fitting.py @ 7959f297

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 7959f297 was 60d6c23, checked in by Gervaise Alina <gervyh@…>, 15 years ago
add 1 to compute chsig panel
Property mode set to `100644`
File size: 40.8 KB

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

Note: See TracBrowser for help on using the repository browser.

SasView

source: sasview/sansview/perspectives/fitting/fitting.py @ 7959f297

Download in other formats: