GuiUtils.py @ cbcdd2c

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalc

Last change on this file since cbcdd2c was 5236449, checked in by Piotr Rozyczko <rozyczko@…>, 8 years ago
Default datasets for fitting SASVIEW-498
Property mode set to `100644`
File size: 24.6 KB

Line
1	"""
2	Global defaults and various utility functions usable by the general GUI
3	"""
4
5	import os
6	import sys
7	import imp
8	import warnings
9	import webbrowser
10	import urlparse
11
12	warnings.simplefilter("ignore")
13	import logging
14
15	from PyQt4 import QtCore
16	from PyQt4 import QtGui
17
18	# Translate event handlers
19	#from sas.sasgui.guiframe.events import EVT_CATEGORY
20	#from sas.sasgui.guiframe.events import EVT_STATUS
21	#from sas.sasgui.guiframe.events import EVT_APPEND_BOOKMARK
22	#from sas.sasgui.guiframe.events import EVT_PANEL_ON_FOCUS
23	#from sas.sasgui.guiframe.events import EVT_NEW_LOAD_DATA
24	#from sas.sasgui.guiframe.events import EVT_NEW_COLOR
25	#from sas.sasgui.guiframe.events import StatusEvent
26	#from sas.sasgui.guiframe.events import NewPlotEvent
27
28	from periodictable import formula as Formula
29
30	from sas.sasgui.plottools import transform
31	from sas.sasgui.plottools.convert_units import convert_unit
32	from sas.sasgui.guiframe.dataFitting import Data1D
33	from sas.sasgui.guiframe.dataFitting import Data2D
34	from sas.sascalc.dataloader.loader import Loader
35
36
37	def get_app_dir():
38	"""
39	The application directory is the one where the default custom_config.py
40	file resides.
41
42	:returns: app_path - the path to the applicatin directory
43	"""
44	# First, try the directory of the executable we are running
45	app_path = sys.path[0]
46	if os.path.isfile(app_path):
47	app_path = os.path.dirname(app_path)
48	if os.path.isfile(os.path.join(app_path, "custom_config.py")):
49	app_path = os.path.abspath(app_path)
50	#logging.info("Using application path: %s", app_path)
51	return app_path
52
53	# Next, try the current working directory
54	if os.path.isfile(os.path.join(os.getcwd(), "custom_config.py")):
55	#logging.info("Using application path: %s", os.getcwd())
56	return os.path.abspath(os.getcwd())
57
58	# Finally, try the directory of the sasview module
59	# TODO: gui_manager will have to know about sasview until we
60	# clean all these module variables and put them into a config class
61	# that can be passed by sasview.py.
62	#logging.info(sys.executable)
63	#logging.info(str(sys.argv))
64	from sas import sasview as sasview
65	app_path = os.path.dirname(sasview.__file__)
66	#logging.info("Using application path: %s", app_path)
67	return app_path
68
69	def get_user_directory():
70	"""
71	Returns the user's home directory
72	"""
73	userdir = os.path.join(os.path.expanduser("~"), ".sasview")
74	if not os.path.isdir(userdir):
75	os.makedirs(userdir)
76	return userdir
77
78	def _find_local_config(confg_file, path):
79	"""
80	Find configuration file for the current application
81	"""
82	config_module = None
83	fObj = None
84	try:
85	fObj, path_config, descr = imp.find_module(confg_file, [path])
86	config_module = imp.load_module(confg_file, fObj, path_config, descr)
87	except ImportError:
88	pass
89	#logging.error("Error loading %s/%s: %s" % (path, confg_file, sys.exc_value))
90	finally:
91	if fObj is not None:
92	fObj.close()
93	#logging.info("GuiManager loaded %s/%s" % (path, confg_file))
94	return config_module
95
96	# Get APP folder
97	PATH_APP = get_app_dir()
98	DATAPATH = PATH_APP
99
100	# GUI always starts from the App folder
101	#os.chdir(PATH_APP)
102	# Read in the local config, which can either be with the main
103	# application or in the installation directory
104	config = _find_local_config('local_config', PATH_APP)
105
106	if config is None:
107	config = _find_local_config('local_config', os.getcwd())
108	if config is None:
109	# Didn't find local config, load the default
110	import sas.sasgui.guiframe.config as config
111	#logging.info("using default local_config")
112	else:
113	pass
114	#logging.info("found local_config in %s", os.getcwd())
115	else:
116	pass
117	#logging.info("found local_config in %s", PATH_APP)
118
119
120	from sas.sasgui.guiframe.customdir import SetupCustom
121	c_conf_dir = SetupCustom().setup_dir(PATH_APP)
122	custom_config = _find_local_config('custom_config', c_conf_dir)
123	if custom_config is None:
124	custom_config = _find_local_config('custom_config', os.getcwd())
125	if custom_config is None:
126	msgConfig = "Custom_config file was not imported"
127	#logging.info(msgConfig)
128	else:
129	pass
130	#logging.info("using custom_config in %s", os.getcwd())
131	else:
132	pass
133	#logging.info("using custom_config from %s", c_conf_dir)
134
135	#read some constants from config
136	APPLICATION_STATE_EXTENSION = config.APPLICATION_STATE_EXTENSION
137	APPLICATION_NAME = config.__appname__
138	SPLASH_SCREEN_PATH = config.SPLASH_SCREEN_PATH
139	WELCOME_PANEL_ON = config.WELCOME_PANEL_ON
140	SPLASH_SCREEN_WIDTH = config.SPLASH_SCREEN_WIDTH
141	SPLASH_SCREEN_HEIGHT = config.SPLASH_SCREEN_HEIGHT
142	SS_MAX_DISPLAY_TIME = config.SS_MAX_DISPLAY_TIME
143	if not WELCOME_PANEL_ON:
144	WELCOME_PANEL_SHOW = False
145	else:
146	WELCOME_PANEL_SHOW = True
147	try:
148	DATALOADER_SHOW = custom_config.DATALOADER_SHOW
149	TOOLBAR_SHOW = custom_config.TOOLBAR_SHOW
150	FIXED_PANEL = custom_config.FIXED_PANEL
151	if WELCOME_PANEL_ON:
152	WELCOME_PANEL_SHOW = custom_config.WELCOME_PANEL_SHOW
153	PLOPANEL_WIDTH = custom_config.PLOPANEL_WIDTH
154	DATAPANEL_WIDTH = custom_config.DATAPANEL_WIDTH
155	GUIFRAME_WIDTH = custom_config.GUIFRAME_WIDTH
156	GUIFRAME_HEIGHT = custom_config.GUIFRAME_HEIGHT
157	CONTROL_WIDTH = custom_config.CONTROL_WIDTH
158	CONTROL_HEIGHT = custom_config.CONTROL_HEIGHT
159	DEFAULT_PERSPECTIVE = custom_config.DEFAULT_PERSPECTIVE
160	CLEANUP_PLOT = custom_config.CLEANUP_PLOT
161	# custom open_path
162	open_folder = custom_config.DEFAULT_OPEN_FOLDER
163	if open_folder != None and os.path.isdir(open_folder):
164	DEFAULT_OPEN_FOLDER = os.path.abspath(open_folder)
165	else:
166	DEFAULT_OPEN_FOLDER = PATH_APP
167	except AttributeError:
168	DATALOADER_SHOW = True
169	TOOLBAR_SHOW = True
170	FIXED_PANEL = True
171	WELCOME_PANEL_SHOW = False
172	PLOPANEL_WIDTH = config.PLOPANEL_WIDTH
173	DATAPANEL_WIDTH = config.DATAPANEL_WIDTH
174	GUIFRAME_WIDTH = config.GUIFRAME_WIDTH
175	GUIFRAME_HEIGHT = config.GUIFRAME_HEIGHT
176	CONTROL_WIDTH = -1
177	CONTROL_HEIGHT = -1
178	DEFAULT_PERSPECTIVE = None
179	CLEANUP_PLOT = False
180	DEFAULT_OPEN_FOLDER = PATH_APP
181
182	DEFAULT_STYLE = config.DEFAULT_STYLE
183
184	PLUGIN_STATE_EXTENSIONS = config.PLUGIN_STATE_EXTENSIONS
185	OPEN_SAVE_MENU = config.OPEN_SAVE_PROJECT_MENU
186	VIEW_MENU = config.VIEW_MENU
187	EDIT_MENU = config.EDIT_MENU
188	extension_list = []
189	if APPLICATION_STATE_EXTENSION is not None:
190	extension_list.append(APPLICATION_STATE_EXTENSION)
191	EXTENSIONS = PLUGIN_STATE_EXTENSIONS + extension_list
192	try:
193	PLUGINS_WLIST = '\|'.join(config.PLUGINS_WLIST)
194	except AttributeError:
195	PLUGINS_WLIST = ''
196	APPLICATION_WLIST = config.APPLICATION_WLIST
197	IS_WIN = True
198	IS_LINUX = False
199	CLOSE_SHOW = True
200	TIME_FACTOR = 2
201	NOT_SO_GRAPH_LIST = ["BoxSum"]
202
203	class Communicate(QtCore.QObject):
204	"""
205	Utility class for tracking of the Qt signals
206	"""
207	# File got successfully read
208	fileReadSignal = QtCore.pyqtSignal(list)
209
210	# Open File returns "list" of paths
211	fileDataReceivedSignal = QtCore.pyqtSignal(dict)
212
213	# Update Main window status bar with "str"
214	# Old "StatusEvent"
215	statusBarUpdateSignal = QtCore.pyqtSignal(str)
216
217	# Send data to the current perspective
218	updatePerspectiveWithDataSignal = QtCore.pyqtSignal(list)
219
220	# New data in current perspective
221	updateModelFromPerspectiveSignal = QtCore.pyqtSignal(QtGui.QStandardItem)
222
223	# New theory data in current perspective
224	updateTheoryFromPerspectiveSignal = QtCore.pyqtSignal(QtGui.QStandardItem)
225
226	# New plot requested from the GUI manager
227	# Old "NewPlotEvent"
228	plotRequestedSignal = QtCore.pyqtSignal(str)
229
230	# Progress bar update value
231	progressBarUpdateSignal = QtCore.pyqtSignal(int)
232
233	# Workspace charts added/removed
234	activeGraphsSignal = QtCore.pyqtSignal(list)
235
236	# Current workspace chart's name changed
237	activeGraphName = QtCore.pyqtSignal(tuple)
238
239	# Current perspective changed
240	perspectiveChangedSignal = QtCore.pyqtSignal(str)
241
242
243	def updateModelItemWithPlot(item, update_data, name=""):
244	"""
245	Adds a checkboxed row named "name" to QStandardItem
246	Adds QVariant 'update_data' to that row.
247	"""
248	assert isinstance(item, QtGui.QStandardItem)
249	assert isinstance(update_data, QtCore.QVariant)
250	py_update_data = update_data.toPyObject()
251
252	# Check if data with the same ID is already present
253	for index in range(item.rowCount()):
254	plot_item = item.child(index)
255	if plot_item.isCheckable():
256	plot_data = plot_item.child(0).data().toPyObject()
257	if plot_data.id == py_update_data.id:
258	item.removeRow(index)
259	break
260
261	# Create the new item
262	checkbox_item = createModelItemWithPlot(update_data, name)
263
264	# Append the new row to the main item
265	item.appendRow(checkbox_item)
266
267	def createModelItemWithPlot(update_data, name=""):
268	"""
269	Creates a checkboxed QStandardItem named "name"
270	Adds QVariant 'update_data' to that row.
271	"""
272	assert isinstance(update_data, QtCore.QVariant)
273	py_update_data = update_data.toPyObject()
274
275	checkbox_item = QtGui.QStandardItem()
276	checkbox_item.setCheckable(True)
277	checkbox_item.setCheckState(QtCore.Qt.Checked)
278	checkbox_item.setText(name)
279
280	# Add "Info" item
281	if isinstance(py_update_data, (Data1D, Data2D)):
282	# If Data1/2D added - extract Info from it
283	info_item = infoFromData(py_update_data)
284	else:
285	# otherwise just add a naked item
286	info_item = QtGui.QStandardItem("Info")
287
288	# Add the actual Data1D/Data2D object
289	object_item = QtGui.QStandardItem()
290	object_item.setData(update_data)
291
292	# Set the data object as the first child
293	checkbox_item.setChild(0, object_item)
294
295	# Set info_item as the second child
296	checkbox_item.setChild(1, info_item)
297
298	# And return the newly created item
299	return checkbox_item
300
301	def updateModelItem(item, update_data, name=""):
302	"""
303	Adds a simple named child to QStandardItem
304	"""
305	assert isinstance(item, QtGui.QStandardItem)
306	assert isinstance(update_data, list)
307
308	# Add the actual Data1D/Data2D object
309	object_item = QtGui.QStandardItem()
310	object_item.setText(name)
311	object_item.setData(QtCore.QVariant(update_data))
312
313	# Append the new row to the main item
314	item.appendRow(object_item)
315
316
317	def plotsFromCheckedItems(model_item):
318	"""
319	Returns the list of plots for items in the model which are checked
320	"""
321	assert isinstance(model_item, QtGui.QStandardItemModel)
322
323	plot_data = []
324	# Iterate over model looking for items with checkboxes
325	for index in range(model_item.rowCount()):
326	item = model_item.item(index)
327	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
328	# TODO: assure item type is correct (either data1/2D or Plotter)
329	plot_data.append((item, item.child(0).data().toPyObject()))
330	# Going 1 level deeper only
331	for index_2 in range(item.rowCount()):
332	item_2 = item.child(index_2)
333	if item_2 and item_2.isCheckable() and item_2.checkState() == QtCore.Qt.Checked:
334	# TODO: assure item type is correct (either data1/2D or Plotter)
335	plot_data.append((item_2, item_2.child(0).data().toPyObject()))
336
337	return plot_data
338
339	def infoFromData(data):
340	"""
341	Given Data1D/Data2D object, extract relevant Info elements
342	and add them to a model item
343	"""
344	assert isinstance(data, (Data1D, Data2D))
345
346	info_item = QtGui.QStandardItem("Info")
347
348	title_item = QtGui.QStandardItem("Title: " + data.title)
349	info_item.appendRow(title_item)
350	run_item = QtGui.QStandardItem("Run: " + str(data.run))
351	info_item.appendRow(run_item)
352	type_item = QtGui.QStandardItem("Type: " + str(data.__class__.__name__))
353	info_item.appendRow(type_item)
354
355	if data.path:
356	path_item = QtGui.QStandardItem("Path: " + data.path)
357	info_item.appendRow(path_item)
358
359	if data.instrument:
360	instr_item = QtGui.QStandardItem("Instrument: " + data.instrument)
361	info_item.appendRow(instr_item)
362
363	process_item = QtGui.QStandardItem("Process")
364	if isinstance(data.process, list) and data.process:
365	for process in data.process:
366	process_date = process.date
367	process_date_item = QtGui.QStandardItem("Date: " + process_date)
368	process_item.appendRow(process_date_item)
369
370	process_descr = process.description
371	process_descr_item = QtGui.QStandardItem("Description: " + process_descr)
372	process_item.appendRow(process_descr_item)
373
374	process_name = process.name
375	process_name_item = QtGui.QStandardItem("Name: " + process_name)
376	process_item.appendRow(process_name_item)
377
378	info_item.appendRow(process_item)
379
380	return info_item
381
382	def openLink(url):
383	"""
384	Open a URL in an external browser.
385	Check the URL first, though.
386	"""
387	parsed_url = urlparse.urlparse(url)
388	if parsed_url.scheme:
389	webbrowser.open(url)
390	else:
391	msg = "Attempt at opening an invalid URL"
392	raise AttributeError, msg
393
394	def retrieveData1d(data):
395	"""
396	Retrieve 1D data from file and construct its text
397	representation
398	"""
399	if not isinstance(data, Data1D):
400	msg = "Incorrect type passed to retrieveData1d"
401	raise AttributeError, msg
402	try:
403	xmin = min(data.x)
404	ymin = min(data.y)
405	except:
406	msg = "Unable to find min/max of \n data named %s" % \
407	data.filename
408	#logging.error(msg)
409	raise ValueError, msg
410
411	text = data.__str__()
412	text += 'Data Min Max:\n'
413	text += 'X_min = %s: X_max = %s\n' % (xmin, max(data.x))
414	text += 'Y_min = %s: Y_max = %s\n' % (ymin, max(data.y))
415	if data.dy != None:
416	text += 'dY_min = %s: dY_max = %s\n' % (min(data.dy), max(data.dy))
417	text += '\nData Points:\n'
418	x_st = "X"
419	for index in range(len(data.x)):
420	if data.dy != None and len(data.dy) > index:
421	dy_val = data.dy[index]
422	else:
423	dy_val = 0.0
424	if data.dx != None and len(data.dx) > index:
425	dx_val = data.dx[index]
426	else:
427	dx_val = 0.0
428	if data.dxl != None and len(data.dxl) > index:
429	if index == 0:
430	x_st = "Xl"
431	dx_val = data.dxl[index]
432	elif data.dxw != None and len(data.dxw) > index:
433	if index == 0:
434	x_st = "Xw"
435	dx_val = data.dxw[index]
436
437	if index == 0:
438	text += "<index> \t<X> \t<Y> \t<dY> \t<d%s>\n" % x_st
439	text += "%s \t%s \t%s \t%s \t%s\n" % (index,
440	data.x[index],
441	data.y[index],
442	dy_val,
443	dx_val)
444	return text
445
446	def retrieveData2d(data):
447	"""
448	Retrieve 2D data from file and construct its text
449	representation
450	"""
451	if not isinstance(data, Data2D):
452	msg = "Incorrect type passed to retrieveData2d"
453	raise AttributeError, msg
454
455	text = data.__str__()
456	text += 'Data Min Max:\n'
457	text += 'I_min = %s\n' % min(data.data)
458	text += 'I_max = %s\n\n' % max(data.data)
459	text += 'Data (First 2501) Points:\n'
460	text += 'Data columns include err(I).\n'
461	text += 'ASCII data starts here.\n'
462	text += "<index> \t<Qx> \t<Qy> \t<I> \t<dI> \t<dQparal> \t<dQperp>\n"
463	di_val = 0.0
464	dx_val = 0.0
465	dy_val = 0.0
466	len_data = len(data.qx_data)
467	for index in xrange(0, len_data):
468	x_val = data.qx_data[index]
469	y_val = data.qy_data[index]
470	i_val = data.data[index]
471	if data.err_data != None:
472	di_val = data.err_data[index]
473	if data.dqx_data != None:
474	dx_val = data.dqx_data[index]
475	if data.dqy_data != None:
476	dy_val = data.dqy_data[index]
477
478	text += "%s \t%s \t%s \t%s \t%s \t%s \t%s\n" % (index,
479	x_val,
480	y_val,
481	i_val,
482	di_val,
483	dx_val,
484	dy_val)
485	# Takes too long time for typical data2d: Break here
486	if index >= 2500:
487	text += ".............\n"
488	break
489
490	return text
491
492	def onTXTSave(data, path):
493	"""
494	Save file as formatted txt
495	"""
496	with open(path,'w') as out:
497	has_errors = True
498	if data.dy == None or data.dy == []:
499	has_errors = False
500	# Sanity check
501	if has_errors:
502	try:
503	if len(data.y) != len(data.dy):
504	has_errors = False
505	except:
506	has_errors = False
507	if has_errors:
508	if data.dx != None and data.dx != []:
509	out.write("<X> <Y> <dY> <dX>\n")
510	else:
511	out.write("<X> <Y> <dY>\n")
512	else:
513	out.write("<X> <Y>\n")
514
515	for i in range(len(data.x)):
516	if has_errors:
517	if data.dx != None and data.dx != []:
518	if data.dx[i] != None:
519	out.write("%g %g %g %g\n" % (data.x[i],
520	data.y[i],
521	data.dy[i],
522	data.dx[i]))
523	else:
524	out.write("%g %g %g\n" % (data.x[i],
525	data.y[i],
526	data.dy[i]))
527	else:
528	out.write("%g %g %g\n" % (data.x[i],
529	data.y[i],
530	data.dy[i]))
531	else:
532	out.write("%g %g\n" % (data.x[i],
533	data.y[i]))
534
535	def saveData1D(data):
536	"""
537	Save 1D data points
538	"""
539	default_name = os.path.basename(data.filename)
540	default_name, extension = os.path.splitext(default_name)
541	default_name += "_out" + extension
542
543	wildcard = "Text files (*.txt);;"\
544	"CanSAS 1D files(*.xml)"
545	kwargs = {
546	'caption' : 'Save As',
547	'directory' : default_name,
548	'filter' : wildcard,
549	'parent' : None,
550	}
551	# Query user for filename.
552	filename = QtGui.QFileDialog.getSaveFileName(**kwargs)
553
554	# User cancelled.
555	if not filename:
556	return
557
558	filename = str(filename)
559
560	#Instantiate a loader
561	loader = Loader()
562	if os.path.splitext(filename)[1].lower() == ".txt":
563	onTXTSave(data, filename)
564	if os.path.splitext(filename)[1].lower() == ".xml":
565	loader.save(filename, data, ".xml")
566
567	def saveData2D(data):
568	"""
569	Save data2d dialog
570	"""
571	default_name = os.path.basename(data.filename)
572	default_name, _ = os.path.splitext(default_name)
573	ext_format = ".dat"
574	default_name += "_out" + ext_format
575
576	wildcard = "IGOR/DAT 2D file in Q_map (*.dat)"
577	kwargs = {
578	'caption' : 'Save As',
579	'directory' : default_name,
580	'filter' : wildcard,
581	'parent' : None,
582	}
583	# Query user for filename.
584	filename = QtGui.QFileDialog.getSaveFileName(**kwargs)
585
586	# User cancelled.
587	if not filename:
588	return
589	filename = str(filename)
590	#Instantiate a loader
591	loader = Loader()
592
593	if os.path.splitext(filename)[1].lower() == ext_format:
594	loader.save(filename, data, ext_format)
595
596	class FormulaValidator(QtGui.QValidator):
597	def __init__(self, parent=None):
598	super(FormulaValidator, self).__init__(parent)
599
600	def validate(self, input, pos):
601	try:
602	Formula(str(input))
603	self._setStyleSheet("")
604	return QtGui.QValidator.Acceptable, pos
605
606	except Exception as e:
607	self._setStyleSheet("background-color:pink;")
608	return QtGui.QValidator.Intermediate, pos
609
610	def _setStyleSheet(self, value):
611	try:
612	if self.parent():
613	self.parent().setStyleSheet(value)
614	except:
615	pass
616
617	def xyTransform(data, xLabel="", yLabel=""):
618	"""
619	Transforms x and y in View and set the scale
620	"""
621	# Changing the scale might be incompatible with
622	# currently displayed data (for instance, going
623	# from ln to log when all plotted values have
624	# negative natural logs).
625	# Go linear and only change the scale at the end.
626	xscale = 'linear'
627	yscale = 'linear'
628	# Local data is either 1D or 2D
629	if data.id == 'fit':
630	return
631
632	# control axis labels from the panel itself
633	yname, yunits = data.get_yaxis()
634	xname, xunits = data.get_xaxis()
635
636	# Goes through all possible scales
637	# self.x_label is already wrapped with Latex "$", so using the argument
638
639	# X
640	if xLabel == "x":
641	data.transformX(transform.toX, transform.errToX)
642	xLabel = "%s(%s)" % (xname, xunits)
643	if xLabel == "x^(2)":
644	data.transformX(transform.toX2, transform.errToX2)
645	xunits = convert_unit(2, xunits)
646	xLabel = "%s^{2}(%s)" % (xname, xunits)
647	if xLabel == "x^(4)":
648	data.transformX(transform.toX4, transform.errToX4)
649	xunits = convert_unit(4, xunits)
650	xLabel = "%s^{4}(%s)" % (xname, xunits)
651	if xLabel == "ln(x)":
652	data.transformX(transform.toLogX, transform.errToLogX)
653	xLabel = "\ln{(%s)}(%s)" % (xname, xunits)
654	if xLabel == "log10(x)":
655	data.transformX(transform.toX_pos, transform.errToX_pos)
656	xscale = 'log'
657	xLabel = "%s(%s)" % (xname, xunits)
658	if xLabel == "log10(x^(4))":
659	data.transformX(transform.toX4, transform.errToX4)
660	xunits = convert_unit(4, xunits)
661	xLabel = "%s^{4}(%s)" % (xname, xunits)
662	xscale = 'log'
663
664	# Y
665	if yLabel == "ln(y)":
666	data.transformY(transform.toLogX, transform.errToLogX)
667	yLabel = "\ln{(%s)}(%s)" % (yname, yunits)
668	if yLabel == "y":
669	data.transformY(transform.toX, transform.errToX)
670	yLabel = "%s(%s)" % (yname, yunits)
671	if yLabel == "log10(y)":
672	data.transformY(transform.toX_pos, transform.errToX_pos)
673	yscale = 'log'
674	yLabel = "%s(%s)" % (yname, yunits)
675	if yLabel == "y^(2)":
676	data.transformY(transform.toX2, transform.errToX2)
677	yunits = convert_unit(2, yunits)
678	yLabel = "%s^{2}(%s)" % (yname, yunits)
679	if yLabel == "1/y":
680	data.transformY(transform.toOneOverX, transform.errOneOverX)
681	yunits = convert_unit(-1, yunits)
682	yLabel = "1/%s(%s)" % (yname, yunits)
683	if yLabel == "y*x^(2)":
684	data.transformY(transform.toYX2, transform.errToYX2)
685	xunits = convert_unit(2, xunits)
686	yLabel = "%s \ \ %s^{2}(%s%s)" % (yname, xname, yunits, xunits)
687	if yLabel == "y*x^(4)":
688	data.transformY(transform.toYX4, transform.errToYX4)
689	xunits = convert_unit(4, xunits)
690	yLabel = "%s \ \ %s^{4}(%s%s)" % (yname, xname, yunits, xunits)
691	if yLabel == "1/sqrt(y)":
692	data.transformY(transform.toOneOverSqrtX,
693	transform.errOneOverSqrtX)
694	yunits = convert_unit(-0.5, yunits)
695	yLabel = "1/\sqrt{%s}(%s)" % (yname, yunits)
696	if yLabel == "ln(y*x)":
697	data.transformY(transform.toLogXY, transform.errToLogXY)
698	yLabel = "\ln{(%s \ \ %s)}(%s%s)" % (yname, xname, yunits, xunits)
699	if yLabel == "ln(y*x^(2))":
700	data.transformY(transform.toLogYX2, transform.errToLogYX2)
701	xunits = convert_unit(2, xunits)
702	yLabel = "\ln (%s \ \ %s^{2})(%s%s)" % (yname, xname, yunits, xunits)
703	if yLabel == "ln(y*x^(4))":
704	data.transformY(transform.toLogYX4, transform.errToLogYX4)
705	xunits = convert_unit(4, xunits)
706	yLabel = "\ln (%s \ \ %s^{4})(%s%s)" % (yname, xname, yunits, xunits)
707	if yLabel == "log10(y*x^(4))":
708	data.transformY(transform.toYX4, transform.errToYX4)
709	xunits = convert_unit(4, xunits)
710	yscale = 'log'
711	yLabel = "%s \ \ %s^{4}(%s%s)" % (yname, xname, yunits, xunits)
712
713	# Perform the transformation of data in data1d->View
714	data.transformView()
715
716	return (xLabel, yLabel, xscale, yscale)
717
718	def dataFromItem(item):
719	"""
720	Retrieve Data1D/2D component from QStandardItem.
721	The assumption - data stored in SasView standard, in child 0
722	"""
723	return item.child(0).data().toPyObject()
724
725	def formatNumber(value, high=False):
726	"""
727	Return a float in a standardized, human-readable formatted string.
728	This is used to output readable (e.g. x.xxxe-y) values to the panel.
729	"""
730	try:
731	value = float(value)
732	except:
733	output = "NaN"
734	return output.lstrip().rstrip()
735
736	if high:
737	output = "%-6.4g" % value
738
739	else:
740	output = "%-5.3g" % value
741	return output.lstrip().rstrip()

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SasView

source: sasview/src/sas/qtgui/GuiUtils.py @ cbcdd2c

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