pagestate.py @ a0da535

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 a0da535 was fb59ed9, checked in by Jae Cho <jhjcho@…>, 14 years ago
added new models
Property mode set to `100644`
File size: 54.7 KB

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2
3	################################################################################
4	#This software was developed by the University of Tennessee as part of the
5	#Distributed Data Analysis of Neutron Scattering Experiments (DANSE)
6	#project funded by the US National Science Foundation.
7	#
8	#See the license text in license.txt
9	#
10	#copyright 2009, University of Tennessee
11	################################################################################
12
13	import time
14	import os
15	import sys
16	import copy
17	import logging
18	import numpy
19
20	import xml.dom.minidom
21	from xml.dom.minidom import parse
22	from lxml import etree
23
24	import DataLoader
25	from DataLoader.readers.cansas_reader import Reader as CansasReader
26	from DataLoader.readers.cansas_reader import get_content, write_node
27	from DataLoader.data_info import Data2D, Detector
28
29	#Information to read/write state as xml
30	FITTING_NODE_NAME = 'fitting_plug_in'
31	CANSAS_NS = "cansas1d/1.0"
32
33	list_of_data_attributes = [["is_data", "is_data", "bool"],
34	["group_id", "data_group_id", "string"],
35	["data_name", "data_name", "string"],
36	["data_id", "data_id", "string"],
37	["name", "name", "string"],
38	["data_name", "data_name", "string"]]
39	list_of_state_attributes = [["engine_type", "engine_type", "string"],
40	["qmin", "qmin", "float"],
41	["qmax", "qmax", "float"],
42	["npts", "npts", "float"],
43	["shape_rbutton", "shape_rbutton", "bool"],
44	["shape_indep_rbutton", "shape_indep_rbutton", "bool"],
45	["plugin_rbutton", "plugin_rbutton","bool"],
46	["struct_rbutton", "struct_rbutton", "bool"],
47	["formfactorcombobox", "formfactorcombobox", "float"],
48	["structurecombobox", "structurecombobox", "float"],
49	["disp_box", "disp_box", "float"],
50	["enable_smearer","enable_smearer","bool"],
51	["disable_smearer","disable_smearer","bool"],
52	["pinhole_smearer","pinhole_smearer","bool"],
53	["slit_smearer","slit_smearer","bool"],
54	["enable_disp","enable_disp","bool"],
55	["disable_disp","disable_disp","bool"],
56	["slit_smearer","slit_smearer","bool"],
57	["enable2D","enable2D","bool"],
58	["cb1","cb1","bool"],
59	["tcChi","tcChi","float"],
60	["smearer", "smearer", "float"],
61	["smear_type","smear_type", "string"],
62	["dq_l", "dq_l", "string"],
63	["dq_r","dq_r", "string"]]
64
65	list_of_model_attributes = [["values", "values"],
66	["weights", "weights"]]
67
68	list_of_state_parameters = [["parameters", "parameters"] ,
69	["str_parameters", "str_parameters"] ,
70	["orientation_parameters", "orientation_params"],
71	["dispersity_parameters", "orientation_params_disp"],
72	["fixed_param", "fixed_param"],
73	["fittable_param","fittable_param"]]
74	list_of_data_2d_attr = [["xmin", "xmin","float"],
75	["xmax","xmax","float"],
76	["ymin","ymin","float"],
77	["ymax","ymax","float"],
78	["_xaxis","_xaxis", "string"],
79	["_xunit", "_xunit", "string"],
80	["_yaxis","_yaxis","string"],
81	["_yunit","_yunit","string"],
82	["_zaxis","_zaxis","string"],
83	["_zunit","_zunit","string"]]
84	list_of_data2d_values = [["qx_data","qx_data","float"],
85	["qy_data","qy_data","float"],
86	["dqx_data","dqx_data","float"],
87	["dqy_data","dqy_data","float"],
88	["data","data","float"],
89	["q_data","q_data","float"],
90	["err_data","err_data","float"],
91	["mask","mask","bool"]]
92
93	def parse_entry_helper( node, item):
94	"""
95	Create a numpy list from value extrated from the node
96
97	:param node: node from each the value is stored
98	:param item: list name of three strings.the two first are name of data
99	attribute and the third one is the type of the value of that
100	attribute. type can be string, float, bool, etc.
101
102	: return: numpy array
103	"""
104	if node is not None:
105	if item[2] == "string":
106	return str(node.get(item[0]).strip())
107	elif item[2] == "bool":
108	try:
109	return node.get(item[0]).strip() == "True"
110
111	except:
112	return None
113	else:
114	try:
115	return float(node.get(item[0]))
116	except:
117	return None
118
119
120	class PageState(object):
121	"""
122	Contains information to reconstruct a page of the fitpanel.
123	"""
124	def __init__(self, parent=None, model=None, data=None):
125
126	"""
127	Initialize the current state
128
129	:param model: a selected model within a page
130	:param data:
131
132	"""
133	self.file = None
134	#Time of state creation
135	self.timestamp = time.time()
136	## Data member to store the dispersion object created
137	self._disp_obj_dict = {}
138	#------------------------
139	#Data used for fitting
140	self.data = data
141	#save additional information on data that dataloader.reader does not read
142	self.is_data = None
143	self.data_name = ""
144
145	if self.data is not None:
146	self.data_name = self.data.name
147	self.data_id = None
148	if self.data is not None and hasattr(self.data, "id"):
149	self.data_id = self.data.id
150	self.data_group_id = None
151	if self.data is not None and hasattr(self.data, "group_id"):
152	self.data_group_id = self.data.group_id
153
154	## reset True change the state of exsiting button
155	self.reset = False
156
157	#engine type
158	self.engine_type = None
159	# flag to allow data2D plot
160	self.enable2D = False
161	# model on which the fit would be performed
162	self.model = model
163
164	#fit page manager
165	self.manager = None
166	#Store the parent of this panel parent
167	# For this application fitpanel is the parent
168	self.parent = parent
169	# Event_owner is the owner of model event
170	self.event_owner = None
171	##page name
172	self.page_name = ""
173	# Contains link between model ,all its parameters, and panel organization
174	self.parameters = []
175	# String parameter list that can not be fitted
176	self.str_parameters = []
177	# Contains list of parameters that cannot be fitted and reference to
178	#panel objects
179	self.fixed_param = []
180	# Contains list of parameters with dispersity and reference to
181	#panel objects
182	self.fittable_param = []
183	## orientation parameters
184	self.orientation_params = []
185	## orientation parmaters for gaussian dispersity
186	self.orientation_params_disp = []
187	## smearer info
188	self.smearer = None
189	self.smear_type = None
190	self.dq_l = None
191	self.dq_r = None
192
193	#list of dispersion paramaters
194	self.disp_list =[]
195	if self.model is not None:
196	self.disp_list = self.model.getDispParamList()
197	self._disp_obj_dict = {}
198	self.disp_cb_dict = {}
199	self.values = []
200	self.weights = []
201
202	#contains link between a model and selected parameters to fit
203	self.param_toFit = []
204	##dictionary of model type and model class
205	self.model_list_box = None
206	## save the state of the context menu
207	self.saved_states = {}
208	## save selection of combobox
209	self.formfactorcombobox = None
210	self.structurecombobox = None
211	## radio box to select type of model
212	self.shape_rbutton = False
213	self.shape_indep_rbutton = False
214	self.struct_rbutton = False
215	self.plugin_rbutton = False
216	## the indice of the current selection
217	self.disp_box = 0
218	## Qrange
219	## Q range
220	self.qmin = 0.001
221	self.qmax = 0.1
222	#reset data range
223	self.qmax_x = None
224	self.qmin_x = None
225
226	self.npts = None
227	self.name = ""
228	self.multi_factor = None
229	## enable smearering state
230	self.enable_smearer = False
231	self.disable_smearer = True
232	self.pinhole_smearer = False
233	self.slit_smearer = False
234	## disperity selection
235	self.enable_disp = False
236	self.disable_disp = True
237
238	## state of selected all check button
239	self.cb1 = False
240	## store value of chisqr
241	self.tcChi = None
242
243	def clone(self):
244	"""
245	Create a new copy of the current object
246	"""
247	model = None
248	if self.model is not None:
249	model = self.model.clone()
250	model.name = self.model.name
251	obj = PageState(self.parent, model=model)
252	obj.file = copy.deepcopy(self.file)
253	obj.data = copy.deepcopy(self.data)
254	if self.data is not None:
255	self.data_name = self.data.name
256	obj.data_name = self.data_name
257	obj.is_data = self.is_data
258	obj.model_list_box = copy.deepcopy(self.model_list_box)
259	obj.engine_type = copy.deepcopy(self.engine_type)
260
261	obj.formfactorcombobox = self.formfactorcombobox
262	obj.structurecombobox = self.structurecombobox
263
264	obj.shape_rbutton = self.shape_rbutton
265	obj.shape_indep_rbutton = self.shape_indep_rbutton
266	obj.struct_rbutton = self.struct_rbutton
267	obj.plugin_rbutton = self.plugin_rbutton
268
269	obj.manager = self.manager
270	obj.event_owner = self.event_owner
271	obj.disp_list = copy.deepcopy(self.disp_list)
272
273	obj.enable2D = copy.deepcopy(self.enable2D)
274	obj.parameters = copy.deepcopy(self.parameters)
275	obj.str_parameters = copy.deepcopy(self.str_parameters)
276	obj.fixed_param = copy.deepcopy(self.fixed_param)
277	obj.fittable_param = copy.deepcopy(self.fittable_param)
278	obj.orientation_params = copy.deepcopy(self.orientation_params)
279	obj.orientation_params_disp = copy.deepcopy(self.orientation_params_disp)
280	obj.enable_disp = copy.deepcopy(self.enable_disp)
281	obj.disable_disp = copy.deepcopy(self.disable_disp)
282	obj.tcChi = self.tcChi
283
284	if len(self._disp_obj_dict)>0:
285	for k , v in self._disp_obj_dict.iteritems():
286	obj._disp_obj_dict[k]= v
287	if len(self.disp_cb_dict)>0:
288	for k , v in self.disp_cb_dict.iteritems():
289	obj.disp_cb_dict[k]= v
290
291	obj.values = copy.deepcopy(self.values)
292	obj.weights = copy.deepcopy(self.weights)
293	obj.enable_smearer = copy.deepcopy(self.enable_smearer)
294	obj.disable_smearer = copy.deepcopy(self.disable_smearer)
295	obj.pinhole_smearer = copy.deepcopy(self.pinhole_smearer)
296	obj.slit_smearer = copy.deepcopy(self.slit_smearer)
297	obj.smear_type = copy.deepcopy(self.smear_type)
298	obj.dq_l = copy.deepcopy(self.dq_l)
299	obj.dq_r = copy.deepcopy(self.dq_r)
300
301	obj.disp_box = copy.deepcopy(self.disp_box)
302	obj.qmin = copy.deepcopy(self.qmin)
303	obj.qmax = copy.deepcopy(self.qmax)
304	obj.multi_factor = copy.deepcopy(self.multi_factor)
305	obj.npts = copy.deepcopy(self.npts )
306	obj.cb1 = copy.deepcopy(self.cb1)
307	obj.smearer = copy.deepcopy(self.smearer)
308
309	for name, state in self.saved_states.iteritems():
310	copy_name = copy.deepcopy(name)
311	copy_state = state.clone()
312	obj.saved_states[copy_name]= copy_state
313	return obj
314
315	def _repr_helper(self, list, rep):
316	"""
317	Helper method to print a state
318	"""
319	for item in list:
320	rep += "parameter name: %s \n"%str(item[1])
321	rep += "value: %s\n"%str(item[2])
322	rep += "selected: %s\n"%str(item[0])
323	rep += "error displayed : %s \n"%str(item[4][0])
324	rep += "error value:%s \n"%str(item[4][1])
325	rep += "minimum displayed : %s \n"%str(item[5][0])
326	rep += "minimum value : %s \n"%str(item[5][1])
327	rep += "maximum displayed : %s \n"%str(item[6][0])
328	rep += "maximum value : %s \n"%str(item[6][1])
329	rep += "parameter unit: %s\n\n"%str(item[7])
330	return rep
331
332	def __repr__(self):
333	"""
334	output string for printing
335	"""
336	rep = "\nState name: %s\n"%self.file
337	t = time.localtime(self.timestamp)
338	time_str = time.strftime("%b %d %H:%M", t)
339	rep += "State created on : %s\n"%time_str
340	rep += "State form factor combobox selection: %s\n"%self.formfactorcombobox
341	rep += "State structure factor combobox selection: %s\n"%self.structurecombobox
342	rep += "is data : %s\n"%self.is_data
343	rep += "data's name : %s\n"%self.data_name
344	rep += "data's id : %s\n"%self.data_id
345	rep += "model type (form factor) selected: %s\n"%self.shape_rbutton
346	rep += "model type (shape independent) selected: %s\n"%self.shape_indep_rbutton
347	rep += "model type (structure factor) selected: %s\n"%self.struct_rbutton
348	rep += "model type (plug-in ) selected: %s\n"%self.plugin_rbutton
349	rep += "data : %s\n"% str(self.data)
350	rep += "Plotting Range: min: %s, max: %s, steps: %s\n"%(str(self.qmin),
351	str(self.qmax),str(self.npts))
352	rep += "Dispersion selection : %s\n"%str(self.disp_box)
353	rep += "Smearing enable : %s\n"%str(self.enable_smearer)
354	rep += "Smearing disable : %s\n"%str(self.disable_smearer)
355	rep += "Pinhole smearer enable : %s\n"%str(self.pinhole_smearer)
356	rep += "Slit smearer enable : %s\n"%str(self.slit_smearer)
357	rep += "Dispersity enable : %s\n"%str(self.enable_disp)
358	rep += "Dispersity disable : %s\n"%str(self.disable_disp)
359	rep += "Slit smearer enable: %s\n"%str(self.slit_smearer)
360	rep += "2D enable : %s\n"%str(self.enable2D)
361	rep += "All parameters checkbox selected: %s\n"%(self.cb1)
362	rep += "Value of Chisqr : %s\n"%str(self.tcChi)
363	rep += "Smear object : %s\n"%str(self.smearer)
364	rep += "Smear type : %s\n"%(self.smear_type)
365	rep += "dq_l : %s\n"%self.dq_l
366	rep += "dq_r : %s\n"%self.dq_r
367
368	rep += "model : %s\n\n"% str(self.model)
369	rep += "number parameters(self.parameters): %s\n"%len(self.parameters)
370	rep = self._repr_helper( list=self.parameters, rep=rep)
371	rep += "number str_parameters(self.str_parameters): %s\n"%len(self.str_parameters)
372	rep = self._repr_helper( list=self.str_parameters, rep=rep)
373	rep += "number orientation parameters"
374	rep += "(self.orientation_params): %s\n"%len(self.orientation_params)
375	rep = self._repr_helper( list=self.orientation_params, rep=rep)
376	rep += "number dispersity parameters"
377	rep += "(self.orientation_params_disp): %s\n"%len(self.orientation_params_disp)
378	rep = self._repr_helper( list=self.orientation_params_disp, rep=rep)
379
380	return rep
381
382	def _toXML_helper(self, list, element, newdoc):
383	"""
384	Helper method to create xml file for saving state
385	"""
386	for item in list:
387	sub_element = newdoc.createElement('parameter')
388	sub_element.setAttribute('name', str(item[1]))
389	sub_element.setAttribute('value', str(item[2]))
390	sub_element.setAttribute('selected_to_fit', str(item[0]))
391	sub_element.setAttribute('error_displayed', str(item[4][0]))
392	sub_element.setAttribute('error_value', str(item[4][1]))
393	sub_element.setAttribute('minimum_displayed', str(item[5][0]))
394	sub_element.setAttribute('minimum_value', str(item[5][1]))
395	sub_element.setAttribute('maximum_displayed', str(item[6][0]))
396	sub_element.setAttribute('maximum_value', str(item[6][1]))
397	sub_element.setAttribute('unit', str(item[7]))
398	element.appendChild(sub_element)
399
400	def toXML(self, file="fitting_state.fitv", doc=None, entry_node=None):
401	"""
402	Writes the state of the InversionControl panel to file, as XML.
403
404	Compatible with standalone writing, or appending to an
405	already existing XML document. In that case, the XML document
406	is required. An optional entry node in the XML document may also be given.
407
408	:param file: file to write to
409	:param doc: XML document object [optional]
410	:param entry_node: XML node within the XML document at which we will append the data [optional]
411
412	"""
413	from xml.dom.minidom import getDOMImplementation
414
415	# Check whether we have to write a standalone XML file
416	if doc is None:
417	impl = getDOMImplementation()
418	doc_type = impl.createDocumentType(FITTING_NODE_NAME, "1.0", "1.0")
419	newdoc = impl.createDocument(None, FITTING_NODE_NAME, doc_type)
420	top_element = newdoc.documentElement
421	else:
422	# We are appending to an existing document
423	newdoc = doc
424	top_element = newdoc.createElement(FITTING_NODE_NAME)
425	if entry_node is None:
426	newdoc.documentElement.appendChild(top_element)
427	else:
428	entry_node.appendChild(top_element)
429
430	attr = newdoc.createAttribute("version")
431	attr.nodeValue = '1.0'
432	top_element.setAttributeNode(attr)
433
434	# File name
435	element = newdoc.createElement("filename")
436	if self.file is not None:
437	element.appendChild(newdoc.createTextNode(str(self.file)))
438	else:
439	element.appendChild(newdoc.createTextNode(str(file)))
440	top_element.appendChild(element)
441
442	element = newdoc.createElement("timestamp")
443	element.appendChild(newdoc.createTextNode(time.ctime(self.timestamp)))
444	attr = newdoc.createAttribute("epoch")
445	attr.nodeValue = str(self.timestamp)
446	element.setAttributeNode(attr)
447	top_element.appendChild(element)
448	# Inputs
449	inputs = newdoc.createElement("Attributes")
450	top_element.appendChild(inputs)
451
452
453	if self.data is not None and hasattr(self.data, "group_id"):
454	self.data_group_id = self.data.group_id
455	if self.data is not None and hasattr(self.data, "is_data"):
456	self.is_data = self.data.is_data
457	if self.data is not None:
458	self.data_name = self.data.name
459	if self.data is not None and hasattr(self.data, "id"):
460	self.data_id = self.data.id
461
462	for item in list_of_data_attributes:
463	element = newdoc.createElement(item[0])
464	exec "element.setAttribute(item[0], str(self.%s))"%(item[1])
465	inputs.appendChild(element)
466
467	for item in list_of_state_attributes:
468	element = newdoc.createElement(item[0])
469	exec "element.setAttribute(item[0], str(self.%s))"%(item[1])
470	inputs.appendChild(element)
471
472	for item in list_of_model_attributes:
473	element = newdoc.createElement(item[0])
474	exec "list = self.%s"%item[1]
475	for value in list:
476	exec "element.appendChild(newdoc.createTextNode(str(%s)))"%value
477	inputs.appendChild(element)
478
479	for item in list_of_state_parameters:
480	element = newdoc.createElement(item[0])
481	exec "self._toXML_helper(list=self.%s, element=element, newdoc=newdoc)"%item[1]
482	inputs.appendChild(element)
483
484	# Save the file
485	if doc is None:
486	fd = open(file, 'w')
487	fd.write(newdoc.toprettyxml())
488	fd.close()
489	return None
490	else:
491	return newdoc.toprettyxml()
492
493	def _fromXML_helper(self, node, list):
494	"""
495	Helper function to write state to xml
496	"""
497	for item in node:
498	try:
499	name = item.get('name')
500	except:
501	name = None
502	try:
503	value = item.get('value')
504	except:
505	value = None
506	try:
507	selected_to_fit = (item.get('selected_to_fit') == "True")
508	except:
509	selected_to_fit = None
510	try:
511	error_displayed = (item.get('error_displayed') == "True")
512	except:
513	error_displayed = None
514	try:
515	error_value = item.get('error_value')
516	except:
517	error_value = None
518	try:
519	minimum_displayed = (item.get('minimum_displayed')== "True")
520	except:
521	minimum_displayed = None
522	try:
523	minimum_value = item.get('minimum_value')
524	except:
525	minimum_value = None
526	try:
527	maximum_displayed = (item.get('maximum_displayed') == "True")
528	except:
529	maximum_displayed = None
530	try:
531	maximum_value = item.get('maximum_value')
532	except:
533	maximum_value = None
534	try:
535	unit = item.get('unit')
536	except:
537	unit = None
538	list.append([selected_to_fit, name, value, "+/-",[error_displayed, error_value],
539	[minimum_displayed,minimum_value],[maximum_displayed,maximum_value], unit])
540
541	def fromXML(self, file=None, node=None):
542	"""
543	Load fitting state from a file
544
545	:param file: .fitv file
546	:param node: node of a XML document to read from
547
548	"""
549	if file is not None:
550	msg = "PageState no longer supports non-CanSAS"
551	msg += " format for fitting files"
552	raise RuntimeError, msg
553
554	if node.get('version')and node.get('version') == '1.0':
555
556	# Get file name
557	entry = get_content('ns:filename', node)
558	if entry is not None:
559	self.file = entry.text.strip()
560
561	# Get time stamp
562	entry = get_content('ns:timestamp', node)
563	if entry is not None and entry.get('epoch'):
564	try:
565	self.timestamp = float(entry.get('epoch'))
566	except:
567	msg = "PageState.fromXML: Could not"
568	msg += " read timestamp\n %s" % sys.exc_value
569	logging.error(msg)
570
571	# Parse fitting attributes
572	entry = get_content('ns:Attributes', node)
573	for item in list_of_data_attributes:
574	node = get_content('ns:%s'%item[0], entry)
575	try:
576	exec "self.%s = parse_entry_helper(node, item)"%item[0]
577
578	except:
579	raise
580
581	if entry is not None:
582
583	for item in list_of_state_attributes:
584	node = get_content('ns:%s'%item[0], entry)
585	try:
586	exec "self.%s = parse_entry_helper(node, item)"%str(item[0])
587	except:
588	raise
589
590	for item in list_of_model_attributes:
591	node = get_content("ns:%s"%item[0], entry)
592	list = []
593	for value in node:
594	try:
595	list.append(float(value))
596	except:
597	list.append(None)
598	exec "self.%s = list"%item[1]
599
600	for item in list_of_state_parameters:
601	node = get_content("ns:%s"%item[0], entry)
602	exec "self._fromXML_helper(node=node, list=self.%s)"%item[1]
603
604
605	class Reader(CansasReader):
606	"""
607	Class to load a .fitv fitting file
608	"""
609	## File type
610	type_name = "Fitting"
611
612	## Wildcards
613	type = ["Fitting files (.fitv)\|.fitv"
614	"SANSView file (.svs)\|.svs"]
615	## List of allowed extensions
616	ext=['.fitv', '.FITV', '.svs', 'SVS']
617
618	def __init__(self, call_back=None, cansas=True):
619	CansasReader.__init__(self)
620	"""
621	Initialize the call-back method to be called
622	after we load a file
623
624	:param call_back: call-back method
625	:param cansas: True = files will be written/read in CanSAS format
626	False = write CanSAS format
627
628	"""
629	## Call back method to be executed after a file is read
630	self.call_back = call_back
631	## CanSAS format flag
632	self.cansas = cansas
633
634	def read(self, path):
635	"""
636	Load a new P(r) inversion state from file
637
638	:param path: file path
639
640	"""
641	if self.cansas == True:
642	return self._read_cansas(path)
643
644	def _data2d_to_xml_doc(self, datainfo):
645	"""
646	Create an XML document to contain the content of a Data2D
647
648	:param datainfo: Data2D object
649
650	"""
651	if not issubclass(datainfo.__class__, Data2D):
652	raise RuntimeError, "The cansas writer expects a Data2D instance"
653
654	doc = xml.dom.minidom.Document()
655	main_node = doc.createElement("SASroot")
656	main_node.setAttribute("version", self.version)
657	main_node.setAttribute("xmlns", "cansas1d/%s" % self.version)
658	main_node.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance")
659	main_node.setAttribute("xsi:schemaLocation", "cansas1d/%s http://svn.smallangles.net/svn/canSAS/1dwg/trunk/cansas1d.xsd" % self.version)
660
661	doc.appendChild(main_node)
662
663	entry_node = doc.createElement("SASentry")
664	main_node.appendChild(entry_node)
665
666	write_node(doc, entry_node, "Title", datainfo.title)
667	if datainfo is not None:
668	write_node(doc, entry_node, "data_class", datainfo.__class__.__name__)
669	for item in datainfo.run:
670	runname = {}
671	if datainfo.run_name.has_key(item) and len(str(datainfo.run_name[item]))>1:
672	runname = {'name': datainfo.run_name[item] }
673	write_node(doc, entry_node, "Run", item, runname)
674	# Data info
675	new_node = doc.createElement("SASdata")
676	entry_node.appendChild(new_node)
677	for item in list_of_data_2d_attr:
678	element = doc.createElement(item[0])
679	exec "element.setAttribute(item[0], str(datainfo.%s))"%(item[1])
680	new_node.appendChild(element)
681
682	for item in list_of_data2d_values:
683	root_node = doc.createElement(item[0])
684	new_node.appendChild(root_node)
685
686	exec "temp_list = datainfo.%s"%item[1]
687
688	if temp_list is None or len(temp_list)== 0:
689	element = doc.createElement(item[0])
690	exec "element.appendChild(doc.createTextNode(str(%s)))"%temp_list
691	root_node.appendChild(element)
692	else:
693	for value in temp_list:
694	element = doc.createElement(item[0])
695	exec "element.setAttribute(item[0], str(%s))"%value
696	root_node.appendChild(element)
697
698	# Sample info
699	sample = doc.createElement("SASsample")
700	if datainfo.sample.name is not None:
701	sample.setAttribute("name", str(datainfo.sample.name))
702	entry_node.appendChild(sample)
703	write_node(doc, sample, "ID", str(datainfo.sample.ID))
704	write_node(doc, sample, "thickness", datainfo.sample.thickness, {"unit":datainfo.sample.thickness_unit})
705	write_node(doc, sample, "transmission", datainfo.sample.transmission)
706	write_node(doc, sample, "temperature", datainfo.sample.temperature, {"unit":datainfo.sample.temperature_unit})
707
708	for item in datainfo.sample.details:
709	write_node(doc, sample, "details", item)
710
711	pos = doc.createElement("position")
712	written = write_node(doc, pos, "x", datainfo.sample.position.x, {"unit":datainfo.sample.position_unit})
713	written = written \| write_node(doc, pos, "y", datainfo.sample.position.y, {"unit":datainfo.sample.position_unit})
714	written = written \| write_node(doc, pos, "z", datainfo.sample.position.z, {"unit":datainfo.sample.position_unit})
715	if written == True:
716	sample.appendChild(pos)
717
718	ori = doc.createElement("orientation")
719	written = write_node(doc, ori, "roll", datainfo.sample.orientation.x, {"unit":datainfo.sample.orientation_unit})
720	written = written \| write_node(doc, ori, "pitch", datainfo.sample.orientation.y, {"unit":datainfo.sample.orientation_unit})
721	written = written \| write_node(doc, ori, "yaw", datainfo.sample.orientation.z, {"unit":datainfo.sample.orientation_unit})
722	if written == True:
723	sample.appendChild(ori)
724
725	# Instrument info
726	instr = doc.createElement("SASinstrument")
727	entry_node.appendChild(instr)
728
729	write_node(doc, instr, "name", datainfo.instrument)
730
731	# Source
732	source = doc.createElement("SASsource")
733	if datainfo.source.name is not None:
734	source.setAttribute("name", str(datainfo.source.name))
735	instr.appendChild(source)
736
737	write_node(doc, source, "radiation", datainfo.source.radiation)
738	write_node(doc, source, "beam_shape", datainfo.source.beam_shape)
739	size = doc.createElement("beam_size")
740	if datainfo.source.beam_size_name is not None:
741	size.setAttribute("name", str(datainfo.source.beam_size_name))
742	written = write_node(doc, size, "x", datainfo.source.beam_size.x, {"unit":datainfo.source.beam_size_unit})
743	written = written \| write_node(doc, size, "y", datainfo.source.beam_size.y, {"unit":datainfo.source.beam_size_unit})
744	written = written \| write_node(doc, size, "z", datainfo.source.beam_size.z, {"unit":datainfo.source.beam_size_unit})
745	if written == True:
746	source.appendChild(size)
747
748	write_node(doc, source, "wavelength", datainfo.source.wavelength, {"unit":datainfo.source.wavelength_unit})
749	write_node(doc, source, "wavelength_min", datainfo.source.wavelength_min, {"unit":datainfo.source.wavelength_min_unit})
750	write_node(doc, source, "wavelength_max", datainfo.source.wavelength_max, {"unit":datainfo.source.wavelength_max_unit})
751	write_node(doc, source, "wavelength_spread", datainfo.source.wavelength_spread, {"unit":datainfo.source.wavelength_spread_unit})
752
753	# Collimation
754	for item in datainfo.collimation:
755	coll = doc.createElement("SAScollimation")
756	if item.name is not None:
757	coll.setAttribute("name", str(item.name))
758	instr.appendChild(coll)
759
760	write_node(doc, coll, "length", item.length, {"unit":item.length_unit})
761
762	for apert in item.aperture:
763	ap = doc.createElement("aperture")
764	if apert.name is not None:
765	ap.setAttribute("name", str(apert.name))
766	if apert.type is not None:
767	ap.setAttribute("type", str(apert.type))
768	coll.appendChild(ap)
769
770	write_node(doc, ap, "distance", apert.distance, {"unit":apert.distance_unit})
771
772	size = doc.createElement("size")
773	if apert.size_name is not None:
774	size.setAttribute("name", str(apert.size_name))
775	written = write_node(doc, size, "x", apert.size.x, {"unit":apert.size_unit})
776	written = written \| write_node(doc, size, "y", apert.size.y, {"unit":apert.size_unit})
777	written = written \| write_node(doc, size, "z", apert.size.z, {"unit":apert.size_unit})
778	if written == True:
779	ap.appendChild(size)
780
781	# Detectors
782	for item in datainfo.detector:
783	det = doc.createElement("SASdetector")
784	written = write_node(doc, det, "name", item.name)
785	written = written \| write_node(doc, det, "SDD", item.distance, {"unit":item.distance_unit})
786	written = written \| write_node(doc, det, "slit_length", item.slit_length, {"unit":item.slit_length_unit})
787	if written == True:
788	instr.appendChild(det)
789
790	off = doc.createElement("offset")
791	written = write_node(doc, off, "x", item.offset.x, {"unit":item.offset_unit})
792	written = written \| write_node(doc, off, "y", item.offset.y, {"unit":item.offset_unit})
793	written = written \| write_node(doc, off, "z", item.offset.z, {"unit":item.offset_unit})
794	if written == True:
795	det.appendChild(off)
796
797	center = doc.createElement("beam_center")
798	written = write_node(doc, center, "x", item.beam_center.x, {"unit":item.beam_center_unit})
799	written = written \| write_node(doc, center, "y", item.beam_center.y, {"unit":item.beam_center_unit})
800	written = written \| write_node(doc, center, "z", item.beam_center.z, {"unit":item.beam_center_unit})
801	if written == True:
802	det.appendChild(center)
803
804	pix = doc.createElement("pixel_size")
805	written = write_node(doc, pix, "x", item.pixel_size.x, {"unit":item.pixel_size_unit})
806	written = written \| write_node(doc, pix, "y", item.pixel_size.y, {"unit":item.pixel_size_unit})
807	written = written \| write_node(doc, pix, "z", item.pixel_size.z, {"unit":item.pixel_size_unit})
808	if written == True:
809	det.appendChild(pix)
810
811	ori = doc.createElement("orientation")
812	written = write_node(doc, ori, "roll", item.orientation.x, {"unit":item.orientation_unit})
813	written = written \| write_node(doc, ori, "pitch", item.orientation.y, {"unit":item.orientation_unit})
814	written = written \| write_node(doc, ori, "yaw", item.orientation.z, {"unit":item.orientation_unit})
815	if written == True:
816	det.appendChild(ori)
817
818	# Processes info
819	for item in datainfo.process:
820	node = doc.createElement("SASprocess")
821	entry_node.appendChild(node)
822
823	write_node(doc, node, "name", item.name)
824	write_node(doc, node, "date", item.date)
825	write_node(doc, node, "description", item.description)
826	for term in item.term:
827	value = term['value']
828	del term['value']
829	write_node(doc, node, "term", value, term)
830	for note in item.notes:
831	write_node(doc, node, "SASprocessnote", note)
832	# Return the document, and the SASentry node associated with
833	# the data we just wrote
834	return doc, entry_node
835
836	def _parse_state(self, entry):
837	"""
838	Read a fit result from an XML node
839
840	:param entry: XML node to read from
841
842	:return: PageState object
843	"""
844	# Create an empty state
845	state = None
846	# Locate the P(r) node
847	try:
848	nodes = entry.xpath('ns:%s' % FITTING_NODE_NAME, namespaces={'ns': CANSAS_NS})
849	if nodes !=[]:
850	# Create an empty state
851	state = PageState()
852	state.fromXML(node=nodes[0])
853	except:
854	logging.info("XML document does not contain fitting information.\n %s" % sys.exc_value)
855
856	return state
857
858
859
860	def _parse_entry(self, dom):
861	"""
862	Parse a SASentry
863
864	:param node: SASentry node
865
866	:return: Data1D/Data2D object
867
868	"""
869	node = dom.xpath('ns:data_class', namespaces={'ns': CANSAS_NS})
870	if not node or node[0].text.lstrip().rstrip() != "Data2D":
871	return CansasReader._parse_entry(self, dom)
872
873	#Parse 2D
874	data_info = Data2D()
875
876	# Look up title
877	self._store_content('ns:Title', dom, 'title', data_info)
878
879	# Look up run number
880	nodes = dom.xpath('ns:Run', namespaces={'ns': CANSAS_NS})
881	for item in nodes:
882	if item.text is not None:
883	value = item.text.strip()
884	if len(value) > 0:
885	data_info.run.append(value)
886	if item.get('name') is not None:
887	data_info.run_name[value] = item.get('name')
888
889	# Look up instrument name
890	self._store_content('ns:SASinstrument/ns:name', dom, 'instrument', data_info)
891
892	# Notes
893	note_list = dom.xpath('ns:SASnote', namespaces={'ns': CANSAS_NS})
894	for note in note_list:
895	try:
896	if note.text is not None:
897	note_value = note.text.strip()
898	if len(note_value) > 0:
899	data_info.notes.append(note_value)
900	except:
901	err_mess = "cansas_reader.read: error processing entry notes\n %s" % sys.exc_value
902	self.errors.append(err_mess)
903	logging.error(err_mess)
904
905	# Sample info ###################
906	entry = get_content('ns:SASsample', dom)
907	if entry is not None:
908	data_info.sample.name = entry.get('name')
909
910	self._store_content('ns:SASsample/ns:ID',
911	dom, 'ID', data_info.sample)
912	self._store_float('ns:SASsample/ns:thickness',
913	dom, 'thickness', data_info.sample)
914	self._store_float('ns:SASsample/ns:transmission',
915	dom, 'transmission', data_info.sample)
916	self._store_float('ns:SASsample/ns:temperature',
917	dom, 'temperature', data_info.sample)
918
919	nodes = dom.xpath('ns:SASsample/ns:details', namespaces={'ns': CANSAS_NS})
920	for item in nodes:
921	try:
922	if item.text is not None:
923	detail_value = item.text.strip()
924	if len(detail_value) > 0:
925	data_info.sample.details.append(detail_value)
926	except:
927	err_mess = "cansas_reader.read: error processing sample details\n %s" % sys.exc_value
928	self.errors.append(err_mess)
929	logging.error(err_mess)
930
931	# Position (as a vector)
932	self._store_float('ns:SASsample/ns:position/ns:x',
933	dom, 'position.x', data_info.sample)
934	self._store_float('ns:SASsample/ns:position/ns:y',
935	dom, 'position.y', data_info.sample)
936	self._store_float('ns:SASsample/ns:position/ns:z',
937	dom, 'position.z', data_info.sample)
938
939	# Orientation (as a vector)
940	self._store_float('ns:SASsample/ns:orientation/ns:roll',
941	dom, 'orientation.x', data_info.sample)
942	self._store_float('ns:SASsample/ns:orientation/ns:pitch',
943	dom, 'orientation.y', data_info.sample)
944	self._store_float('ns:SASsample/ns:orientation/ns:yaw',
945	dom, 'orientation.z', data_info.sample)
946
947	# Source info ###################
948	entry = get_content('ns:SASinstrument/ns:SASsource', dom)
949	if entry is not None:
950	data_info.source.name = entry.get('name')
951
952	self._store_content('ns:SASinstrument/ns:SASsource/ns:radiation',
953	dom, 'radiation', data_info.source)
954	self._store_content('ns:SASinstrument/ns:SASsource/ns:beam_shape',
955	dom, 'beam_shape', data_info.source)
956	self._store_float('ns:SASinstrument/ns:SASsource/ns:wavelength',
957	dom, 'wavelength', data_info.source)
958	self._store_float('ns:SASinstrument/ns:SASsource/ns:wavelength_min',
959	dom, 'wavelength_min', data_info.source)
960	self._store_float('ns:SASinstrument/ns:SASsource/ns:wavelength_max',
961	dom, 'wavelength_max', data_info.source)
962	self._store_float('ns:SASinstrument/ns:SASsource/ns:wavelength_spread',
963	dom, 'wavelength_spread', data_info.source)
964
965	# Beam size (as a vector)
966	entry = get_content('ns:SASinstrument/ns:SASsource/ns:beam_size', dom)
967	if entry is not None:
968	data_info.source.beam_size_name = entry.get('name')
969
970	self._store_float('ns:SASinstrument/ns:SASsource/ns:beam_size/ns:x',
971	dom, 'beam_size.x', data_info.source)
972	self._store_float('ns:SASinstrument/ns:SASsource/ns:beam_size/ns:y',
973	dom, 'beam_size.y', data_info.source)
974	self._store_float('ns:SASinstrument/ns:SASsource/ns:beam_size/ns:z',
975	dom, 'beam_size.z', data_info.source)
976
977	# Collimation info ###################
978	nodes = dom.xpath('ns:SASinstrument/ns:SAScollimation', namespaces={'ns': CANSAS_NS})
979	for item in nodes:
980	collim = Collimation()
981	if item.get('name') is not None:
982	collim.name = item.get('name')
983	self._store_float('ns:length', item, 'length', collim)
984
985	# Look for apertures
986	apert_list = item.xpath('ns:aperture', namespaces={'ns': CANSAS_NS})
987	for apert in apert_list:
988	aperture = Aperture()
989
990	# Get the name and type of the aperture
991	aperture.name = apert.get('name')
992	aperture.type = apert.get('type')
993
994	self._store_float('ns:distance', apert, 'distance', aperture)
995
996	entry = get_content('ns:size', apert)
997	if entry is not None:
998	aperture.size_name = entry.get('name')
999
1000	self._store_float('ns:size/ns:x', apert, 'size.x', aperture)
1001	self._store_float('ns:size/ns:y', apert, 'size.y', aperture)
1002	self._store_float('ns:size/ns:z', apert, 'size.z', aperture)
1003
1004	collim.aperture.append(aperture)
1005
1006	data_info.collimation.append(collim)
1007
1008	# Detector info ######################
1009	nodes = dom.xpath('ns:SASinstrument/ns:SASdetector', namespaces={'ns': CANSAS_NS})
1010	for item in nodes:
1011
1012	detector = Detector()
1013
1014	self._store_content('ns:name', item, 'name', detector)
1015	self._store_float('ns:SDD', item, 'distance', detector)
1016
1017	# Detector offset (as a vector)
1018	self._store_float('ns:offset/ns:x', item, 'offset.x', detector)
1019	self._store_float('ns:offset/ns:y', item, 'offset.y', detector)
1020	self._store_float('ns:offset/ns:z', item, 'offset.z', detector)
1021
1022	# Detector orientation (as a vector)
1023	self._store_float('ns:orientation/ns:roll', item, 'orientation.x', detector)
1024	self._store_float('ns:orientation/ns:pitch', item, 'orientation.y', detector)
1025	self._store_float('ns:orientation/ns:yaw', item, 'orientation.z', detector)
1026
1027	# Beam center (as a vector)
1028	self._store_float('ns:beam_center/ns:x', item, 'beam_center.x', detector)
1029	self._store_float('ns:beam_center/ns:y', item, 'beam_center.y', detector)
1030	self._store_float('ns:beam_center/ns:z', item, 'beam_center.z', detector)
1031
1032	# Pixel size (as a vector)
1033	self._store_float('ns:pixel_size/ns:x', item, 'pixel_size.x', detector)
1034	self._store_float('ns:pixel_size/ns:y', item, 'pixel_size.y', detector)
1035	self._store_float('ns:pixel_size/ns:z', item, 'pixel_size.z', detector)
1036
1037	self._store_float('ns:slit_length', item, 'slit_length', detector)
1038
1039	data_info.detector.append(detector)
1040
1041	# Processes info ######################
1042	nodes = dom.xpath('ns:SASprocess', namespaces={'ns': CANSAS_NS})
1043	for item in nodes:
1044	process = Process()
1045	self._store_content('ns:name', item, 'name', process)
1046	self._store_content('ns:date', item, 'date', process)
1047	self._store_content('ns:description', item, 'description', process)
1048
1049	term_list = item.xpath('ns:term', namespaces={'ns': CANSAS_NS})
1050	for term in term_list:
1051	try:
1052	term_attr = {}
1053	for attr in term.keys():
1054	term_attr[attr] = term.get(attr).strip()
1055	if term.text is not None:
1056	term_attr['value'] = term.text.strip()
1057	process.term.append(term_attr)
1058	except:
1059	err_mess = "cansas_reader.read: error processing process term\n %s" % sys.exc_value
1060	self.errors.append(err_mess)
1061	logging.error(err_mess)
1062
1063	note_list = item.xpath('ns:SASprocessnote', namespaces={'ns': CANSAS_NS})
1064	for note in note_list:
1065	if note.text is not None:
1066	process.notes.append(note.text.strip())
1067
1068	data_info.process.append(process)
1069
1070
1071	# Data info ######################
1072	nodes = dom.xpath('ns:SASdata', namespaces={'ns': CANSAS_NS})
1073	if len(nodes)>1:
1074	raise RuntimeError, "CanSAS reader is not compatible with multiple SASdata entries"
1075
1076	for entry in nodes:
1077	for item in list_of_data_2d_attr:
1078	#get node
1079	node = get_content('ns:%s'%item[0], entry)
1080	exec "data_info.%s = parse_entry_helper(node, item)"%(item[1])
1081
1082	for item in list_of_data2d_values:
1083	field = get_content('ns:%s'%item[0], entry)
1084	list = []
1085	if field is not None:
1086	list = [parse_entry_helper(node, item) for node in field]
1087	exec "data_info.%s = numpy.array(list)"%item[0]
1088
1089	return data_info
1090
1091	def _read_cansas(self, path):
1092	"""
1093	Load data and P(r) information from a CanSAS XML file.
1094
1095	:param path: file path
1096
1097	:return: Data1D object if a single SASentry was found,
1098	or a list of Data1D objects if multiple entries were found,
1099	or None of nothing was found
1100
1101	:raise RuntimeError: when the file can't be opened
1102	:raise ValueError: when the length of the data vectors are inconsistent
1103
1104	"""
1105	output = []
1106	basename = os.path.basename(path)
1107	root, extension = os.path.splitext(basename)
1108	ext = extension.lower()
1109	try:
1110	if os.path.isfile(path):
1111
1112	#TODO: eventually remove the check for .xml once
1113	# the P(r) writer/reader is truly complete.
1114	if ext in self.ext or \
1115	ext == '.xml':
1116
1117	tree = etree.parse(path, parser=etree.ETCompatXMLParser())
1118	# Check the format version number
1119	# Specifying the namespace will take care of the file format version
1120	root = tree.getroot()
1121	entry_list = root.xpath('ns:SASentry', namespaces={'ns': CANSAS_NS})
1122	for entry in entry_list:
1123	try:
1124	sas_entry = self._parse_entry(entry)
1125	except:
1126	raise
1127	fitstate = self._parse_state(entry)
1128
1129	#state could be None when .svs file is loaded
1130	#in this case, skip appending to output
1131	if fitstate != None:
1132	sas_entry.meta_data['fitstate'] = fitstate
1133	sas_entry.filename = fitstate.file
1134	output.append(sas_entry)
1135	else:
1136	self.call_back(format=ext)
1137	raise RuntimeError, "%s is not a file" % path
1138
1139	# Return output consistent with the loader's api
1140	if len(output)==0:
1141	self.call_back(state=None, datainfo=None,format=ext)
1142	return None
1143	else:
1144	for ind in range(len(output)):
1145	# Call back to post the new state
1146	state = output[ind].meta_data['fitstate']
1147	t = time.localtime(state.timestamp)
1148	time_str = time.strftime("%b %d %H:%M", t)
1149	# Check that no time stamp is already appended
1150	max_char = state.file.find("[")
1151	if max_char < 0:
1152	max_char = len(state.file)
1153	original_fname = state.file[0:max_char]
1154	state.file = original_fname +' [' + time_str + ']'
1155
1156
1157	if state is not None and state.is_data is not None:
1158	exec 'output[%d].is_data = state.is_data'% ind
1159
1160	output[ind].filename = state.file
1161	state.data = output[ind]
1162	state.data.name = output[ind].filename #state.data_name
1163	state.data.id = state.data_id
1164	if state.is_data is not None:
1165	state.data.is_data = state.is_data
1166	if output[ind].run_name is not None and len(output[ind].run_name) != 0 :
1167	name = output[ind].run_name
1168	else:
1169	name=original_fname
1170	state.data.group_id = name
1171	#store state in fitting
1172	self.call_back(state=state, datainfo=output[ind],format=ext)
1173	return output
1174
1175	except:
1176	self.call_back(format=ext)
1177	raise
1178
1179	def write(self, filename, datainfo=None, fitstate=None):
1180	"""
1181	Write the content of a Data1D as a CanSAS XML file only for standalone
1182
1183	:param filename: name of the file to write
1184	:param datainfo: Data1D object
1185	:param fitstate: PageState object
1186
1187	"""
1188	# Sanity check
1189	if self.cansas == True:
1190
1191	# Add fitting information to the XML document
1192	doc = self.write_toXML(datainfo, fitstate)
1193	# Write the XML document
1194	fd = open(filename, 'w')
1195	fd.write(doc.toprettyxml())
1196	fd.close()
1197	else:
1198	fitstate.toXML(file=filename)
1199
1200	def write_toXML(self, datainfo=None, state=None):
1201	"""
1202	Write toXML, a helper for write() , could be used by guimanager._on_save()
1203
1204	: return: xml doc
1205	"""
1206
1207	if state.data is None:
1208	data = DataLoader.data_info.Data1D(x=[], y=[])
1209	else:
1210	#make sure title and data run is filled up.
1211	if state.data.title == None or state.data.title=='': state.data.title = state.data.name
1212	if state.data.run_name == None or state.data.run_name=={}:
1213	state.data.run = [str(state.data.name)]
1214	state.data.run_name[0] = state.data.name
1215
1216	if issubclass(state.data.__class__, DataLoader.data_info.Data1D):
1217
1218	data = state.data
1219	doc, sasentry = self._to_xml_doc(data)
1220	else:
1221	data = state.data
1222	doc, sasentry = self._data2d_to_xml_doc(data)
1223
1224
1225	if state is not None:
1226	state.toXML(doc=doc, file=data.name, entry_node=sasentry)
1227
1228	return doc
1229
1230	if __name__ == "__main__":
1231	state = PageState(parent=None)
1232	#state.toXML()
1233	"""
1234
1235	file = open("test_state", "w")
1236	pickle.dump(state, file)
1237	print pickle.dumps(state)
1238	state.data_name = "hello---->"
1239	pickle.dump(state, file)
1240	file = open("test_state", "r")
1241	new_state= pickle.load(file)
1242	print "new state", new_state
1243	new_state= pickle.load(file)
1244	print "new state", new_state
1245	#print "state", state
1246	"""
1247	import bsddb
1248	import pickle
1249	db= bsddb.btopen('file_state.db', 'c')
1250	val = (pickle.dumps(state), "hello", "hi")
1251	db['state1']= pickle.dumps(val)
1252	print pickle.loads(db['state1'])
1253	state.data_name = "hello---->22"
1254	db['state2']= pickle.dumps(state)
1255	state.data_name = "hello---->2"
1256	db['state3']= pickle.dumps(state)
1257	del db['state3']
1258	state.data_name = "hello---->3"
1259	db['state4']= pickle.dumps(state)
1260	new_state = pickle.loads(db['state1'])
1261	#print db.last()
1262	db.set_location('state2')
1263	state.data_name = "hello---->5"
1264	db['aastate5']= pickle.dumps(state)
1265	db.keys().sort()
1266	print pickle.loads(db['state2'])
1267
1268	db.close()

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SasView

source: sasview/sansview/perspectives/fitting/pagestate.py @ a0da535

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