fitting.py @ e65050e

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 e65050e was c3b4dcb, checked in by Gervaise Alina <gervyh@…>, 15 years ago
modify data1D initialization
Property mode set to `100644`
File size: 48.4 KB

Line
1	import re,copy
2	import sys, wx, logging
3	import string, numpy, math
4	import time
5	import thread
6	from danse.common.plottools.plottables import Theory1D
7	from danse.common.plottools.PlotPanel import PlotPanel
8
9	from sans.guiframe.dataFitting import Data2D
10	from sans.guiframe.dataFitting import Data1D
11	from sans.guiframe import dataFitting
12
13	from sans.guicomm.events import NewPlotEvent, StatusEvent
14	from sans.guicomm.events import EVT_SLICER_PANEL,ERR_DATA,EVT_REMOVE_DATA
15	from sans.guicomm.events import EVT_SLICER_PARS_UPDATE
16
17	from sans.fit.AbstractFitEngine import Model
18	from sans.fit.AbstractFitEngine import FitAbort
19
20	from fitproblem import FitProblem
21	from fitpanel import FitPanel
22	from fit_thread import FitThread
23	import models
24	import fitpage
25
26	DEFAULT_BEAM = 0.005
27	DEFAULT_QMIN = 0.0001
28	DEFAULT_QMAX = 0.13
29	DEFAULT_NPTS = 50
30
31	(PageInfoEvent, EVT_PAGE_INFO) = wx.lib.newevent.NewEvent()
32
33
34	class PlotInfo:
35	"""
36	store some plotting field
37	"""
38	_xunit = 'A^{-1}'
39	_xaxis= "\\rm{Q}"
40	_yunit = "cm^{-1}"
41	_yaxis= "\\rm{Intensity} "
42	id = "Model"
43	group_id = "Model"
44	title= None
45	info= None
46
47
48	class Plugin:
49	"""
50	Fitting plugin is used to perform fit
51	"""
52	def __init__(self):
53	## Plug-in name
54	self.sub_menu = "Fitting"
55
56	## Reference to the parent window
57	self.parent = None
58	#Provide list of models existing in the application
59	self.menu_mng = models.ModelManager()
60	## List of panels for the simulation perspective (names)
61	self.perspective = []
62	#list of panel to send to guiframe
63	self.mypanels=[]
64	# reference to the current running thread
65	self.calc_2D= None
66	self.calc_1D= None
67	self.calc_fit= None
68
69	# Start with a good default
70	self.elapsed = 0.022
71	# the type of optimizer selected, park or scipy
72	self.fitter = None
73	#Flag to let the plug-in know that it is running stand alone
74	self.standalone=True
75	## dictionary of page closed and id
76	self.closed_page_dict ={}
77	## Fit engine
78	self._fit_engine = 'scipy'
79	#List of selected data
80	self.selected_data_list=[]
81	## list of slicer panel created to display slicer parameters and results
82	self.slicer_panels=[]
83	# Log startup
84	logging.info("Fitting plug-in started")
85	# model 2D view
86	self.model2D_id=None
87	#keep reference of the simultaneous fit page
88	self.sim_page=None
89	#dictionary containing data name and error on dy of that data
90	self.err_dy={}
91
92
93
94	def populate_menu(self, id, owner):
95	"""
96	Create a menu for the Fitting plug-in
97	@param id: id to create a menu
98	@param owner: owner of menu
99	@ return : list of information to populate the main menu
100	"""
101	#Menu for fitting
102	self.menu1 = wx.Menu()
103
104	#Set park engine
105	id3 = wx.NewId()
106	scipy_help= "Scipy Engine: Perform Simple fit. More in Help window...."
107	self.menu1.AppendCheckItem(id3, "Simple Fit [Scipy]",scipy_help)
108	wx.EVT_MENU(owner, id3, self._onset_engine_scipy)
109
110	id3 = wx.NewId()
111	park_help = "Park Engine: Perform Complex fit. More in Help window...."
112	self.menu1.AppendCheckItem(id3, "Complex Fit [Park]",park_help)
113	wx.EVT_MENU(owner, id3, self._onset_engine_park)
114
115	self.menu1.FindItemByPosition(0).Check(True)
116	self.menu1.FindItemByPosition(1).Check(False)
117
118	self.menu1.AppendSeparator()
119
120	id1 = wx.NewId()
121	simul_help = "Allow to edit fit engine with multiple model and data"
122	self.menu1.Append(id1, '&Simultaneous Page',simul_help)
123	wx.EVT_MENU(owner, id1, self.on_add_sim_page)
124
125	#menu for model
126	menu2 = wx.Menu()
127
128	self.menu_mng.populate_menu(menu2, owner)
129	id2 = wx.NewId()
130	owner.Bind(models.EVT_MODEL,self._on_model_menu)
131
132	self.fit_panel.set_owner(owner)
133	self.fit_panel.set_model_list(self.menu_mng.get_model_list())
134	owner.Bind(fitpage.EVT_MODEL_BOX,self._on_model_panel)
135
136	#create menubar items
137	return [(id, self.menu1, "Fitting"),
138	(id2, menu2, "Model")]
139
140
141	def on_add_sim_page(self, event):
142	"""
143	Create a page to access simultaneous fit option
144	"""
145	Plugin.on_perspective(self,event=event)
146	if self.sim_page !=None:
147	msg= "Simultaneous Fit page already opened"
148	wx.PostEvent(self.parent, StatusEvent(status= msg))
149	return
150
151	self.sim_page= self.fit_panel.add_sim_page()
152
153
154
155	def help(self, evt):
156	"""
157	Show a general help dialog.
158	TODO: replace the text with a nice image
159	"""
160	from helpPanel import HelpWindow
161	frame = HelpWindow(None, -1, 'HelpWindow')
162	frame.Show(True)
163
164
165	def get_context_menu(self, graph=None):
166	"""
167	Get the context menu items available for P(r)
168	@param graph: the Graph object to which we attach the context menu
169	@return: a list of menu items with call-back function
170	"""
171	#TODO: clean this up so that the string are not copied
172	# multiple times.
173	self.graph=graph
174
175	for item in graph.plottables:
176	if item.__class__.__name__ is "Data2D":
177
178	if hasattr(item,"is_data"):
179	if item.is_data:
180	return [["Select data for fitting", \
181	"Dialog with fitting parameters ", self._onSelect]]
182	else:
183	return []
184	return [["Select data for fitting",\
185	"Dialog with fitting parameters ", self._onSelect]]
186	else:
187	if item.name==graph.selected_plottable :
188	if item.name !="$I_{obs}(q)$" and item.name !="$P_{fit}(r)$":
189	if hasattr(item, "group_id"):
190	if hasattr(item,"is_data"):
191	if item.is_data:
192	return [["Select data for fitting", \
193	"Dialog with fitting parameters ", self._onSelect]]
194	else:
195	return []
196	else:
197	return [["Select data for fitting", \
198	"Dialog with fitting parameters ", self._onSelect]]
199	return []
200
201
202	def get_panels(self, parent):
203	"""
204	Create and return a list of panel objects
205	"""
206	self.parent = parent
207	# Creation of the fit panel
208	self.fit_panel = FitPanel(self.parent, -1)
209	#Set the manager for the main panel
210	self.fit_panel.set_manager(self)
211	# List of windows used for the perspective
212	self.perspective = []
213	self.perspective.append(self.fit_panel.window_name)
214	# take care of saving data, model and page associated with each other
215	self.page_finder = {}
216	#index number to create random model name
217	self.index_model = 0
218	self.index_theory= 0
219	self.parent.Bind(EVT_SLICER_PANEL, self._on_slicer_event)
220	self.parent.Bind( ERR_DATA, self._on_data_error)
221	self.parent.Bind(EVT_REMOVE_DATA, self._closed_fitpage)
222	self.parent.Bind(EVT_SLICER_PARS_UPDATE, self._onEVT_SLICER_PANEL)
223	self.parent._mgr.Bind(wx.aui.EVT_AUI_PANE_CLOSE,self._onclearslicer)
224
225
226	#Send the fitting panel to guiframe
227	self.mypanels.append(self.fit_panel)
228	return self.mypanels
229
230
231
232	def get_perspective(self):
233	"""
234	Get the list of panel names for this perspective
235	"""
236	return self.perspective
237
238
239	def on_perspective(self, event):
240	"""
241	Call back function for the perspective menu item.
242	We notify the parent window that the perspective
243	has changed.
244	"""
245	self.parent.set_perspective(self.perspective)
246
247
248	def post_init(self):
249	"""
250	Post initialization call back to close the loose ends
251	[Somehow openGL needs this call]
252	"""
253	self.parent.set_perspective(self.perspective)
254
255
256	def copy_data(self, item, dy=None):
257	"""
258	receive a data 1D and the list of errors on dy
259	and create a new data1D data
260	@param return
261	"""
262	detector=None
263	source=None
264	info = None
265	id=None
266	dxl=None
267	dxw=None
268	dx=None
269	if hasattr(item, "dxl"):
270	dxl = copy.deepcopy(item.dxl)
271	if hasattr(item, "dxw"):
272	dxw = copy.deepcopy(item.dxw)
273	if hasattr(item, "detector"):
274	detector = copy.deepcopy(item.detector)
275	if hasattr(item, "source"):
276	source = copy.deepcopy(item.source)
277	if hasattr(item ,"info"):
278	info= copy.deepcopy(item.info)
279	if hasattr(item,"id"):
280	id = copy.deepcopy(item.id)
281	if hasattr(item, "dx"):
282	dx= item.dx
283
284
285	data= Data1D(x=item.x, y=item.y,dx=dx, dy=dy)
286	data.dxl = dxl
287	data.dxw = dxw
288
289	data.name = item.name
290	data.detector = detector
291	data.source = source
292	## allow to highlight data when plotted
293	data.interactive = copy.deepcopy(item.interactive)
294	## when 2 data have the same id override the 1 st plotted
295	data.id = id
296	## info is a reference to output of dataloader that can be used
297	## to save data 1D as cansas xml file
298	data.info= info
299	## If the data file does not tell us what the axes are, just assume...
300	data.xaxis(copy.deepcopy(item._xaxis),copy.deepcopy(item._xunit))
301	data.yaxis(copy.deepcopy(item._yaxis),copy.deepcopy(item._yunit))
302	##group_id specify on which panel to plot this data
303	data.group_id = item.group_id
304	return data
305
306	def set_fit_range(self, page, qmin, qmax):
307	"""
308	Set the fitting range of a given page
309	"""
310	if page in self.page_finder.iterkeys():
311	fitproblem= self.page_finder[page]
312	fitproblem.set_range(qmin= qmin, qmax= qmax)
313
314	def schedule_for_fit(self,value=0,page=None,fitproblem =None):
315	"""
316	Set the fit problem field to 0 or 1 to schedule that problem to fit.
317	Schedule the specified fitproblem or get the fit problem related to
318	the current page and set value.
319	@param value : integer 0 or 1
320	@param fitproblem: fitproblem to schedule or not to fit
321	"""
322	if fitproblem !=None:
323	fitproblem.schedule_tofit(value)
324	else:
325	if page in self.page_finder.iterkeys():
326	fitproblem= self.page_finder[page]
327	fitproblem.schedule_tofit(value)
328
329
330
331	def get_page_finder(self):
332	""" @return self.page_finder used also by simfitpage.py"""
333	return self.page_finder
334
335
336	def set_page_finder(self,modelname,names,values):
337	"""
338	Used by simfitpage.py to reset a parameter given the string constrainst.
339	@param modelname: the name ot the model for with the parameter has to reset
340	@param value: can be a string in this case.
341	@param names: the paramter name
342	@note: expecting park used for fit.
343	"""
344	sim_page= self.sim_page
345	for page, value in self.page_finder.iteritems():
346	if page != sim_page:
347	list=value.get_model()
348	model = list[0]
349	if model.name== modelname:
350	value.set_model_param(names,values)
351	break
352
353
354
355	def split_string(self,item):
356	"""
357	receive a word containing dot and split it. used to split parameterset
358	name into model name and parameter name example:
359	paramaterset (item) = M1.A
360	@return model_name =M1 , parameter name =A
361	"""
362	if string.find(item,".")!=-1:
363	param_names= re.split("\.",item)
364	model_name=param_names[0]
365	param_name=param_names[1]
366	return model_name,param_name
367
368
369	def stop_fit(self):
370	"""
371	Stop the fit engine
372	"""
373	if self.calc_fit!= None and self.calc_fit.isrunning():
374	self.calc_fit.stop()
375	wx.PostEvent(self.parent, StatusEvent(status="Fitting \
376	is cancelled" , type="stop"))
377
378
379
380	def set_smearer(self,smearer, qmin=None, qmax=None):
381	"""
382	Get a smear object and store it to a fit problem
383	@param smearer: smear object to allow smearing data
384	"""
385	current_pg=self.fit_panel.get_current_page()
386	self.page_finder[current_pg].set_smearer(smearer)
387	## draw model 1D with smeared data
388	data = self.page_finder[current_pg].get_plotted_data()
389	model = self.page_finder[current_pg].get_model()
390	## if user has already selected a model to plot
391	## redraw the model with data smeared
392
393	smear =self.page_finder[current_pg].get_smearer()
394	self.draw_model( model=model, data= data, smearer= smear,
395	qmin= qmin, qmax= qmax)
396
397
398
399	def draw_model(self, model, data= None,smearer= None,
400	enable1D= True, enable2D= False,
401	qmin= DEFAULT_QMIN, qmax= DEFAULT_QMAX, qstep= DEFAULT_NPTS):
402	"""
403	Draw model.
404	@param model: the model to draw
405	@param name: the name of the model to draw
406	@param data: the data on which the model is based to be drawn
407	@param description: model's description
408	@param enable1D: if true enable drawing model 1D
409	@param enable2D: if true enable drawing model 2D
410	@param qmin: Range's minimum value to draw model
411	@param qmax: Range's maximum value to draw model
412	@param qstep: number of step to divide the x and y-axis
413
414	"""
415	## draw model 1D with no loaded data
416	self._draw_model1D( model= model, data= data,enable1D=enable1D, smearer= smearer,
417	qmin= qmin, qmax= qmax, qstep= qstep )
418	## draw model 2D with no initial data
419	self._draw_model2D(model=model,
420	data = data,
421	enable2D= enable2D,
422	qmin=qmin,
423	qmax=qmax,
424	qstep=qstep)
425
426
427
428	def onFit(self):
429	"""
430	perform fit
431	"""
432	## count the number of fitproblem schedule to fit
433	fitproblem_count= 0
434	for value in self.page_finder.itervalues():
435	if value.get_scheduled()==1:
436	fitproblem_count += 1
437
438	## if simultaneous fit change automatically the engine to park
439	if fitproblem_count >1:
440	self._on_change_engine(engine='park')
441
442	from sans.fit.Fitting import Fit
443	self.fitter= Fit(self._fit_engine)
444
445	if self._fit_engine=="park":
446	engineType="Simultaneous Fit"
447	else:
448	engineType="Single Fit"
449
450	fproblemId = 0
451	current_pg=None
452	for page, value in self.page_finder.iteritems():
453	try:
454	if value.get_scheduled()==1:
455	#Get list of parameters name to fit
456	pars = []
457	templist = []
458	templist = page.get_param_list()
459	for element in templist:
460	name = str(element[1])
461	pars.append(name)
462	#Set Engine (model , data) related to the page on
463	self._fit_helper( current_pg=page, value=value,pars=pars,
464	id=fproblemId, title= engineType )
465	fproblemId += 1
466	current_pg= page
467	except:
468	msg= "%s error: %s" % (engineType,sys.exc_value)
469	wx.PostEvent(self.parent, StatusEvent(status= msg ))
470	return
471	#Do the simultaneous fit
472	try:
473	## If a thread is already started, stop it
474	if self.calc_fit!= None and self.calc_fit.isrunning():
475	self.calc_fit.stop()
476
477	wx.PostEvent(self.parent, StatusEvent(status="Start the computation",
478	curr_thread=self.calc_fit,type="start"))
479	wx.PostEvent(self.parent, StatusEvent(status="Computing...",
480	curr_thread=self.calc_fit,type="progress"))
481	## perform single fit
482	if self._fit_engine=="scipy":
483	qmin, qmax= current_pg.get_range()
484	self.calc_fit=FitThread(parent =self.parent,
485	fn= self.fitter,
486	cpage=current_pg,
487	pars= pars,
488	completefn= self._single_fit_completed,
489	updatefn=self._updateFit)
490
491	else:
492	## Perform more than 1 fit at the time
493	self.calc_fit=FitThread(parent =self.parent,
494	fn= self.fitter,
495	completefn= self._simul_fit_completed,
496	updatefn=self._updateFit)
497	self.calc_fit.queue()
498	self.calc_fit.ready(2.5)
499
500	except FitAbort:
501	print "in pluging"
502	except:
503	msg= "%s error: %s" % (engineType,sys.exc_value)
504	wx.PostEvent(self.parent, StatusEvent(status= msg ,type="stop"))
505	return
506
507
508
509	def _onEVT_SLICER_PANEL(self, event):
510	"""
511	receive and event telling to update a panel with a name starting with
512	event.panel_name. this method update slicer panel for a given interactor.
513	@param event: contains type of slicer , paramaters for updating the panel
514	and panel_name to find the slicer 's panel concerned.
515	"""
516
517	for item in self.parent.panels:
518	if self.parent.panels[item].window_caption.startswith(event.panel_name):
519	self.parent.panels[item].set_slicer(event.type, event.params)
520
521	self.parent._mgr.Update()
522
523
524
525	def _closed_fitpage(self, event):
526	"""
527	request fitpanel to close a given page when its unique data is removed
528	from the plot
529	"""
530	self.fit_panel._close_fitpage(event.data)
531
532
533	def _add_page_onmenu(self, name,fitproblem=None):
534	"""
535	Add name of a closed page of fitpanel in a menu
536	"""
537	list = self.menu1.GetMenuItems()
538	for item in list:
539	if name == item.GetItemLabel():
540	self.closed_page_dict[name][1] = fitproblem
541
542	if not name in self.closed_page_dict.keys():
543	# Post paramters
544	event_id = wx.NewId()
545	self.menu1.Append(event_id, name, "Show %s fit panel" % name)
546	self.closed_page_dict[name]= [event_id, fitproblem]
547	wx.EVT_MENU(self.parent,event_id, self._open_closed_page)
548
549
550	def _open_closed_page(self, event):
551	"""
552	reopen a closed page
553	"""
554	for name, value in self.closed_page_dict.iteritems():
555	if event.GetId() in value:
556	id,fitproblem = value
557	if name !="Model":
558	data= fitproblem.get_fit_data()
559	page = self.fit_panel.add_fit_page(data= data,reset=True)
560	if fitproblem != None:
561	self.page_finder[page]=fitproblem
562	if self.sim_page != None:
563	self.sim_page.draw_page()
564
565	else:
566	model = fitproblem
567	self.fit_panel.add_model_page(model=model, topmenu=True,
568	reset= True)
569	break
570
571
572	def _reset_schedule_problem(self, value=0):
573	"""
574	unschedule or schedule all fitproblem to be fit
575	"""
576	for page, fitproblem in self.page_finder.iteritems():
577	fitproblem.schedule_tofit(value)
578
579	def _fit_helper(self,current_pg,pars,value, id, title="Single Fit " ):
580	"""
581	helper for fitting
582	"""
583	metadata = value.get_fit_data()
584	model = value.get_model()
585	smearer = value.get_smearer()
586	qmin , qmax = value.get_range()
587	self.fit_id =id
588	#Create list of parameters for fitting used
589	templist=[]
590	pars=pars
591	try:
592	## create a park model and reset parameter value if constraint
593	## is given
594	new_model = Model(model)
595	param = value.get_model_param()
596	if len(param)>0:
597	for item in param:
598	param_value = item[1]
599	param_name = item[0]
600	## check if constraint
601	if param_value !=None and param_name != None:
602	new_model.parameterset[ param_name].set( param_value )
603
604	#Do the single fit
605	self.fitter.set_model(new_model, self.fit_id, pars)
606
607	self.fitter.set_data(data=metadata,Uid=self.fit_id,
608	smearer=smearer,qmin= qmin,qmax=qmax )
609
610	self.fitter.select_problem_for_fit(Uid= self.fit_id,
611	value= value.get_scheduled())
612	value.clear_model_param()
613	except:
614	msg= title +" error: %s" % sys.exc_value
615	wx.PostEvent(self.parent, StatusEvent(status= msg, type="stop"))
616	return
617
618	def _onSelect(self,event):
619	"""
620	when Select data to fit a new page is created .Its reference is
621	added to self.page_finder
622	"""
623	self.panel = event.GetEventObject()
624	Plugin.on_perspective(self,event=event)
625	for plottable in self.panel.graph.plottables:
626	if plottable.name == self.panel.graph.selected_plottable:
627	#if not hasattr(plottable, "is_data"):
628
629	if plottable.__class__.__name__=="Theory1D":
630	dy=numpy.zeros(len(plottable.y))
631	if hasattr(plottable, "dy"):
632	dy= copy.deepcopy(plottable.dy)
633
634	item= self.copy_data(plottable, dy)
635	item.group_id += "data1D"
636	item.id +="data1D"
637	item.is_data= False
638	title = item.name
639	wx.PostEvent(self.parent, NewPlotEvent(plot=item, title=str(title)))
640	else:
641	item= self.copy_data(plottable, plottable.dy)
642	item.is_data=True
643
644	## put the errors values back to the model if the errors were hiden
645	## before sending them to the fit engine
646	if len(self.err_dy)>0:
647	if item.name in self.err_dy.iterkeys():
648	dy= self.err_dy[item.name]
649	data= self.copy_data(item, dy)
650	data.is_data= item.is_data
651	else:
652	data= self.copy_data(item, item.dy)
653	data.is_data= item.is_data
654
655
656	else:
657	if item.dy==None:
658	dy= numpy.zeros(len(item.y))
659	data= self.copy_data(item, dy)
660	data.is_data=item.is_data
661	else:
662	data= self.copy_data(item,item.dy)
663	data.is_data=item.is_data
664
665	else:
666	if plottable.__class__.__name__ !="Data2D":
667	return
668	## Data2D case
669	if not hasattr(plottable, "is_data"):
670	item= copy.deepcopy(plottable)
671	item.group_id += "data2D"
672	item.id +="data2D"
673	item.is_data= False
674	title = item.name
675	title += " Fit"
676	data = item
677	wx.PostEvent(self.parent, NewPlotEvent(plot=item, title=str(title)))
678	else:
679	item= copy.deepcopy(plottable )
680	data= copy.deepcopy(plottable )
681	item.is_data=True
682	data.is_data=True
683
684
685	## create anew page
686	if item.name == self.panel.graph.selected_plottable or\
687	item.__class__.__name__ is "Data2D":
688	try:
689	page = self.fit_panel.add_fit_page(data)
690	# add data associated to the page created
691	if page !=None:
692	#create a fitproblem storing all link to data,model,page creation
693	if not page in self.page_finder.keys():
694	self.page_finder[page]= FitProblem()
695	## item is almost the same as data but contains
696	## axis info for plotting
697	self.page_finder[page].add_plotted_data(item)
698	self.page_finder[page].add_fit_data(data)
699
700	wx.PostEvent(self.parent, StatusEvent(status="Page Created"))
701	else:
702	wx.PostEvent(self.parent, StatusEvent(status="Page was already Created"))
703	except:
704	wx.PostEvent(self.parent, StatusEvent(status="Creating Fit page: %s"\
705	%sys.exc_value))
706	return
707
708
709	def _updateFit(self):
710	"""
711	Is called when values of result are available
712	"""
713	##Sending a progess message to the status bar
714	wx.PostEvent(self.parent, StatusEvent(status="Computing..."))
715
716	def _single_fit_completed(self,result,pars,cpage, elapsed=None):
717	"""
718	Display fit result on one page of the notebook.
719	@param result: result of fit
720	@param pars: list of names of parameters fitted
721	@param current_pg: the page where information will be displayed
722	@param qmin: the minimum value of x to replot the model
723	@param qmax: the maximum value of x to replot model
724
725	"""
726	wx.PostEvent(self.parent, StatusEvent(status="Single fit \
727	complete! " ))
728
729	try:
730	if result ==None:
731	msg= "Simple Fitting Stop !!!"
732	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
733	return
734	if numpy.any(result.pvec ==None )or not numpy.all(numpy.isfinite(result.pvec) ):
735	msg= "Single Fitting did not converge!!!"
736	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
737	return
738	for page, value in self.page_finder.iteritems():
739	if page==cpage :
740	model= value.get_model()
741	break
742	i = 0
743	for name in pars:
744	if result.pvec.__class__==numpy.float64:
745	model.setParam(name,result.pvec)
746	else:
747	model.setParam(name,result.pvec[i])
748	i += 1
749	## Reset values of the current page to fit result
750	cpage.onsetValues(result.fitness, result.pvec,result.stderr)
751	## plot the current model with new param
752	metadata = self.page_finder[cpage].get_fit_data()
753	model = self.page_finder[cpage].get_model()
754	qmin, qmax= self.page_finder[cpage].get_range()
755	smearer =self.page_finder[cpage].get_smearer()
756	#Replot models
757	msg= "Single Fit completed. plotting... %s:"%model.name
758	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
759	self.draw_model( model=model, data= metadata, smearer= smearer,
760	qmin= qmin, qmax= qmax)
761	wx.PostEvent(self.parent, StatusEvent(status=" " , type="stop"))
762	except:
763	msg= "Single Fit completed but Following error occurred:%s"% sys.exc_value
764	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
765	return
766
767
768	def _simul_fit_completed(self,result,pars=None,cpage=None, elapsed=None):
769	"""
770	Parameter estimation completed,
771	display the results to the user
772	@param alpha: estimated best alpha
773	@param elapsed: computation time
774	"""
775	wx.PostEvent(self.parent, StatusEvent(status="Simultaneous fit complete "))
776
777	## fit more than 1 model at the same time
778	try:
779	if result ==None:
780	msg= "Complex Fitting Stop !!!"
781	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
782	return
783	if numpy.any(result.pvec ==None )or not numpy.all(numpy.isfinite(result.pvec) ):
784	msg= "Single Fitting did not converge!!!"
785	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
786	return
787	for page, value in self.page_finder.iteritems():
788	if value.get_scheduled()==1:
789	model = value.get_model()
790	metadata = value.get_plotted_data()
791	small_out = []
792	small_cov = []
793	i = 0
794	#Separate result in to data corresponding to each page
795	for p in result.parameters:
796	model_name,param_name = self.split_string(p.name)
797	if model.name == model_name:
798	p_name= model.name+"."+param_name
799	if p.name == p_name:
800	small_out.append(p.value )
801	model.setParam(param_name,p.value)
802
803	small_cov.append(p.stderr)
804	else:
805	value= model.getParam(param_name)
806	small_out.append(value )
807	small_cov.append(None)
808	# Display result on each page
809	page.onsetValues(result.fitness, small_out,small_cov)
810	#Replot models
811	msg= "Simultaneous Fit completed. plotting... %s:"%model.name
812	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
813	qmin, qmax= page.get_range()
814	smearer =self.page_finder[page].get_smearer()
815	self.draw_model( model=model, data= metadata, smearer=smearer,
816	qmin= qmin, qmax= qmax)
817	wx.PostEvent(self.parent, StatusEvent(status="", type="stop"))
818	except:
819	msg= "Simultaneous Fit completed"
820	msg +=" but Following error occurred:%s"%sys.exc_value
821	wx.PostEvent(self.parent, StatusEvent(status=msg,type="stop"))
822	return
823
824
825
826	def _on_show_panel(self, event):
827	print "_on_show_panel: fitting"
828
829
830	def _onset_engine_park(self,event):
831	"""
832	set engine to park
833	"""
834	self._on_change_engine('park')
835
836
837	def _onset_engine_scipy(self,event):
838	"""
839	set engine to scipy
840	"""
841	self._on_change_engine('scipy')
842
843	def _on_slicer_event(self, event):
844	"""
845	Receive a panel as event and send it to guiframe
846	@param event: event containing a panel
847	"""
848
849	if event.panel!=None:
850	new_panel = event.panel
851	self.slicer_panels.append(event.panel)
852	# Set group ID if available
853	event_id = self.parent.popup_panel(new_panel)
854	#self.menu3.Append(event_id, new_panel.window_caption,
855	# "Show %s plot panel" % new_panel.window_caption)
856	# Set UID to allow us to reference the panel later
857
858	new_panel.uid = event_id
859	self.mypanels.append(new_panel)
860	return
861
862	def _onclearslicer(self, event):
863	"""
864	Clear the boxslicer when close the panel associate with this slicer
865	"""
866	name =event.GetPane().caption
867
868	for panel in self.slicer_panels:
869	if panel.window_caption==name:
870
871	for item in self.parent.panels:
872	if hasattr(self.parent.panels[item],"uid"):
873	if self.parent.panels[item].uid ==panel.base.uid:
874	self.parent.panels[item].onClearSlicer(event)
875	self.parent._mgr.Update()
876	break
877	break
878
879
880
881
882	def _return_engine_type(self):
883	"""
884	return the current type of engine
885	"""
886	return self._fit_engine
887
888
889	def _on_change_engine(self, engine='park'):
890	"""
891	Allow to select the type of engine to perform fit
892	@param engine: the key work of the engine
893	"""
894	## saving fit engine name
895	self._fit_engine = engine
896	## change menu item state
897	if engine=="park":
898	self.menu1.FindItemByPosition(0).Check(False)
899	self.menu1.FindItemByPosition(1).Check(True)
900	else:
901	self.menu1.FindItemByPosition(0).Check(True)
902	self.menu1.FindItemByPosition(1).Check(False)
903
904	## post a message to status bar
905	wx.PostEvent(self.parent, StatusEvent(status="Engine set to: %s" % self._fit_engine))
906
907	## Bind every open fit page with a newevent to know the current fitting engine
908	import fitpage
909	event= fitpage.FitterTypeEvent()
910	event.type = self._fit_engine
911	for key in self.page_finder.keys():
912	wx.PostEvent(key, event)
913
914
915	def _on_model_panel(self, evt):
916	"""
917	react to model selection on any combo box or model menu.plot the model
918	@param evt: wx.combobox event
919	"""
920	model = evt.model
921
922	if model ==None:
923	return
924
925	current_pg = self.fit_panel.get_current_page()
926	## make sure nothing is done on self.sim_page
927	## example trying to call set_panel on self.sim_page
928	if current_pg != self.sim_page :
929
930	if self.page_finder[current_pg].get_model()== None :
931
932	model.name="M"+str(self.index_model)
933	self.index_model += 1
934	else:
935	model.name= self.page_finder[current_pg].get_model().name
936
937	metadata = self.page_finder[current_pg].get_plotted_data()
938
939	# save the name containing the data name with the appropriate model
940	self.page_finder[current_pg].set_model(model)
941	qmin, qmax= current_pg.get_range()
942	self.page_finder[current_pg].set_range(qmin=qmin, qmax=qmax)
943	smearer= self.page_finder[current_pg].get_smearer()
944	# save model name
945	self.draw_model( model=model,smearer=smearer,
946	data= metadata, qmin=qmin, qmax=qmax)
947
948	if self.sim_page!=None:
949	self.sim_page.draw_page()
950
951
952
953	def _on_model_menu(self, evt):
954	"""
955	Plot a theory from a model selected from the menu
956	@param evt: wx.menu event
957	"""
958	model = evt.model
959	Plugin.on_perspective(self,event=evt)
960	# Create a model page. If a new page is created, the model
961	# will be plotted automatically. If a page already exists,
962	# the content will be updated and the plot refreshed
963	self.fit_panel.add_model_page(model,topmenu=True)
964
965
966
967
968	def _update1D(self,x, output):
969	"""
970	Update the output of plotting model 1D
971	"""
972	wx.PostEvent(self.parent, StatusEvent(status="Plot \
973	#updating ... ",type="update"))
974	self.calc_thread.ready(0.01)
975
976
977	def _fill_default_model2D(self, theory, qmax,qstep, qmin=None):
978	"""
979	fill Data2D with default value
980	@param theory: Data2D to fill
981	"""
982	from DataLoader.data_info import Detector, Source
983
984	detector = Detector()
985	theory.detector.append(detector)
986
987	theory.detector[0].distance=1e+32
988	theory.source= Source()
989	theory.source.wavelength=2*math.pi/1e+32
990
991	## Create detector for Model 2D
992	xmax=2theory.detector[0].distancemath.atan(\
993	qmax/(4*math.pi/theory.source.wavelength))
994
995	theory.detector[0].pixel_size.x= xmax/(qstep/2-0.5)
996	theory.detector[0].pixel_size.y= xmax/(qstep/2-0.5)
997	theory.detector[0].beam_center.x= qmax
998	theory.detector[0].beam_center.y= qmax
999	## create x_bins and y_bins of the model 2D
1000	distance = theory.detector[0].distance
1001	pixel = qstep/2-1
1002	theta = pixel / distance / qstep#100.0
1003	wavelength = theory.source.wavelength
1004	pixel_width_x = theory.detector[0].pixel_size.x
1005	pixel_width_y = theory.detector[0].pixel_size.y
1006	center_x = theory.detector[0].beam_center.x/pixel_width_x
1007	center_y = theory.detector[0].beam_center.y/pixel_width_y
1008
1009
1010	size_x, size_y= numpy.shape(theory.data)
1011	for i_x in range(size_x):
1012	theta = (i_x-center_x)*pixel_width_x / distance
1013	qx = 4.0math.pi/wavelength math.tan(theta/2.0)
1014	theory.x_bins.append(qx)
1015	for i_y in range(size_y):
1016	theta = (i_y-center_y)*pixel_width_y / distance
1017	qy =4.0math.pi/wavelength math.tan(theta/2.0)
1018	theory.y_bins.append(qy)
1019
1020	theory.group_id ="Model"
1021	theory.id ="Model"
1022	## determine plot boundaries
1023	theory.xmin= -qmax
1024	theory.xmax= qmax
1025	theory.ymin= -qmax
1026	theory.ymax= qmax
1027
1028
1029	def _get_plotting_info(self, data=None):
1030	"""
1031	get plotting info from data if data !=None
1032	else use some default
1033	"""
1034	my_info = PlotInfo()
1035	if data !=None:
1036	if hasattr(data,"info"):
1037	x_name, x_units = data.get_xaxis()
1038	y_name, y_units = data.get_yaxis()
1039
1040	my_info._xunit = x_units
1041	my_info._xaxis = x_name
1042	my_info._yunit = y_units
1043	my_info._yaxis = y_name
1044
1045	my_info.title= data.name
1046	if hasattr(data, "info"):
1047	my_info.info= data.info
1048	if hasattr(data, "group_id"):
1049	my_info.group_id= data.group_id
1050
1051	return my_info
1052
1053
1054	def _complete1D(self, x,y, elapsed,model,data=None):
1055	"""
1056	Complete plotting 1D data
1057	"""
1058
1059	try:
1060
1061	new_plot = Theory1D(x=x, y=y)
1062	my_info = self._get_plotting_info( data)
1063	new_plot.name = model.name
1064	new_plot.id = my_info.id
1065	new_plot.group_id = my_info.group_id
1066
1067	new_plot.xaxis( my_info._xaxis, my_info._xunit)
1068	new_plot.yaxis( my_info._yaxis, my_info._yunit)
1069	if data!=None:
1070	if new_plot.id == data.id:
1071	new_plot.id += "Model"
1072	new_plot.is_data =False
1073
1074	from DataLoader import data_info
1075	info= Data1D(x= new_plot.x, y=new_plot.y)
1076	info.title= new_plot.name
1077	title= my_info.title
1078	info.xaxis(new_plot._xaxis, new_plot._xunit)
1079	info.yaxis( new_plot._yaxis, new_plot._yunit)
1080	new_plot.info = info
1081	# Pass the reset flag to let the plotting event handler
1082	# know that we are replacing the whole plot
1083	if title== None:
1084	title = "Analytical model 1D "
1085	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
1086	title= str(title), reset=True ))
1087	else:
1088	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
1089	title= str(title)))
1090	msg = "Plot 1D complete !"
1091	wx.PostEvent( self.parent, StatusEvent( status= msg , type="stop" ))
1092	except:
1093	msg= " Error occurred when drawing %s Model 1D: "%new_plot.name
1094	msg+= " %s"%sys.exc_value
1095	wx.PostEvent( self.parent, StatusEvent(status= msg, type="stop" ))
1096	return
1097
1098
1099
1100	def _update2D(self, output,time=None):
1101	"""
1102	Update the output of plotting model
1103	"""
1104	wx.PostEvent(self.parent, StatusEvent(status="Plot \
1105	#updating ... ",type="update"))
1106	self.calc_thread.ready(0.01)
1107
1108
1109	def _complete2D(self, image,data, model, elapsed,qmin, qmax,qstep=DEFAULT_NPTS):
1110	"""
1111	Complete get the result of modelthread and create model 2D
1112	that can be plot.
1113	"""
1114
1115
1116	err_image = numpy.zeros(numpy.shape(image))
1117
1118	theory= Data2D(image= image , err_image= err_image)
1119	theory.name= model.name
1120
1121	if data ==None:
1122	self._fill_default_model2D(theory= theory, qmax=qmax,qstep=qstep, qmin= qmin)
1123
1124	else:
1125	theory.id= data.id+"Model"
1126	theory.group_id= data.name+"Model"
1127	theory.x_bins= data.x_bins
1128	theory.y_bins= data.y_bins
1129	theory.detector= data.detector
1130	theory.source= data.source
1131	theory.is_data =False
1132	## plot boundaries
1133	theory.ymin= data.ymin
1134	theory.ymax= data.ymax
1135	theory.xmin= data.xmin
1136	theory.xmax= data.xmax
1137
1138
1139	## plot
1140	wx.PostEvent(self.parent, NewPlotEvent(plot=theory,
1141	title="Analytical model 2D ", reset=True ))
1142	msg = "Plot 2D complete !"
1143	wx.PostEvent( self.parent, StatusEvent( status= msg , type="stop" ))
1144
1145	def _on_data_error(self, event):
1146	"""
1147	receives and event from plotting plu-gins to store the data name and
1148	their errors of y coordinates for 1Data hide and show error
1149	"""
1150	self.err_dy= event.err_dy
1151
1152
1153	def _draw_model2D(self,model,data=None,description=None, enable2D=False,
1154	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep=DEFAULT_NPTS):
1155	"""
1156	draw model in 2D
1157	@param model: instance of the model to draw
1158	@param description: the description of the model
1159	@param enable2D: when True allows to draw model 2D
1160	@param qmin: the minimum value to draw model 2D
1161	@param qmax: the maximum value to draw model 2D
1162	@param qstep: the number of division of Qx and Qy of the model to draw
1163
1164	"""
1165	x= numpy.linspace(start= -1*qmax,
1166	stop= qmax,
1167	num= qstep,
1168	endpoint=True )
1169	y = numpy.linspace(start= -1*qmax,
1170	stop= qmax,
1171	num= qstep,
1172	endpoint=True )
1173	## use data info instead
1174	if data !=None:
1175	## check if data2D to plot
1176	if hasattr(data, "x_bins"):
1177	enable2D = True
1178	x= data.x_bins
1179	y= data.y_bins
1180
1181	if not enable2D:
1182	return
1183	try:
1184	from model_thread import Calc2D
1185	## If a thread is already started, stop it
1186	if self.calc_2D != None and self.calc_2D.isrunning():
1187	self.calc_2D.stop()
1188	self.calc_2D = Calc2D( x= x,
1189	y= y,
1190	model= model,
1191	data = data,
1192	qmin= qmin,
1193	qmax= qmax,
1194	qstep= qstep,
1195	completefn= self._complete2D,
1196	updatefn= self._update2D )
1197	self.calc_2D.queue()
1198
1199	except:
1200	msg= " Error occurred when drawing %s Model 2D: "%model.name
1201	msg+= " %s"%sys.exc_value
1202	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1203	return
1204
1205	def _draw_model1D(self, model, data=None, smearer= None,
1206	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep= DEFAULT_NPTS,enable1D= True):
1207	"""
1208	Draw model 1D from loaded data1D
1209	@param data: loaded data
1210	@param model: the model to plot
1211	"""
1212
1213	x= numpy.linspace(start= qmin,
1214	stop= qmax,
1215	num= qstep,
1216	endpoint=True
1217	)
1218	if data!=None:
1219	## check for data2D
1220	if hasattr(data,"x_bins"):
1221	return
1222	x = data.x
1223	if qmin == DEFAULT_QMIN :
1224	qmin = min(data.x)
1225	if qmax == DEFAULT_QMAX:
1226	qmax = max(data.x)
1227
1228
1229	if not enable1D:
1230	return
1231
1232	try:
1233	from model_thread import Calc1D
1234	## If a thread is already started, stop it
1235	if self.calc_1D!= None and self.calc_1D.isrunning():
1236	self.calc_1D.stop()
1237	self.calc_1D= Calc1D( x= x,
1238	data = data,
1239	model= model,
1240	qmin = qmin,
1241	qmax = qmax,
1242	smearer = smearer,
1243	completefn = self._complete1D,
1244	updatefn = self._update1D )
1245	self.calc_1D.queue()
1246
1247	except:
1248	msg= " Error occurred when drawing %s Model 1D: "%model.name
1249	msg+= " %s"%sys.exc_value
1250	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1251	return
1252
1253
1254	if __name__ == "__main__":
1255	i = Plugin()
1256
1257
1258
1259

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SasView

source: sasview/sansview/perspectives/fitting/fitting.py @ e65050e

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