qmax=qmax, qstep=qstep,
1244	qmin= qmin)
1245
1246	else:
1247	theory.id= data.id+"Model"
1248	theory.group_id= data.name+"Model"
1249	theory.x_bins= data.x_bins
1250	theory.y_bins= data.y_bins
1251	theory.detector= data.detector
1252	theory.source= data.source
1253	theory.is_data = False
1254	theory.qx_data = data.qx_data
1255	theory.qy_data = data.qy_data
1256	theory.q_data = data.q_data
1257	theory.err_data = err_image#numpy.zeros(len(data.err_data))#data.err_data
1258	theory.mask = data.mask
1259	## plot boundaries
1260	theory.ymin= data.ymin
1261	theory.ymax= data.ymax
1262	theory.xmin= data.xmin
1263	theory.xmax= data.xmax
1264
1265	self.theory_data = theory
1266	## plot
1267	wx.PostEvent(self.parent, NewPlotEvent(plot=theory,
1268	title="Analytical model 2D ", reset=True ))
1269	# Chisqr in fitpage
1270	current_pg = self.fit_panel.get_current_page()
1271	wx.PostEvent(current_pg,
1272	Chi2UpdateEvent(output=self._cal_chisqr(data=data,index=index)))
1273	msg = "Plot 2D complete !"
1274	wx.PostEvent( self.parent, StatusEvent(status=msg, type="stop" ))
1275
1276	def _on_data_error(self, event):
1277	"""
1278	receives and event from plotting plu-gins to store the data name and
1279	their errors of y coordinates for 1Data hide and show error
1280	"""
1281	self.err_dy = event.err_dy
1282
1283	def _draw_model2D(self,model,data=None, smearer= None,description=None, enable2D=False,
1284	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep=DEFAULT_NPTS):
1285	"""
1286	draw model in 2D
1287
1288	:param model: instance of the model to draw
1289	:param description: the description of the model
1290	:param enable2D: when True allows to draw model 2D
1291	:param qmin: the minimum value to draw model 2D
1292	:param qmax: the maximum value to draw model 2D
1293	:param qstep: the number of division of Qx and Qy of the model to draw
1294
1295	"""
1296	x= numpy.linspace(start= -1*qmax,
1297	stop= qmax,
1298	num= qstep,
1299	endpoint=True )
1300	y = numpy.linspace(start= -1*qmax,
1301	stop= qmax,
1302	num= qstep,
1303	endpoint=True )
1304	## use data info instead
1305	if data !=None:
1306	## check if data2D to plot
1307	if hasattr(data, "x_bins"):
1308	enable2D = True
1309	x= data.x_bins
1310	y= data.y_bins
1311
1312	if not enable2D:
1313	return None,None
1314	try:
1315	from model_thread import Calc2D
1316	## If a thread is already started, stop it
1317	if self.calc_2D != None and self.calc_2D.isrunning():
1318	self.calc_2D.stop()
1319
1320	self.calc_2D = Calc2D( x= x,
1321	y= y,
1322	model= model,
1323	data = data,
1324	smearer = smearer,
1325	qmin= qmin,
1326	qmax= qmax,
1327	qstep= qstep,
1328	completefn= self._complete2D,
1329	updatefn= self._update2D )
1330	self.calc_2D.queue()
1331
1332	except:
1333	msg= " Error occurred when drawing %s Model 2D: " % model.name
1334	msg+= " %s" % sys.exc_value
1335	wx.PostEvent(self.parent, StatusEvent(status=msg))
1336
1337	def _draw_model1D(self, model, data=None, smearer=None,
1338	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX,
1339	qstep=DEFAULT_NPTS, enable1D=True):
1340	"""
1341	Draw model 1D from loaded data1D
1342
1343	:param data: loaded data
1344	:param model: the model to plot
1345
1346	"""
1347	x= numpy.linspace(start= qmin,
1348	stop= qmax,
1349	num= qstep,
1350	endpoint=True
1351	)
1352	if data!=None:
1353	## check for data2D
1354	if hasattr(data,"x_bins"):
1355	return
1356	x = data.x
1357	if qmin == DEFAULT_QMIN :
1358	qmin = min(data.x)
1359	if qmax == DEFAULT_QMAX:
1360	qmax = max(data.x)
1361
1362
1363	if not enable1D:
1364	return
1365
1366	try:
1367	from model_thread import Calc1D
1368	## If a thread is already started, stop it
1369	if self.calc_1D!= None and self.calc_1D.isrunning():
1370	self.calc_1D.stop()
1371	self.calc_1D= Calc1D( x= x,
1372	data = data,
1373	model= model,
1374	qmin = qmin,
1375	qmax = qmax,
1376	smearer = smearer,
1377	completefn = self._complete1D,
1378	updatefn = self._update1D )
1379	self.calc_1D.queue()
1380
1381	except:
1382	msg= " Error occurred when drawing %s Model 1D: "%model.name
1383	msg+= " %s"%sys.exc_value
1384	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1385
1386	def _cal_chisqr(self, data=None, index=None):
1387	"""
1388	Get handy Chisqr using the output from draw1D and 2D,
1389	instead of calling expansive CalcChisqr in guithread
1390	"""
1391	# default chisqr
1392	chisqr = None
1393
1394	# return None if data == None
1395	if data == None: return chisqr
1396
1397	# Get data: data I, theory I, and data dI in order
1398	if data.__class__.__name__ =="Data2D":
1399	if index == None: index = numpy.ones(len(data.data),ntype=bool)
1400	index = index & (data.err_data !=0 ) # get rid of zero error points
1401	fn = data.data[index]
1402	gn = self.theory_data.data[index]
1403	en = data.err_data[index]
1404	else:
1405	# 1 d theory from model_thread is only in the range of index
1406	if index == None: index = numpy.ones(len(data.y),ntype=bool)
1407	if data.dy== None or data.dy ==[]:
1408	dy = numpy.ones(len(data.y))
1409	else:
1410	## Set consitently w/AbstractFitengine: But this should be corrected later.
1411	dy = data.dy
1412	dy[dy==0] = 1
1413	fn = data.y[index]
1414	gn = self.theory_data.y
1415	en = dy[index]
1416
1417	# residual
1418	res = (fn - gn)/en
1419	# get chisqr only w/finite
1420	chisqr = numpy.average(res[numpy.isfinite(res)]*res[numpy.isfinite(res)])
1421
1422	return chisqr
1423
1424
1425	#def profile(fn, args, *kw):
1426	# import cProfile, pstats, os
1427	# global call_result
1428	# def call():
1429	# global call_result
1430	# call_result = fn(args, *kw)
1431	# cProfile.runctx('call()', dict(call=call), {}, 'profile.out')
1432	# stats = pstats.Stats('profile.out')
1433	# #stats.sort_stats('time')
1434	# stats.sort_stats('calls')
1435	# stats.print_stats()
1436	# os.unlink('profile.out')
1437	# return call_result
1438	if __name__ == "__main__":
1439	i = Plugin()
1440
1441
1442
1443

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SasView

source: sasview/sansview/perspectives/fitting/fitting.py @ 3658abed

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