fitting.py @ 6f023e8

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 6f023e8 was 6f023e8, checked in by Gervaise Alina <gervyh@…>, 15 years ago
simultaneous fit and single fit combine fix
Property mode set to `100644`
File size: 39.0 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	(PageInfoEvent, EVT_PAGE_INFO) = wx.lib.newevent.NewEvent()
26	class PlotInfo:
27	"""
28	store some plotting field
29	"""
30	_xunit = 'A^{-1}'
31	_xaxis= "\\rm{Q}"
32	_yunit = "cm^{-1}"
33	_yaxis= "\\rm{Intensity} "
34	id = "Model"
35	group_id = "Model"
36	title= None
37	info= None
38
39
40	class Plugin:
41	"""
42	Fitting plugin is used to perform fit
43	"""
44	def __init__(self):
45	## Plug-in name
46	self.sub_menu = "Fitting"
47
48	## Reference to the parent window
49	self.parent = None
50	#Provide list of models existing in the application
51	self.menu_mng = models.ModelManager()
52	## List of panels for the simulation perspective (names)
53	self.perspective = []
54	#list of panel to send to guiframe
55	self.mypanels=[]
56	# reference to the current running thread
57	self.calc_2D= None
58	self.calc_1D= None
59	self.calc_fit= None
60
61	# Start with a good default
62	self.elapsed = 0.022
63	# the type of optimizer selected, park or scipy
64	self.fitter = None
65	#Flag to let the plug-in know that it is running stand alone
66	self.standalone=True
67	## dictionary of page closed and id
68	self.closed_page_dict ={}
69	## Fit engine
70	self._fit_engine = 'scipy'
71	#List of selected data
72	self.selected_data_list=[]
73	# Log startup
74	logging.info("Fitting plug-in started")
75	# model 2D view
76	self.model2D_id=None
77	#keep reference of the simultaneous fit page
78	self.sim_page=None
79	#dictionary containing data name and error on dy of that data
80	self.err_dy={}
81
82
83
84	def populate_menu(self, id, owner):
85	"""
86	Create a menu for the Fitting plug-in
87	@param id: id to create a menu
88	@param owner: owner of menu
89	@ return : list of information to populate the main menu
90	"""
91	#Menu for fitting
92	self.menu1 = wx.Menu()
93
94	#Set park engine
95	id3 = wx.NewId()
96	scipy_help= "Scipy Engine: Perform Simple fit. More in Help window...."
97	#self.menu1.Append(id3, "Scipy",scipy_help)
98	self.menu1.AppendCheckItem(id3, "Scipy",scipy_help)
99	wx.EVT_MENU(owner, id3, self._onset_engine_scipy)
100
101	id3 = wx.NewId()
102	park_help = "Park Engine: Perform Complex fit. More in Help window...."
103	self.menu1.AppendCheckItem(id3, "Park",park_help)
104	wx.EVT_MENU(owner, id3, self._onset_engine_park)
105	self.menu1.AppendSeparator()
106
107	id1 = wx.NewId()
108	simul_help = "Allow to edit fit engine with multiple model and data"
109	self.menu1.Append(id1, '&Simultaneous page',simul_help)
110	wx.EVT_MENU(owner, id1, self.on_add_sim_page)
111
112	#menu for model
113	menu2 = wx.Menu()
114
115	self.menu_mng.populate_menu(menu2, owner)
116	id2 = wx.NewId()
117	owner.Bind(models.EVT_MODEL,self._on_model_menu)
118
119	self.fit_panel.set_owner(owner)
120	self.fit_panel.set_model_list(self.menu_mng.get_model_list())
121	owner.Bind(fitpage.EVT_MODEL_BOX,self._on_model_panel)
122
123	self.menu3= wx.Menu()
124	id4 = wx.NewId()
125
126	#create menubar items
127	return [(id, self.menu1, "Fitting"),
128	(id4,self.menu3,"Averagers"),
129	(id2, menu2, "Model")]
130
131	def on_add_sim_page(self, event):
132	"""
133	Create a page to access simultaneous fit option
134	"""
135	if self.sim_page !=None:
136	msg= "Simultaneous Fit page already opened"
137	wx.PostEvent(self.parent, StatusEvent(status= msg))
138	return
139
140	self.sim_page= self.fit_panel.add_sim_page()
141
142
143
144	def help(self, evt):
145	"""
146	Show a general help dialog.
147	TODO: replace the text with a nice image
148	"""
149	from helpPanel import HelpWindow
150	frame = HelpWindow(None, -1, 'HelpWindow')
151	frame.Show(True)
152
153
154	def get_context_menu(self, graph=None):
155	"""
156	Get the context menu items available for P(r)
157	@param graph: the Graph object to which we attach the context menu
158	@return: a list of menu items with call-back function
159	"""
160	self.graph=graph
161	for item in graph.plottables:
162	if item.__class__.__name__ is "Data2D":
163	return [["Select data for Fitting",\
164	"Dialog with fitting parameters ", self._onSelect]]
165	else:
166
167	if item.name==graph.selected_plottable :
168	if not hasattr(item, "group_id"):
169	return []
170	return [["Select data for Fitting", \
171	"Dialog with fitting parameters ", self._onSelect]]
172	return []
173
174
175	def get_panels(self, parent):
176	"""
177	Create and return a list of panel objects
178	"""
179	self.parent = parent
180	# Creation of the fit panel
181	self.fit_panel = FitPanel(self.parent, -1)
182	#Set the manager for the main panel
183	self.fit_panel.set_manager(self)
184	# List of windows used for the perspective
185	self.perspective = []
186	self.perspective.append(self.fit_panel.window_name)
187	# take care of saving data, model and page associated with each other
188	self.page_finder = {}
189	#index number to create random model name
190	self.index_model = 0
191	self.index_theory= 0
192	self.parent.Bind(EVT_SLICER_PANEL, self._on_slicer_event)
193	self.parent.Bind( ERR_DATA, self._on_data_error)
194
195	#Send the fitting panel to guiframe
196	self.mypanels.append(self.fit_panel)
197	return self.mypanels
198
199
200
201	def get_perspective(self):
202	"""
203	Get the list of panel names for this perspective
204	"""
205	return self.perspective
206
207
208	def on_perspective(self, event):
209	"""
210	Call back function for the perspective menu item.
211	We notify the parent window that the perspective
212	has changed.
213	"""
214	self.parent.set_perspective(self.perspective)
215
216
217	def post_init(self):
218	"""
219	Post initialization call back to close the loose ends
220	[Somehow openGL needs this call]
221	"""
222	self.parent.set_perspective(self.perspective)
223
224
225	def copy_data(self, item, dy):
226	"""
227	receive a data 1D and the list of errors on dy
228	and create a new data1D data
229	@param return
230	"""
231	detector=None
232	source=None
233	dxl=None
234	dxw=None
235	if hasattr(item, "dxl"):
236	dxl = item.dxl
237	if hasattr(item, "dxw"):
238	dxw = item.dxw
239	if hasattr(item, "detector"):
240	detector =item.detector
241	if hasattr(item, "source"):
242	source =item.source
243	from sans.guiframe import dataFitting
244	data= dataFitting.Data1D(x=item.x, y=item.y, dy=dy, dxl=dxl, dxw=dxw)
245	data.name=item.name
246	data.detector=detector
247	data.source= source
248	return data
249
250	def set_fit_range(self, page, qmin, qmax):
251	"""
252	Set the fitting range of a given page
253	"""
254	if page in self.page_finder.iterkeys():
255	fitproblem= self.page_finder[page]
256	fitproblem.set_range(qmin= qmin, qmax= qmax)
257
258	def schedule_for_fit(self,value=0,page=None,fitproblem =None):
259	"""
260	Set the fit problem field to 0 or 1 to schedule that problem to fit.
261	Schedule the specified fitproblem or get the fit problem related to
262	the current page and set value.
263	@param value : integer 0 or 1
264	@param fitproblem: fitproblem to schedule or not to fit
265	"""
266	if fitproblem !=None:
267	fitproblem.schedule_tofit(value)
268	else:
269	if page in self.page_finder.iterkeys():
270	fitproblem= self.page_finder[page]
271	fitproblem.schedule_tofit(value)
272
273
274
275	def get_page_finder(self):
276	""" @return self.page_finder used also by simfitpage.py"""
277	return self.page_finder
278
279
280	def set_page_finder(self,modelname,names,values):
281	"""
282	Used by simfitpage.py to reset a parameter given the string constrainst.
283	@param modelname: the name ot the model for with the parameter has to reset
284	@param value: can be a string in this case.
285	@param names: the paramter name
286	@note: expecting park used for fit.
287	"""
288	sim_page= self.sim_page
289	for page, value in self.page_finder.iteritems():
290	if page != sim_page:
291	list=value.get_model()
292	model = list[0]
293	if model.name== modelname:
294	value.set_model_param(names,values)
295	break
296
297
298
299	def split_string(self,item):
300	"""
301	receive a word containing dot and split it. used to split parameterset
302	name into model name and parameter name example:
303	paramaterset (item) = M1.A
304	@return model_name =M1 , parameter name =A
305	"""
306	if string.find(item,".")!=-1:
307	param_names= re.split("\.",item)
308	model_name=param_names[0]
309	param_name=param_names[1]
310	return model_name,param_name
311
312
313	def stop_fit(self):
314	"""
315	Stop the fit engine
316	"""
317	if self.calc_fit!= None and self.calc_thread.isrunning():
318	self.calc_thread.stop()
319	wx.PostEvent(self.parent, StatusEvent(status="Fitting \
320	is cancelled" , type="stop"))
321
322
323
324	def set_smearer(self,smearer, qmin=None, qmax=None):
325	"""
326	Get a smear object and store it to a fit problem
327	@param smearer: smear object to allow smearing data
328	"""
329	current_pg=self.fit_panel.get_current_page()
330	self.page_finder[current_pg].set_smearer(smearer)
331	## draw model 1D with smeared data
332	data = self.page_finder[current_pg].get_plotted_data()
333	model = self.page_finder[current_pg].get_model()
334	## if user has already selected a model to plot
335	## redraw the model with data smeared
336
337	smearer =self.page_finder[current_pg].get_smearer()
338	if smearer != None:
339	self.draw_model( model=model, data= data, smearer= smearer,
340	qmin= qmin, qmax= qmax)
341
342
343
344	def draw_model(self, model, data= None,smearer= None,
345	enable1D= True, enable2D= False,
346	qmin= DEFAULT_QMIN, qmax= DEFAULT_QMAX, qstep= DEFAULT_NPTS):
347	"""
348	Draw model.
349	@param model: the model to draw
350	@param name: the name of the model to draw
351	@param data: the data on which the model is based to be drawn
352	@param description: model's description
353	@param enable1D: if true enable drawing model 1D
354	@param enable2D: if true enable drawing model 2D
355	@param qmin: Range's minimum value to draw model
356	@param qmax: Range's maximum value to draw model
357	@param qstep: number of step to divide the x and y-axis
358
359	"""
360	## draw model 1D with no loaded data
361	self._draw_model1D( model= model, data= data,enable1D=enable1D, smearer= smearer,
362	qmin= qmin, qmax= qmax, qstep= qstep )
363	## draw model 2D with no initial data
364	self._draw_model2D(model=model,
365	data = data,
366	enable2D= enable2D,
367	qmin=qmin,
368	qmax=qmax,
369	qstep=qstep)
370
371
372
373	def onFit(self):
374	"""
375	perform fit
376	"""
377	## count the number of fitproblem schedule to fit
378	fitproblem_count= 0
379	for value in self.page_finder.itervalues():
380	if value.get_scheduled()==1:
381	fitproblem_count += 1
382
383	## if simultaneous fit change automatically the engine to park
384	if fitproblem_count >1:
385	self._on_change_engine(engine='park')
386	from sans.fit.Fitting import Fit
387	self.fitter= Fit(self._fit_engine)
388
389	if self._fit_engine=="park":
390	engineType="Simutaneous Fit"
391	else:
392	engineType="Single Fit"
393
394	fproblemId = 0
395	current_pg=None
396	for page, value in self.page_finder.iteritems():
397	try:
398	if value.get_scheduled()==1:
399	#Get list of parameters name to fit
400	pars = []
401	templist = []
402	templist = page.get_param_list()
403	for element in templist:
404	name = str(element[0].GetLabelText())
405	pars.append(name)
406	#Set Engine (model , data) related to the page on
407	self._fit_helper( current_pg=page, value=value,pars=pars,
408	id=fproblemId, title= engineType )
409	fproblemId += 1
410	current_pg= page
411	except:
412	msg= "%s error: %s" % (engineType,sys.exc_value)
413	wx.PostEvent(self.parent, StatusEvent(status= msg ))
414	return
415	#Do the simultaneous fit
416	try:
417	## If a thread is already started, stop it
418	if self.calc_fit!= None and self.calc_fit.isrunning():
419	self.calc_fit.stop()
420	## perform single fit
421	if self._fit_engine=="scipy":
422	qmin, qmax= current_pg.get_range()
423	self.calc_fit=FitThread(parent =self.parent,
424	fn= self.fitter,
425	cpage=current_pg,
426	pars= pars,
427	completefn= self._single_fit_completed,
428	updatefn=None)
429
430	else:
431	## Perform more than 1 fit at the time
432	self.calc_fit=FitThread(parent =self.parent,
433	fn= self.fitter,
434	completefn= self._simul_fit_completed,
435	updatefn=None)
436	self.calc_fit.queue()
437	self.calc_fit.ready(2.5)
438
439	except:
440	msg= "%s error: %s" % (engineType,sys.exc_value)
441	wx.PostEvent(self.parent, StatusEvent(status= msg ))
442	return
443
444
445	def _add_page_onmenu(self, name, page_info):
446	"""
447	Add name of a closed page of fitpanel in a menu
448	"""
449	# Post paramters
450	event_id = wx.NewId()
451	self.menu1.Append(event_id, name,
452	"Show %s fit panel" % name)
453	self.closed_page_dict[event_id ]= page_info
454	wx.EVT_MENU(self.parent,event_id, self._open_closed_page)
455
456
457	def _open_closed_page(self, event):
458	"""
459	reopen a closed page
460	"""
461	print "reopen"
462
463	def _reset_schedule_problem(self, value=0):
464	"""
465	unschedule or schedule all fitproblem to be fit
466	"""
467	for page, fitproblem in self.page_finder.iteritems():
468	fitproblem.schedule_tofit(value)
469
470	def _fit_helper(self,current_pg,pars,value, id, title="Single Fit " ):
471	"""
472	helper for fitting
473	"""
474	metadata = value.get_fit_data()
475	model = value.get_model()
476	smearer = value.get_smearer()
477	qmin , qmax = value.get_range()
478	self.fit_id =id
479	#Create list of parameters for fitting used
480	templist=[]
481	pars=pars
482	try:
483	## create a park model and reset parameter value if constraint
484	## is given
485	new_model = Model(model)
486	param = value.get_model_param()
487	if len(param)>0:
488	for item in param:
489	param_value = item[1]
490	param_name = item[0]
491	## check if constraint
492	if param_value !=None and param_name != None:
493	new_model.parameterset[ param_name].set( param_value )
494
495
496	#Do the single fit
497	self.fitter.set_model(new_model, self.fit_id, pars)
498	dy=[]
499	x=[]
500	y=[]
501	## checking the validity of error
502	if metadata.__class__ in ["Data1D","Theory1D"]:
503	for i in range(len(metadata.dy)):
504	if metadata.dy[i] !=0:
505	dy.append(metadata.dy[i])
506	x.append(metadata.x[i])
507	y.append(metadata.y[i])
508	if len(dy)>0:
509	metadata.dy=numpy.zeros(len(dy))
510	metadata.dy=dy
511	metadata.y=numpy.zeros(len(y))
512	metadata.y=y
513	metadata.x=numpy.zeros(len(x))
514	metadata.x=x
515
516	self.fitter.set_data(data=metadata,Uid=self.fit_id,
517	smearer=smearer,qmin= qmin,qmax=qmax )
518
519	self.fitter.select_problem_for_fit(Uid= self.fit_id,
520	value= value.get_scheduled())
521
522	except:
523	msg= title +" error: %s" % sys.exc_value
524	wx.PostEvent(self.parent, StatusEvent(status= msg ))
525	return
526
527	def _onSelect(self,event):
528	"""
529	when Select data to fit a new page is created .Its reference is
530	added to self.page_finder
531	"""
532	self.panel = event.GetEventObject()
533	for item in self.panel.graph.plottables:
534	if item.name == self.panel.graph.selected_plottable:
535	## put the errors values back to the model if the errors were hiden
536	## before sending them to the fit engine
537	if len(self.err_dy)>0:
538	if item.name in self.err_dy.iterkeys():
539	dy= self.err_dy[item.name]
540	data= self.copy_data(item, dy)
541	else:
542	data= item
543	else:
544	if item.dy==None:
545	dy= numpy.zeros(len(item.y))
546	dy[dy==0]=1
547	data= self.copy_data(item, dy)
548	else:
549	data= item
550	else:
551	data= item
552	## create anew page
553	if item.name == self.panel.graph.selected_plottable or\
554	item.__class__.__name__ is "Data2D":
555	try:
556	page = self.fit_panel.add_fit_page(data)
557	# add data associated to the page created
558	if page !=None:
559	#create a fitproblem storing all link to data,model,page creation
560	self.page_finder[page]= FitProblem()
561	## item is almost the same as data but contains
562	## axis info for plotting
563	self.page_finder[page].add_plotted_data(item)
564	self.page_finder[page].add_fit_data(data)
565
566	wx.PostEvent(self.parent, StatusEvent(status="Page Created"))
567	else:
568	wx.PostEvent(self.parent, StatusEvent(status="Page was already Created"))
569	except:
570	wx.PostEvent(self.parent, StatusEvent(status="Creating Fit page: %s"\
571	%sys.exc_value))
572	return
573
574	def _single_fit_completed(self,result,pars,cpage, elapsed=None):
575	"""
576	Display fit result on one page of the notebook.
577	@param result: result of fit
578	@param pars: list of names of parameters fitted
579	@param current_pg: the page where information will be displayed
580	@param qmin: the minimum value of x to replot the model
581	@param qmax: the maximum value of x to replot model
582
583	"""
584	#wx.PostEvent(self.parent, StatusEvent(status="Single fit \
585	#complete! " , type="stop"))
586	try:
587	for page, value in self.page_finder.iteritems():
588	if page==cpage :
589	model= value.get_model()
590	break
591	i = 0
592	for name in pars:
593	if result.pvec.__class__==numpy.float64:
594	model.setParam(name,result.pvec)
595	else:
596	model.setParam(name,result.pvec[i])
597	i += 1
598	## Reset values of the current page to fit result
599	cpage.onsetValues(result.fitness, result.pvec,result.stderr)
600	## plot the current model with new param
601	metadata = self.page_finder[cpage].get_fit_data()
602	model = self.page_finder[cpage].get_model()
603	qmin, qmax= self.page_finder[cpage].get_range()
604	#Replot models
605	msg= "Single Fit completed. plotting... %s:"%model.name
606	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
607	self.draw_model( model=model, data= metadata,qmin= qmin, qmax= qmax)
608
609	except:
610	msg= "Single Fit completed but Following error occurred:"
611	wx.PostEvent(self.parent, StatusEvent(status="%s %s" % (msg, sys.exc_value)))
612	return
613
614
615	def _simul_fit_completed(self,result,pars=None,cpage=None, elapsed=None):
616	"""
617	Parameter estimation completed,
618	display the results to the user
619	@param alpha: estimated best alpha
620	@param elapsed: computation time
621	"""
622	wx.PostEvent(self.parent, StatusEvent(status="Simultaneous fit \
623	complete ", type="stop"))
624
625	## fit more than 1 model at the same time
626	try:
627	for page, value in self.page_finder.iteritems():
628	if value.get_scheduled()==1:
629	model = value.get_model()
630	metadata = value.get_plotted_data()
631	small_out = []
632	small_cov = []
633	i = 0
634	#Separate result in to data corresponding to each page
635	for p in result.parameters:
636	model_name,param_name = self.split_string(p.name)
637	if model.name == model_name:
638	p_name= model.name+"."+param_name
639	if p.name == p_name:
640	small_out.append(p.value )
641	model.setParam(param_name,p.value)
642	if p.stderr==None:
643	p.stderr=numpy.nan
644	small_cov.append(p.stderr)
645
646	else:
647	small_cov.append(p.stderr)
648	else:
649	value= model.getParam(param_name)
650	small_out.append(value )
651	small_cov.append(numpy.nan)
652	# Display result on each page
653	page.onsetValues(result.fitness, small_out,small_cov)
654	#Replot models
655	msg= "Simultaneous Fit completed. plotting... %s:"%model.name
656	wx.PostEvent(self.parent, StatusEvent(status="%s " % msg))
657	qmin, qmax= page.get_range()
658	self.draw_model( model=model, data= metadata,qmin= qmin, qmax= qmax)
659
660	except:
661	msg= "Simultaneous Fit completed but Following error occurred: "
662	wx.PostEvent(self.parent, StatusEvent(status="%s%s" %(msg,sys.exc_value)))
663	return
664
665
666
667	def _on_show_panel(self, event):
668	print "_on_show_panel: fitting"
669
670
671	def _onset_engine_park(self,event):
672	"""
673	set engine to park
674	"""
675	if event.IsChecked():
676	self.menu1.FindItemByPosition(0).Check(False)
677	self._on_change_engine('park')
678
679
680	def _onset_engine_scipy(self,event):
681	"""
682	set engine to scipy
683	"""
684	if event.IsChecked():
685	self.menu1.FindItemByPosition(1).Check(False)
686	self._on_change_engine('scipy')
687
688	def _on_slicer_event(self, event):
689	"""
690	Receive a panel as event and send it to guiframe
691	@param event: event containing a panel
692	"""
693	if event.panel!=None:
694	new_panel = event.panel
695	# Set group ID if available
696	event_id = self.parent.popup_panel(new_panel)
697	self.menu3.Append(event_id, new_panel.window_caption,
698	"Show %s plot panel" % new_panel.window_caption)
699	# Set UID to allow us to reference the panel later
700	new_panel.uid = event_id
701	new_panel
702	self.mypanels.append(new_panel)
703	return
704
705	def _on_change_engine(self, engine='park'):
706	"""
707	Allow to select the type of engine to perform fit
708	@param engine: the key work of the engine
709	"""
710	self._fit_engine = engine
711	wx.PostEvent(self.parent, StatusEvent(status="Engine set to: %s" % self._fit_engine))
712
713
714	def _on_model_panel(self, evt):
715	"""
716	react to model selection on any combo box or model menu.plot the model
717	@param evt: wx.combobox event
718	"""
719	model = evt.model
720	if model ==None:
721	return
722
723	sim_page=self.sim_page
724	current_pg = self.fit_panel.get_current_page()
725	## make sure nothing is done on self.sim_page
726	## example trying to call set_panel on self.sim_page
727	if current_pg != sim_page:
728
729	if self.page_finder[current_pg].get_model()== None :
730
731	model.name="M"+str(self.index_model)
732	self.index_model += 1
733	else:
734
735	model.name= self.page_finder[current_pg].get_model().name
736
737
738	metadata = self.page_finder[current_pg].get_plotted_data()
739
740	# save the name containing the data name with the appropriate model
741	self.page_finder[current_pg].set_model(model)
742	# save model name
743	self.draw_model( model=model, data= metadata)
744
745	if self.sim_page!=None:
746	self.sim_page.draw_page()
747
748
749
750	def _on_model_menu(self, evt):
751	"""
752	Plot a theory from a model selected from the menu
753	@param evt: wx.menu event
754	"""
755	name = evt.model.__class__.__name__
756	if hasattr(evt.model, "name"):
757	name = evt.model.name
758	model=evt.model
759	description=model.description
760
761	# Create a model page. If a new page is created, the model
762	# will be plotted automatically. If a page already exists,
763	# the content will be updated and the plot refreshed
764	self.fit_panel.add_model_page(model,description,name,topmenu=True)
765
766
767
768
769	def _update1D(self,x, output):
770	"""
771	Update the output of plotting model 1D
772	"""
773	self.calc_thread.ready(1)
774
775	def _fill_default_model2D(self, theory, qmax,qstep, qmin=None):
776	"""
777	fill Data2D with default value
778	@param theory: Data2D to fill
779	"""
780	from DataLoader.data_info import Detector, Source
781
782	detector = Detector()
783	theory.detector.append(detector)
784
785	theory.detector[0].distance=1e+32
786	theory.source= Source()
787	theory.source.wavelength=2*math.pi/1e+32
788
789	## Create detector for Model 2D
790	xmax=2theory.detector[0].distancemath.atan(\
791	qmax/(4*math.pi/theory.source.wavelength))
792
793	theory.detector[0].pixel_size.x= xmax/(qstep/2-0.5)
794	theory.detector[0].pixel_size.y= xmax/(qstep/2-0.5)
795	theory.detector[0].beam_center.x= qmax
796	theory.detector[0].beam_center.y= qmax
797	## create x_bins and y_bins of the model 2D
798	distance = theory.detector[0].distance
799	pixel = qstep/2-1
800	theta = pixel / distance / qstep#100.0
801	wavelength = theory.source.wavelength
802	pixel_width_x = theory.detector[0].pixel_size.x
803	pixel_width_y = theory.detector[0].pixel_size.y
804	center_x = theory.detector[0].beam_center.x/pixel_width_x
805	center_y = theory.detector[0].beam_center.y/pixel_width_y
806
807
808	size_x, size_y= numpy.shape(theory.data)
809	for i_x in range(size_x):
810	theta = (i_x-center_x)*pixel_width_x / distance
811	qx = 4.0math.pi/wavelength math.tan(theta/2.0)
812	theory.x_bins.append(qx)
813	for i_y in range(size_y):
814	theta = (i_y-center_y)*pixel_width_y / distance
815	qy =4.0math.pi/wavelength math.tan(theta/2.0)
816	theory.y_bins.append(qy)
817
818	theory.group_id ="Model"
819	theory.id ="Model"
820	## determine plot boundaries
821	theory.xmin= -qmax
822	theory.xmax= qmax
823	theory.ymin= -qmax
824	theory.ymax= qmax
825
826
827	def _get_plotting_info(self, data=None):
828	"""
829	get plotting info from data if data !=None
830	else use some default
831	"""
832	my_info = PlotInfo()
833	if data !=None:
834	if hasattr(data,"info"):
835	x_name, x_units = data.get_xaxis()
836	y_name, y_units = data.get_yaxis()
837
838	my_info._xunit = x_units
839	my_info._xaxis = x_name
840	my_info._yunit = y_units
841	my_info._yaxis = y_name
842
843	my_info.title= data.name
844	if hasattr(data, "info"):
845	my_info.info= data.info
846	if hasattr(data, "group_id"):
847	my_info.group_id= data.group_id
848
849	return my_info
850
851	def _complete1D(self, x,y, elapsed,model,data=None):
852	"""
853	Complete plotting 1D data
854	"""
855	try:
856	new_plot = Theory1D(x=x, y=y)
857	my_info = self._get_plotting_info( data)
858	new_plot.name = model.name
859	new_plot.id = my_info.id
860	new_plot.group_id = my_info.group_id
861
862	new_plot.xaxis( my_info._xaxis, my_info._xunit)
863	new_plot.yaxis( my_info._yaxis, my_info._yunit)
864
865	# Pass the reset flag to let the plotting event handler
866	# know that we are replacing the whole plot
867	title= my_info.title
868	if title== None:
869	title="Analytical model 1D "
870	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
871	title= str(title), reset=True ))
872	else:
873	wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot,
874	title= str(title)))
875
876	except:
877	msg= " Error occurred when drawing %s Model 1D: "%new_plot.name
878	msg+= " %s"%sys.exc_value
879	wx.PostEvent( self.parent, StatusEvent(status= msg ))
880	return
881
882
883
884
885	def _update2D(self, output,time=None):
886	"""
887	Update the output of plotting model
888	"""
889	wx.PostEvent(self.parent, StatusEvent(status="Plot \
890	#updating ... ",type="update"))
891	self.calc_thread.ready(0.01)
892
893
894	def _complete2D(self, image,data, model, elapsed,qmin, qmax,qstep=DEFAULT_NPTS):
895	"""
896	Complete get the result of modelthread and create model 2D
897	that can be plot.
898	"""
899	msg = "Calc complete !"
900	wx.PostEvent( self.parent, StatusEvent( status= msg , type="stop" ))
901
902	err_image = numpy.zeros(numpy.shape(image))
903	err_image[err_image==0]= 1
904	theory= Data2D(image= image , err_image= err_image)
905	theory.name= model.name
906
907	if data ==None:
908	self._fill_default_model2D(theory= theory, qmax=qmax,qstep=qstep, qmin= qmin)
909
910	else:
911	theory.id= "Model"
912	theory.group_id= "Model"+data.name
913	theory.x_bins= data.x_bins
914	theory.y_bins= data.y_bins
915	theory.detector= data.detector
916	theory.source= data.source
917
918	## plot boundaries
919	theory.ymin= data.ymin
920	theory.ymax= data.ymax
921	theory.xmin= data.xmin
922	theory.xmax= data.xmax
923
924	## plot
925	wx.PostEvent(self.parent, NewPlotEvent(plot=theory,
926	title="Analytical model 2D ", reset=True ))
927
928	def _on_data_error(self, event):
929	"""
930	receives and event from plotting plu-gins to store the data name and
931	their errors of y coordinates for 1Data hide and show error
932	"""
933	self.err_dy= event.err_dy
934
935	def _draw_model2D(self,model,data=None,description=None, enable2D=False,
936	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep=DEFAULT_NPTS):
937	"""
938	draw model in 2D
939	@param model: instance of the model to draw
940	@param description: the description of the model
941	@param enable2D: when True allows to draw model 2D
942	@param qmin: the minimum value to draw model 2D
943	@param qmax: the maximum value to draw model 2D
944	@param qstep: the number of division of Qx and Qy of the model to draw
945
946	"""
947
948	x= numpy.linspace(start= -1*qmax,
949	stop= qmax,
950	num= qstep,
951	endpoint=True )
952	y = numpy.linspace(start= -1*qmax,
953	stop= qmax,
954	num= qstep,
955	endpoint=True )
956	## use data info instead
957	if data !=None:
958	## check if data2D to plot
959	if hasattr(data, "x_bins"):
960	enable2D = True
961	x= data.x_bins
962	y= data.y_bins
963
964	if not enable2D:
965	return
966	try:
967	from model_thread import Calc2D
968	## If a thread is already started, stop it
969	if self.calc_2D != None and self.calc_2D.isrunning():
970	self.calc_2D.stop()
971	self.calc_2D = Calc2D( x= x,
972	y= y,
973	model= model,
974	data = data,
975	qmin= qmin,
976	qmax= qmax,
977	qstep= qstep,
978	completefn= self._complete2D,
979	updatefn= self._update2D )
980	self.calc_2D.queue()
981
982	except:
983	msg= " Error occurred when drawing %s Model 2D: "%model.name
984	msg+= " %s"%sys.exc_value
985	wx.PostEvent( self.parent, StatusEvent(status= msg ))
986	return
987
988	def _draw_model1D(self, model, data=None, smearer= None,
989	qmin=DEFAULT_QMIN, qmax=DEFAULT_QMAX, qstep= DEFAULT_NPTS,enable1D= True):
990	"""
991	Draw model 1D from loaded data1D
992	@param data: loaded data
993	@param model: the model to plot
994	"""
995
996	x= numpy.linspace(start= qmin,
997	stop= qmax,
998	num= qstep,
999	endpoint=True
1000	)
1001	if data!=None:
1002	## check for data2D
1003	if hasattr(data,"x_bins"):
1004	return
1005	x = data.x
1006	if qmin == DEFAULT_QMIN :
1007	qmin = min(data.x)
1008	if qmax == DEFAULT_QMAX:
1009	qmax = max(data.x)
1010
1011	if not enable1D:
1012	return
1013
1014	try:
1015	from model_thread import Calc1D
1016	## If a thread is already started, stop it
1017	if self.calc_1D!= None and self.calc_1D.isrunning():
1018	self.calc_1D.stop()
1019	self.calc_1D= Calc1D( x= x,
1020	data = data,
1021	model= model,
1022	qmin = qmin,
1023	qmax = qmax,
1024	smearer = smearer,
1025	completefn = self._complete1D,
1026	updatefn = self._update1D )
1027	self.calc_1D.queue()
1028
1029	except:
1030	msg= " Error occurred when drawing %s Model 1D: "%model.name
1031	msg+= " %s"%sys.exc_value
1032	wx.PostEvent( self.parent, StatusEvent(status= msg ))
1033	return
1034
1035
1036
1037
1038
1039	if __name__ == "__main__":
1040	i = Plugin()
1041
1042
1043
1044

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

SasView

source: sasview/sansview/perspectives/fitting/fitting.py @ 6f023e8

Download in other formats: