fitting.py @ 513115c

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 513115c was 513115c, checked in by Gervaise Alina <gervyh@…>, 15 years ago
reducing possibility to fit the same model many time
Property mode set to `100644`
File size: 44.3 KB

Line
1	import re,copy
2	import sys, wx, logging
3	import string, numpy, math
4
5	from danse.common.plottools.plottables import Data1D, Theory1D,Data2D
6	from danse.common.plottools.PlotPanel import PlotPanel
7	from sans.guicomm.events import NewPlotEvent, StatusEvent
8	from sans.guicomm.events import EVT_SLICER_PANEL,ERR_DATA
9	from sans.guiframe import dataFitting
10	from sans.fit.AbstractFitEngine import Model,FitData1D,FitData2D
11
12	from fitproblem import FitProblem
13	from fitpanel import FitPanel
14	from fit_thread import FitThread
15	import models
16	import fitpage
17
18
19	DEFAULT_BEAM = 0.005
20	DEFAULT_QMIN = 0.0
21	DEFAULT_QMAX = 0.1
22	DEFAULT_NPTS = 50
23	import time
24	import thread
25
26
27	(PageInfoEvent, EVT_PAGE_INFO) = wx.lib.newevent.NewEvent()
28	class PlotInfo:
29	"""
30	store some plotting field
31	"""
32	_xunit = 'A^{-1}'
33	_xaxis= "\\rm{Q}"
34	_yunit = "cm^{-1}"
35	_yaxis= "\\rm{Intensity} "
36	id = "Model"
37	group_id = "Model"
38	title= None
39	info= None
40
41
42	class Plugin:
43	"""
44	Fitting plugin is used to perform fit
45	"""
46	def __init__(self):
47	## Plug-in name
48	self.sub_menu = "Fitting"
49
50	## Reference to the parent window
51	self.parent = None
52	#Provide list of models existing in the application
53	self.menu_mng = models.ModelManager()
54	## List of panels for the simulation perspective (names)
55	self.perspective = []
56	#list of panel to send to guiframe
57	self.mypanels=[]
58	# reference to the current running thread
59	self.calc_2D= None
60	self.calc_1D= None
61	self.calc_fit= None
62
63	# Start with a good default
64	self.elapsed = 0.022
65	# the type of optimizer selected, park or scipy
66	self.fitter = None
67	#Flag to let the plug-in know that it is running stand alone
68	self.standalone=True
69	## dictionary of page closed and id
70	self.closed_page_dict ={}
71	## Fit engine
72	self._fit_engine = 'scipy'
73	#List of selected data
74	self.selected_data_list=[]
75	# Log startup
76	logging.info("Fitting plug-in started")
77	# model 2D view
78	self.model2D_id=None
79	#keep reference of the simultaneous fit page
80	self.sim_page=None
81	#dictionary containing data name and error on dy of that data
82	self.err_dy={}
83
84
85
86	def populate_menu(self, id, owner):
87	"""
88	Create a menu for the Fitting plug-in
89	@param id: id to create a menu
90	@param owner: owner of menu
91	@ return : list of information to populate the main menu
92	"""
93	#Menu for fitting
94	self.menu1 = wx.Menu()
95
96	#Set park engine
97	id3 = wx.NewId()
98	scipy_help= "Scipy Engine: Perform Simple fit. More in Help window...."
99	self.menu1.AppendCheckItem(id3, "Simple Fit [Scipy]",scipy_help)
100	wx.EVT_MENU(owner, id3, self._onset_engine_scipy)
101
102	id3 = wx.NewId()
103	park_help = "Park Engine: Perform Complex fit. More in Help window...."
104	self.menu1.AppendCheckItem(id3, "Complex Fit [Park]",park_help)
105	wx.EVT_MENU(owner, id3, self._onset_engine_park)
106
107	self.menu1.FindItemByPosition(0).Check(True)
108	self.menu1.FindItemByPosition(1).Check(False)
109
110	self.menu1.AppendSeparator()
111
112	id1 = wx.NewId()
113	simul_help = "Allow to edit fit engine with multiple model and data"
114	self.menu1.Append(id1, '&Simultaneous Page',simul_help)
115	wx.EVT_MENU(owner, id1, self.on_add_sim_page)
116
117	#menu for model
118	menu2 = wx.Menu()
119
120	self.menu_mng.populate_menu(menu2, owner)
121	id2 = wx.NewId()
122	owner.Bind(models.EVT_MODEL,self._on_model_menu)
123
124	self.fit_panel.set_owner(owner)
125	self.fit_panel.set_model_list(self.menu_mng.get_model_list())
126	owner.Bind(fitpage.EVT_MODEL_BOX,self._on_model_panel)
127
128	#self.menu3= wx.Menu()
129	#id4 = wx.NewId()
130
131	#create menubar items
132	return [(id, self.menu1, "Fitting"),
133	(id2, menu2, "Model")]
134	#return [(id, self.menu1, "Fitting"),
135	# (id4,self.menu3,"Averagers"),
136	# (id2, menu2, "Model")]
137
138	def on_add_sim_page(self, event):
139	"""
140	Create a page to access simultaneous fit option
141	"""
142	if self.sim_page !=None:
143	msg= "Simultaneous Fit page already opened"
144	wx.PostEvent(self.parent, StatusEvent(status= msg))
145	return
146
147	self.sim_page= self.fit_panel.add_sim_page()
148
149
150
151	def help(self, evt):
152	"""
153	Show a general help dialog.
154	TODO: replace the text with a nice image
155	"""
156	from helpPanel import HelpWindow
157	frame = HelpWindow(None, -1, 'HelpWindow')
158	frame.Show(True)
159
160
161	def get_context_menu(self, graph=None):
162	"""
163	Get the context menu items available for P(r)
164	@param graph: the Graph object to which we attach the context menu
165	@return: a list of menu items with call-back function
166	"""
167	self.graph=graph
168	for item in graph.plottables:
169	if hasattr(item,"is_data"):
170	if item.is_data== False:
171	return []
172
173	if item.__class__.__name__ is "Data2D":
174	return [["Select data for Fitting",\
175	"Dialog with fitting parameters ", self._onSelect]]
176	else:
177
178	if item.name==graph.selected_plottable :
179	if not hasattr(item, "group_id"):
180	return []
181	return [["Select data for Fitting", \
182	"Dialog with fitting parameters ", self._onSelect]]
183	return []
184
185
186	def get_panels(self, parent):
187	"""
188	Create and return a list of panel objects
189	"""
190	self.parent = parent
191	# Creation of the fit panel
192	self.fit_panel = FitPanel(self.parent, -1)
193	#Set the manager for the main panel
194	self.fit_panel.set_manager(self)
195	# List of windows used for the perspective
196	self.perspective = []
197	self.perspective.append(self.fit_panel.window_name)
198	# take care of saving data, model and page associated with each other
199	self.page_finder = {}
200	#index number to create random model name
201	self.index_model = 0
202	self.index_theory= 0
203	self.parent.Bind(EVT_SLICER_PANEL, self._on_slicer_event)
204	self.parent.Bind( ERR_DATA, self._on_data_error)
205
206	#Send the fitting panel to guiframe
207	self.mypanels.append(self.fit_panel)
208	return self.mypanels
209
210
211
212	def get_perspective(self):
213	"""
214	Get the list of panel names for this perspective
215	"""
216	return self.perspective
217
218
219	def on_perspective(self, event):
220	"""
221	Call back function for the perspective menu item.
222	We notify the parent window that the perspective
223	has changed.
224	"""
225	self.parent.set_perspective(self.perspective)
226
227
228	def post_init(self):
229	"""
230	Post initialization call back to close the loose ends
231	[Somehow openGL needs this call]
232	"""
233	self.parent.set_perspective(self.perspective)
234
235
236	def copy_data(self, item, dy):
237	"""
238	receive a data 1D and the list of errors on dy
239	and create a new data1D data
240	@param return
241	"""
242	detector=None
243	source=None
244	info = None
245	id=None
246	dxl=None
247	dxw=None
248	if hasattr(item, "dxl"):
249	dxl = copy.deepcopy(item.dxl)
250	if hasattr(item, "dxw"):
251	dxw = copy.deepcopy(item.dxw)
252	if hasattr(item, "detector"):
253	detector = copy.deepcopy(item.detector)
254	if hasattr(item, "source"):
255	source = copy.deepcopy(item.source)
256	if hasattr(item ,"info"):
257	info= copy.deepcopy(item.info)
258	if hasattr(item,"id"):
259	id = copy.deepcopy(item.id)
260
261	from sans.guiframe import dataFitting
262
263	data= dataFitting.Data1D(x=item.x, y=item.y, dy=dy, dxl=dxl, dxw=dxw)
264
265	data.name = item.name
266	data.detector = detector
267	data.source = source
268	## allow to highlight data when plotted
269	data.interactive = copy.deepcopy(item.interactive)
270	## when 2 data have the same id override the 1 st plotted
271	data.id = id
272	## info is a reference to output of dataloader that can be used
273	## to save data 1D as cansas xml file
274	data.info= info
275	is_data=False
276	if hasattr(item, "is_data"):
277	is_data= item.is_data
278	data.is_data = is_data
279	## If the data file does not tell us what the axes are, just assume...
280	data.xaxis(copy.deepcopy(item._xaxis),copy.deepcopy(item._xunit))
281	data.yaxis(copy.deepcopy(item._yaxis),copy.deepcopy(item._yunit))
282	##group_id specify on which panel to plot this data
283	data.group_id = copy.deepcopy(item.group_id)
284	return data
285
286	def set_fit_range(self, page, qmin, qmax):
287	"""
288	Set the fitting range of a given page
289	"""
290	if page in self.page_finder.iterkeys():
291	fitproblem= self.page_finder[page]
292	fitproblem.set_range(qmin= qmin, qmax= qmax)
293
294	def schedule_for_fit(self,value=0,page=None,fitproblem =None):
295	"""
296	Set the fit problem field to 0 or 1 to schedule that problem to fit.
297	Schedule the specified fitproblem or get the fit problem related to
298	the current page and set value.
299	@param value : integer 0 or 1
300	@param fitproblem: fitproblem to schedule or not to fit
301	"""
302	if fitproblem !=None:
303	fitproblem.schedule_tofit(value)
304	else:
305	if page in self.page_finder.iterkeys():
306	fitproblem= self.page_finder[page]
307	fitproblem.schedule_tofit(value)
308
309
310
311	def get_page_finder(self):
312	""" @return self.page_finder used also by simfitpage.py"""
313	return self.page_finder
314
315
316	def set_page_finder(self,modelname,names,values):
317	"""
318	Used by simfitpage.py to reset a parameter given the string constrainst.
319	@param modelname: the name ot the model for with the parameter has to reset
320	@param value: can be a string in this case.
321	@param names: the paramter name
322	@note: expecting park used for fit.
323	"""
324	sim_page= self.sim_page
325	for page, value in self.page_finder.iteritems():
326	if page != sim_page:
327	list=value.get_model()
328	model = list[0]
329	if model.name== modelname:
330	value.set_model_param(names,values)
331	break
332
333
334
335	def split_string(self,item):
336	"""
337	receive a word containing dot and split it. used to split parameterset
338	name into model name and parameter name example:
339	paramaterset (item) = M1.A
340	@return model_name =M1 , parameter name =A
341	"""
342	if string.find(item,".")!=-1:
343	param_names= re.split("\.",item)
344	model_name=param_names[0]
345	param_name=param_names[1]
346	return model_name,param_name
347
348
349	def stop_fit(self):
350	"""
351	Stop the fit engine
352	"""
353	if self.calc_fit!= None and self.calc_thread.isrunning():
354	self.calc_thread.stop()
355	wx.PostEvent(self.parent, StatusEvent(status="Fitting \
356	is cancelled" , type="stop"))
357
358
359
360	def set_smearer(self,smearer, qmin=None, qmax=None):
361	"""
362	Get a smear object and store it to a fit problem
363	@param smearer: smear object to allow smearing data
364	"""
365	current_pg=self.fit_panel.get_current_page()
366	self.page_finder[current_pg].set_smearer(smearer)
367	## draw model 1D with smeared data
368	data = self.page_finder[current_pg].get_plotted_data()
369	model = self.page_finder[current_pg].get_model()
370	## if user has already selected a model to plot
371	## redraw the model with data smeared
372
373	smear =self.page_finder[current_pg].get_smearer()
374	self.draw_model( model=model, data= data, smearer= smear,
375	qmin= qmin, qmax= qmax)
376
377
378
379	def draw_model(self, model, data= None,smearer= None,
380	enable1D= True, enable2D= False,
381	qmin= DEFAULT_QMIN, qmax= DEFAULT_QMAX, qstep= DEFAULT_NPTS):
382	"""
383	Draw model.
384	@param model: the model to draw
385	@param name: the name of the model to draw
386	@param data: the data on which the model is based to be drawn
387	@param description: model's description
388	@param enable1D: if true enable drawing model 1D
389	@param enable2D: if true enable drawing model 2D
390	@param qmin: Range's minimum value to draw model
391	@param qmax: Range's maximum value to draw model
392	@param qstep: number of step to divide the x and y-axis
393
394	"""
395	## draw model 1D with no loaded data
396	self._draw_model1D( model= model, data= data,enable1D=enable1D, smearer= smearer,
397	qmin= qmin, qmax= qmax, qstep= qstep )
398	## draw model 2D with no initial data
399	self._draw_model2D(model=model,
400	data = data,
401	enable2D= enable2D,
402	qmin=qmin,
403	qmax=qmax,
404	qstep=qstep)
405
406
407
408	def onFit(self):
409	"""
410	perform fit
411	"""
412	## count the number of fitproblem schedule to fit
413	fitproblem_count= 0
414	for value in self.page_finder.itervalues():
415	if value.get_scheduled()==1:
416	fitproblem_count += 1
417
418	## if simultaneous fit change automatically the engine to park
419	if fitproblem_count >1:
420	self._on_change_engine(engine='park')
421
422	from sans.fit.Fitting import Fit
423	self.fitter= Fit(self._fit_engine)
424
425	if self._fit_engine=="park":
426	engineType="Simultaneous Fit"
427	else:
428	engineType="Single Fit"
429
430	fproblemId = 0
431	current_pg=None
432	for page, value in self.page_finder.iteritems():
433	try:
434	if value.get_scheduled()==1:
435	#Get list of parameters name to fit
436	pars = []
437	templist = []
438	templist = page.get_param_list()
439	for element in templist:
440	name = str(element[1])
441	pars.append(name)
442	#Set Engine (model , data) related to the page on
443	self._fit_helper( current_pg=page, value=value,pars=pars,
444	id=fproblemId, title= engineType )
445	fproblemId += 1
446	current_pg= page
447	except:
448	raise
449	return
450	#msg= "%s error: %s" % (engineType,sys.exc_value)
451	#wx.PostEvent(self.parent, StatusEvent(status= msg ))
452	#return
453	#Do the simultaneous fit
454	try:
455	## If a thread is already started, stop it
456	if self.calc_fit!= None and self.calc_fit.isrunning():
457	self.calc_fit.stop()
458
459	wx.PostEvent(self.parent, StatusEvent(status="Start the computation",
460	curr_thread=self.calc_fit,type="start"))
461	wx.PostEvent(self.parent, StatusEvent(status="Computing...",
462	curr_thread=self.calc_fit,type="progress"))
463	## perform single fit
464	if self._fit_engine=="scipy":
465	qmin, qmax= current_pg.get_range()
466	self.calc_fit=FitThread(parent =self.parent,
467	fn= self.fitter,
468	cpage=current_pg,
469	pars= pars,
470	completefn= self._single_fit_completed,
471	updatefn=self._updateFit)
472
473	else:
474	## Perform more than 1 fit at the time
475	self.calc_fit=FitThread(parent =self.parent,
476	fn= self.fitter,
477	completefn= self._simul_fit_completed,
478	updatefn=self._updateFit)
479	self.calc_fit.queue()
480	self.calc_fit.ready(2.5)
481
482	except:
483	raise
484	#msg= "%s error: %s" % (engineType,sys.exc_value)
485	#wx.PostEvent(self.parent, StatusEvent(status= msg ,type="stop"))
486	#return
487
488
489	def _add_page_onmenu(self, name,fitproblem=None):
490	"""
491	Add name of a closed page of fitpanel in a menu
492	"""
493	list = self.menu1.GetMenuItems()
494	for item in list:
495	if name == item.GetItemLabel():
496	self.closed_page_dict[name][1] = fitproblem
497
498	if not name in self.closed_page_dict.keys():
499	# Post paramters
500	event_id = wx.NewId()
501	self.menu1.Append(event_id, name, "Show %s fit panel" % name)
502	self.closed_page_dict[name]= [event_id, fitproblem]
503	wx.EVT_MENU(self.parent,event_id, self._open_closed_page)
504
505
506	def _open_closed_page(self, event):
507	"""
508	reopen a closed page
509	"""
510	for name, value in self.closed_page_dict.iteritems():
511	if event.GetId() in value:
512	id,fitproblem = value
513	if name !="Model":
514	data= fitproblem.get_fit_data()
515	page = self.fit_panel.add_fit_page(data= data,reset=True)
516	if fitproblem != None:
517	self.page_finder[page]=fitproblem
518	if self.sim_page != None:
519	self.sim_page.draw_page()
520
521	else:
522	model = fitproblem
523	self.fit_panel.add_model_page(model=model, topmenu=True,
524	reset= True)
525	break
526
527
528	def _reset_schedule_problem(self, value=0):
529	"""
530	unschedule or schedule all fitproblem to be fit
531	"""
532	for page, fitproblem in self.page_finder.iteritems():
533	fitproblem.schedule_tofit(value)
534
535	def _fit_helper(self,current_pg,pars,value, id, title="Single Fit " ):
536	"""
537	helper for fitting
538	"""
539	metadata = value.get_fit_data()
540	model = value.get_model()
541	smearer = value.get_smearer()
542	qmin , qmax = value.get_range()
543	self.fit_id =id
544	#Create list of parameters for fitting used
545	templist=[]
546	pars=pars
547	try:
548	## create a park model and reset parameter value if constraint
549	## is given
550	new_model = Model(model)
551	param = value.get_model_param()
552	if len(param)>0:
553	for item in param:
554	param_value = item[1]
555	param_name = item[0]
556	## check if constraint
557	if param_value !=None and param_name != None:
558	new_model.parameterset[ param_name].set( param_value )
559
560	#Do the single fit
561	self.fitter.set_model(new_model, self.fit_id, pars)
562
563	self.fitter.set_data(data=metadata,Uid=self.fit_id,
564	smearer=smearer,qmin= qmin,qmax=qmax )
565
566	self.fitter.select_problem_for_fit(Uid= self.fit_id,
567	value= value.get_scheduled())
568	value.clear_model_param()
569	except:
570	raise
571	return
572	#msg= title +" error: %s" % sys.exc_value
573	#wx.PostEvent(self.parent, StatusEvent(status= msg, type="stop"))
574	#return
575
576	def _onSelect(self,event):
577	"""
578	when Select data to fit a new page is created .Its reference is
579	added to self.page_finder
580	"""
581	self.panel = event.GetEventObject()
582	for plottable in self.panel.graph.plottables:
583
584	if plottable.name == self.panel.graph.selected_plottable:
585	if not hasattr(plottable, "is_data")or \
586	plottable.__class__.__name__=="Theory1D":
587	dy=numpy.zeros(len(plottable.y))
588	if hasattr(plottable, "dy"):
589	dy= copy.deepcopy(plottable.dy)
590	item= self.copy_data(plottable, dy)
591	item.group_id += "data1D"
592	item.id +="data1D"
593	item.is_data= False
594	title = item.name
595	wx.PostEvent(self.parent, NewPlotEvent(plot=item, title=str(title)))
596	else:
597	item= copy.deepcopy(plottable)
598	## put the errors values back to the model if the errors were hiden
599	## before sending them to the fit engine
600	if len(self.err_dy)>0:
601	if item.name in self.err_dy.iterkeys():
602	dy= self.err_dy[item.name]
603	data= self.copy_data(item, dy)
604	else:
605	data= copy.deepcopy(item)
606	else:
607	if item.dy==None:
608	dy= numpy.zeros(len(item.y))
609	data= self.copy_data(item, dy)
610	else:
611	data= copy.deepcopy(item)
612	else:
613	## Data2D case
614	if not hasattr(plottable, "is_data"):
615	item= copy.deepcopy(plottable)
616	item.group_id += "data2D"
617	item.id +="data2D"
618	item.is_data= False
619	title = item.name
620	title += " Fit"
621	data = item
622	wx.PostEvent(self.parent, NewPlotEvent(plot=item, title=str(title)))
623	else:
624	item= copy.deepcopy(plottable )
625	data= copy.deepcopy(plottable )
626	## create anew page
627	if item.name == self.panel.graph.selected_plottable or\
628	item.__class__.__name__ is "Data2D":
629	try:
630	page = self.fit_panel.add_fit_page(data)
631	# add data associated to the page created
632	if page !=None:
633	#create a fitproblem storing all link to data,model,page creation
634	if not page in self.page_finder.keys():
635	self.page_finder[page]= FitProblem()
636	## item is almost the same as data but contains
637	## axis info for plotting
638	self.page_finder[page].add_plotted_data(item)
639	self.page_finder[page].add_fit_data(data)
640
641	wx.PostEvent(self.parent, StatusEvent(status="Page Created"))
642	else:
643	wx.PostEvent(self.parent, StatusEvent(status="Page was already Created"))
644	except:
645	wx.PostEvent(self.parent, StatusEvent(status="Creating Fit page: %s"\
646	%sys.exc_value))
647	return
648	def _updateFit(self):
649	"""
650	Is called when values of result are available
651	"""
652	##Sending a progess message to the status bar
653	wx.PostEvent(self.parent, StatusEvent(status="Computing..."))
654
655	def _single_fit_completed(self,result,pars,cpage, elapsed=None):
656	"""
657	Display fit result on one page of the notebook.
658	@param result: result of fit
659	@param pars: list of names of parameters fitted
660	@param current_pg: the page where information will be displayed
661	@param qmin: the minimum value of x to replot the model
662	@param qmax: the maximum value of x to replot model
663
664	"""
665	wx.PostEvent(self.parent, StatusEvent(status="Single fit \
666	complete! " ))
667
668	try:
669	for page, value in self.page_finder.iteritems():
670	if page==cpage :
671	model= value.get_model()
672	break
673	i = 0
674	for name in pars:
675	if result.pvec.__class__==numpy.float64:
676	model.setParam(name,result.pvec)
677	else:
678	model.setParam(name,result.pvec[i])
679	i += 1
680	## Reset values of the current page to fit result
681	cpage.onsetValues(result.fitness, result.pvec,result.stderr)
682	## plot the current model with new param
683	metadata = self.page_finder[cpage].get_fit_data()
684	model = self.page_finder[cpage].get_model()
685	qmin, qmax= self.page_finder[cpage].get_range()
686	smearer =self.page_finder[cpage].get_smearer()
687	#Replot models
688	msg= "Single Fit completed. plotting... %s:"%model.name
689	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
690	self.draw_model( model=model, data= metadata, smearer= smearer,
691	qmin= qmin, qmax= qmax)
692	wx.PostEvent(self.parent, StatusEvent(status=" " , type="stop"))
693	except:
694	raise
695	#msg= "Single Fit completed but Following error occurred:%s"% sys.exc_value
696	#wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
697	#return
698
699
700	def _simul_fit_completed(self,result,pars=None,cpage=None, elapsed=None):
701	"""
702	Parameter estimation completed,
703	display the results to the user
704	@param alpha: estimated best alpha
705	@param elapsed: computation time
706	"""
707	wx.PostEvent(self.parent, StatusEvent(status="Simultaneous fit \
708	complete "))
709
710	## fit more than 1 model at the same time
711	try:
712	for page, value in self.page_finder.iteritems():
713	if value.get_scheduled()==1:
714	model = value.get_model()
715	metadata = value.get_plotted_data()
716	small_out = []
717	small_cov = []
718	i = 0
719	#Separate result in to data corresponding to each page
720	for p in result.parameters:
721	model_name,param_name = self.split_string(p.name)
722	if model.name == model_name:
723	p_name= model.name+"."+param_name
724	if p.name == p_name:
725	small_out.append(p.value )
726	model.setParam(param_name,p.value)
727
728	small_cov.append(p.stderr)
729	else:
730	value= model.getParam(param_name)
731	small_out.append(value )
732	small_cov.append(None)
733	# Display result on each page
734	page.onsetValues(result.fitness, small_out,small_cov)
735	#Replot models
736	msg= "Simultaneous Fit completed. plotting... %s:"%model.name
737	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
738	qmin, qmax= page.get_range()
739	smearer =self.page_finder[page].get_smearer()
740	self.draw_model( model=model, data= metadata, smearer=smearer,
741	qmin= qmin, qmax= qmax)
742	wx.PostEvent(self.parent, StatusEvent(status="", type="stop"))
743	except:
744	msg= "Simultaneous Fit completed"
745	msg +=" but Following error occurred:%s"%sys.exc_value
746	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
747	return
748
749
750
751	def _on_show_panel(self, event):
752	print "_on_show_panel: fitting"
753
754
755	def _onset_engine_park(self,event):
756	"""
757	set engine to park
758	"""
759	self._on_change_engine('park')
760
761
762	def _onset_engine_scipy(self,event):
763	"""
764	set engine to scipy
765	"""
766	self._on_change_engine('scipy')
767
768	def _on_slicer_event(self, event):
769	"""
770	Receive a panel as event and send it to guiframe
771	@param event: event containing a panel
772	"""
773	if event.panel!=None:
774	new_panel = event.panel
775	# Set group ID if available
776	event_id = self.parent.popup_panel(new_panel)
777	#self.menu3.Append(event_id, new_panel.window_caption,
778	# "Show %s plot panel" % new_panel.window_caption)
779	# Set UID to allow us to reference the panel later
780	new_panel.uid = event_id
781	self.mypanels.append(new_panel)
782	return
783
784
785	def _return_engine_type(self):
786	"""
787	return the current type of engine
788	"""
789	return self._fit_engine
790
791
792	def _on_change_engine(self, engine='park'):
793	"""
794	Allow to select the type of engine to perform fit
795	@param engine: the key work of the engine
796	"""
797	## saving fit engine name
798	self._fit_engine = engine
799	## change menu item state
800	if engine=="park":
801	self.menu1.FindItemByPosition(0).Check(False)
802	self.menu1.FindItemByPosition(1).Check(True)
803	else:
804	self.menu1.FindItemByPosition(0).Check(True)
805	self.menu1.FindItemByPosition(1).Check(False)
806
807	## post a message to status bar
808	wx.PostEvent(self.parent, StatusEvent(status="Engine set to: %s" % self._fit_engine))
809
810	## Bind every open fit page with a newevent to know the current fitting engine
811	import fitpage
812	event= fitpage.FitterTypeEvent()
813	event.type = self._fit_engine
814	for key in self.page_finder.keys():
815	wx.PostEvent(key, event)
816
817
818	def _on_model_panel(self, evt):
819	"""
820	react to model selection on any combo box or model menu.plot the model
821	@param evt: wx.combobox event
822	"""
823	model = evt.model
824
825	if model ==None:
826	return
827
828	current_pg = self.fit_panel.get_current_page()
829	## make sure nothing is done on self.sim_page
830	## example trying to call set_panel on self.sim_page
831	if current_pg != self.sim_page :
832
833	if self.page_finder[current_pg].get_model()== None :
834
835	model.name="M"+str(self.index_model)
836	self.index_model += 1
837	else:
838	model.name= self.page_finder[current_pg].get_model().name
839
840	metadata = self.page_finder[current_pg].get_plotted_data()
841
842	# save the name containing the data name with the appropriate model
843	self.page_finder[current_pg].set_model(model)
844	qmin, qmax= current_pg.get_range()
845	self.page_finder[current_pg].set_range(qmin=qmin, qmax=qmax)
846	smearer= self.page_finder[current_pg].get_smearer()
847	# save model name
848	self.draw_model( model=model,smearer=smearer,
849	data= metadata, qmin=qmin, qmax=qmax)
850
851	if self.sim_page!=None:
852	self.sim_page.draw_page()
853
854
855
856	def _on_model_menu(self, evt):
857	"""
858	Plot a theory from a model selected from the menu
859	@param evt: wx.menu event
860	"""
861	model = evt.model
862
863	# Create a model page. If a new page is created, the model
864	# will be plotted automatically. If a page already exists,
865	# the content will be updated and the plot refreshed
866	self.fit_panel.add_model_page(model,topmenu=True)
867
868
869
870
871	def _update1D(self,x, output):
872	"""
873	Update the output of plotting model 1D
874	"""
875	wx.PostEvent(self.parent, StatusEvent(status="Plot \
876	#updating ... ",type="update"))
877	self.calc_thread.ready(0.01)
878
879	def _fill_default_model2D(self, theory, qmax,qstep, qmin=None):
880	"""
881	fill Data2D with default value
882	@param theory: Data2D to fill
883	"""
884	from DataLoader.data_info import Detector, Source
885
886	detector = Detector()
887	theory.detector.append(detector)
888
889	theory.detector[0].distance=1e+32
890	theory.source= Source()
891	theory.source.wavelength=2*math.pi/1e+32
892
893	## Create detector for Model 2D
894	xmax=2theory.detector[0].distancemath.atan(\
895	qmax/(4*math.pi/theory.source.wavelength))
896
897	theory.detector[0].pixel_size.x= xmax/(qstep/2-0.5)
898	theory.detector[0].pixel_size.y= xmax/(qstep/2-0.5)
899	theory.detector[0].beam_center.x= qmax
900	theory.detector[0].beam_center.y= qmax
901	## create x_bins and y_bins of the model 2D
902	distance = theory.detector[0].distance
903	pixel = qstep/2-1
904	theta = pixel / distance / qstep#100.0
905	wavelength = theory.source.wavelength
906	pixel_width_x = theory.detector[0].pixel_size.x
907	pixel_width_y = theory.detector[0].pixel_size.y
908	center_x = theory.detector[0].beam_center.x/pixel_width_x
909	center_y = theory.detector[0].beam_center.y/pixel_width_y
910
911
912	size_x, size_y= numpy.shape(theory.data)
913	for i_x in range(size_x):
914	theta = (i_x-center_x)*pixel_width_x / distance
915	qx = 4.0math.pi/wavelength math.tan(theta/2.0)
916	theory.x_bins.append(qx)
917	for i_y in range(size_y):
918	theta = (i_y-center_y)*pixel_width_y / distance
919	qy =4.0math.pi/wavelength math.tan(theta/2.0)
920	theory.y_bins.append(qy)
921
922	theory.group_id ="Model"
923	theory.id ="Model"
924	## determine plot boundaries
925	theory.xmin= -qmax
926	theory.xmax= qmax
927	theory.ymin= -qmax
928	theory.ymax= qmax
929
930
931	def _get_plotting_info(self, data=None):
932	"""
933	get plotting info from data if data !=None
934	else use some default
935	"""
936	my_info = PlotInfo()
937	if data !=None:
938	if hasattr(data,"info"):
939	x_name, x_units = data.get_xaxis()
940	y_name, y_units = data.get_yaxis()
941
942	my_info._xunit = x_units
943	my_info._xaxis = x_name
944	my_info._yunit = y_units
945	my_info._yaxis = y_name
946
947	my_info.title= data.name
948	if hasattr(data, "info"):
949	my_info.info= data.info
950	if hasattr(data, "group_id"):
951	my_info.group_id= data.group_id
952
953	return my_info
954
955	def _complete1D(self, x,y, elapsed,model,data=None):
956	"""
957	Complete plotting 1D data
958	"""
959
960	try:
961
962	new_plot = Theory1D(x=x, y=y)
963	my_info = self._get_plotting_info( data)
964	new_plot.name = model.name
965	new_plot.id = my_info.id
966	new_plot.group_id = my_info.group_id
967
968	new_plot.xaxis( my_info._xaxis, my_info._xunit)
969	new_plot.yaxis( my_info._yaxis, my_info._yunit)
970	if data!=None:
971	if new_plot.id == data.id:
972	new_plot.id += "Model"
973	new_plot.is_data =False
974	# Pass the reset flag to let the plotting event handler
975	# know that we are replacing the whole plot
976	from DataLoader.data_info import Data1D
977	info= Data1D(x= new_plot.x, y=new_plot.y)
978	info.title= new_plot.name
979	title= my_info.title
980	info.xaxis(new_plot._xaxis, new_plot._xunit)
981	info.yaxis( new_plot._yaxis, new_plot._yunit)
982	new_plot.info = info
983	if title== None:
984	title = "Analytical model 1D "
985	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
986	title= str(title), reset=True ))
987	else:
988	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
989	title= str(title)))
990	msg = "Plot 1D complete !"
991	wx.PostEvent( self.parent, StatusEvent( status= msg , type="stop" ))
992	except:
993	msg= " Error occurred when drawing %s Model 1D: "%new_plot.name
994	msg+= " %s"%sys.exc_value
995	wx.PostEvent( self.parent, StatusEvent(status= msg, type="stop" ))
996	return
997
998
999
1000
1001	def _update2D(self, output,time=None):
1002	"""
1003	Update the output of plotting model
1004	"""
1005	wx.PostEvent(self.parent, StatusEvent(status="Plot \
1006	#updating ... ",type="update"))
1007	self.calc_thread.ready(0.01)
1008
1009
1010	def _complete2D(self, image,data, model, elapsed,qmin, qmax,qstep=DEFAULT_NPTS):
1011	"""
1012	Complete get the result of modelthread and create model 2D
1013	that can be plot.
1014	"""
1015
1016
1017	err_image = numpy.zeros(numpy.shape(image))
1018
1019	theory= Data2D(image= image , err_image= err_image)
1020	theory.name= model.name
1021
1022	if data ==None:
1023	self._fill_default_model2D(theory= theory, qmax=qmax,qstep=qstep, qmin= qmin)
1024
1025	else:
1026	theory.id= data.id+"Model"
1027	theory.group_id= data.name+"Model"
1028	theory.x_bins= data.x_bins
1029	theory.y_bins= data.y_bins
1030	theory.detector= data.detector
1031	theory.source= data.source
1032	theory.is_data =False
1033	## plot boundaries
1034	theory.ymin= data.ymin
1035	theory.ymax= data.ymax
1036	theory.xmin= data.xmin
1037	theory.xmax= data.xmax
1038
1039
1040	## plot
1041	wx.PostEvent(self.parent, NewPlotEvent(plot=theory,
1042	title="Analytical model 2D ", reset=True ))
1043	msg = "Plot 2D complete !"
1044	wx.PostEvent( self.parent, StatusEvent( status= msg , type="stop" ))
1045
1046	def _on_data_error(self, event):
1047	"""
1048	receives and event from plotting plu-gins to store the data name and
1049	their errors of y coordinates for 1Data hide and show error
1050	"""
1051	self.err_dy= event.err_dy
1052
1053	def _draw_model2D(self,model,data=None,description=None, enable2D=False,
1054	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep=DEFAULT_NPTS):
1055	"""
1056	draw model in 2D
1057	@param model: instance of the model to draw
1058	@param description: the description of the model
1059	@param enable2D: when True allows to draw model 2D
1060	@param qmin: the minimum value to draw model 2D
1061	@param qmax: the maximum value to draw model 2D
1062	@param qstep: the number of division of Qx and Qy of the model to draw
1063
1064	"""
1065
1066	x= numpy.linspace(start= -1*qmax,
1067	stop= qmax,
1068	num= qstep,
1069	endpoint=True )
1070	y = numpy.linspace(start= -1*qmax,
1071	stop= qmax,
1072	num= qstep,
1073	endpoint=True )
1074	## use data info instead
1075	if data !=None:
1076	## check if data2D to plot
1077	if hasattr(data, "x_bins"):
1078	enable2D = True
1079	x= data.x_bins
1080	y= data.y_bins
1081
1082	if not enable2D:
1083	return
1084	try:
1085	from model_thread import Calc2D
1086	## If a thread is already started, stop it
1087	if self.calc_2D != None and self.calc_2D.isrunning():
1088	self.calc_2D.stop()
1089	self.calc_2D = Calc2D( x= x,
1090	y= y,
1091	model= model,
1092	data = data,
1093	qmin= qmin,
1094	qmax= qmax,
1095	qstep= qstep,
1096	completefn= self._complete2D,
1097	updatefn= self._update2D )
1098	self.calc_2D.queue()
1099
1100	except:
1101	msg= " Error occurred when drawing %s Model 2D: "%model.name
1102	msg+= " %s"%sys.exc_value
1103	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1104	return
1105
1106	def _draw_model1D(self, model, data=None, smearer= None,
1107	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep= DEFAULT_NPTS,enable1D= True):
1108	"""
1109	Draw model 1D from loaded data1D
1110	@param data: loaded data
1111	@param model: the model to plot
1112	"""
1113
1114	x= numpy.linspace(start= qmin,
1115	stop= qmax,
1116	num= qstep,
1117	endpoint=True
1118	)
1119	if data!=None:
1120	## check for data2D
1121	if hasattr(data,"x_bins"):
1122	return
1123	x = data.x
1124	if qmin == DEFAULT_QMIN :
1125	qmin = min(data.x)
1126	if qmax == DEFAULT_QMAX:
1127	qmax = max(data.x)
1128
1129
1130	if not enable1D:
1131	return
1132
1133	try:
1134	from model_thread import Calc1D
1135	## If a thread is already started, stop it
1136	if self.calc_1D!= None and self.calc_1D.isrunning():
1137	self.calc_1D.stop()
1138	self.calc_1D= Calc1D( x= x,
1139	data = data,
1140	model= model,
1141	qmin = qmin,
1142	qmax = qmax,
1143	smearer = smearer,
1144	completefn = self._complete1D,
1145	updatefn = self._update1D )
1146	self.calc_1D.queue()
1147
1148	except:
1149	msg= " Error occurred when drawing %s Model 1D: "%model.name
1150	msg+= " %s"%sys.exc_value
1151	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1152	return
1153
1154
1155
1156
1157
1158	if __name__ == "__main__":
1159	i = Plugin()
1160
1161
1162
1163

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SasView

source: sasview/sansview/perspectives/fitting/fitting.py @ 513115c

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