ResolutionCalculatorPanel.py @ 1309205b

Last change on this file since 1309205b was fa05c6c1, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Minor stability fixes for some calculators
Property mode set to `100644`
File size: 30.6 KB

Line
1	"""
2	This object is a small tool to allow user to quickly
3	determine the variance in q from the
4	instrumental parameters.
5	"""
6	from PyQt5 import QtCore
7	from PyQt5 import QtGui
8	from PyQt5 import QtWidgets
9
10	from twisted.internet import threads
11	import sas.qtgui.Utilities.GuiUtils as GuiUtils
12	from sas.qtgui.Plotting.PlotterData import Data2D
13	from sas.qtgui.Plotting.Plotter2D import Plotter2DWidget
14	from sas.sascalc.calculator.resolution_calculator import ResolutionCalculator
15	import matplotlib.patches as patches
16
17	import numpy
18	import sys
19	import logging
20	import os
21	import re
22
23	from .UI.ResolutionCalculatorPanelUI import Ui_ResolutionCalculatorPanel
24
25	_SOURCE_MASS = {'Alpha': 6.64465620E-24,
26	'Deuteron': 3.34358320E-24,
27	'Neutron': 1.67492729E-24,
28	'Photon': 0.0,
29	'Proton': 1.67262137E-24,
30	'Triton': 5.00826667E-24}
31
32	BG_WHITE = "background-color: rgb(255, 255, 255);"
33	BG_RED = "background-color: rgb(244, 170, 164);"
34
35
36	class ResolutionCalculatorPanel(QtWidgets.QDialog, Ui_ResolutionCalculatorPanel):
37	"""
38	compute resolution in 2D
39	"""
40	def __init__(self, parent=None):
41	super(ResolutionCalculatorPanel, self).__init__()
42	self.setupUi(self)
43	self.manager = parent
44
45	# New font to display angstrom symbol
46	new_font = 'font-family: -apple-system, "Helvetica Neue", "Ubuntu";'
47	self.lblUnitWavelength.setStyleSheet(new_font)
48	self.lblUnitQx.setStyleSheet(new_font)
49	self.lblUnitQy.setStyleSheet(new_font)
50	self.lblUnitSigmax.setStyleSheet(new_font)
51	self.lblUnitSigmay.setStyleSheet(new_font)
52	self.lblUnitSigmalamd.setStyleSheet(new_font)
53	self.lblUnit1DSigma.setStyleSheet(new_font)
54
55	# by default Spectrum label and cbCustomSpectrum are not visible
56	self.cbCustomSpectrum.setVisible(False)
57	self.lblSpectrum.setVisible(False)
58	# self.onReset()
59
60	# change index of comboboxes
61	self.cbWaveColor.currentIndexChanged.connect(self.onSelectWaveColor)
62	self.cbCustomSpectrum.currentIndexChanged.connect(self.onSelectCustomSpectrum)
63
64	# push buttons
65	self.cmdClose.clicked.connect(self.accept)
66	self.cmdHelp.clicked.connect(self.onHelp)
67	self.cmdCompute.clicked.connect(self.onCompute)
68	self.cmdReset.clicked.connect(self.onReset)
69
70	# input defaults
71	self.qx = []
72	self.qy = []
73	# dQ defaults
74	self.sigma_r = None
75	self.sigma_phi = None
76	self.sigma_1d = None
77
78	# number of bins for wavelength and wavelength spread
79	self.num_wave = 10
80	self.spectrum_dic = {}
81
82	# dQ 2d image
83	self.image = None
84	# Source selection dic
85	self.source_mass = _SOURCE_MASS
86	# detector coordinate of estimation of sigmas
87	self.det_coordinate = 'cartesian'
88
89	self.resolution = ResolutionCalculator()
90	self.spectrum_dic['Add new'] = ''
91	self.spectrum_dic['Flat'] = self.resolution.get_default_spectrum()
92	self.resolution.set_spectrum(self.spectrum_dic['Flat'])
93
94	# validators
95	self.txtWavelength.editingFinished.connect(self.checkWavelength)
96	self.txtWavelengthSpread.editingFinished.connect(self.checkWavelengthSpread)
97
98	self.txtDetectorPixSize.editingFinished.connect(self.checkPixels)
99	self.txtDetectorSize.editingFinished.connect(self.checkPixels)
100
101	self.txtSourceApertureSize.editingFinished.connect(self.checkAperture)
102	self.txtSampleApertureSize.editingFinished.connect(self.checkAperture)
103
104	self.txtQx.editingFinished.connect(self.checkQx_y)
105	self.txtQy.editingFinished.connect(self.checkQx_y)
106
107	# double validator
108	self.txtSource2SampleDistance.setValidator(GuiUtils.DoubleValidator())
109	self.txtSample2DetectorDistance.setValidator(GuiUtils.DoubleValidator())
110	self.txtSampleOffset.setValidator(GuiUtils.DoubleValidator())
111
112	# call compute to calculate with default values
113	self.createTemplate2DPlot()
114	#self.onCompute()
115
116	# #################################
117	# Validators: red background in line edits when wrong input
118	# and display of info logging message
119	# #################################
120
121	def checkWavelength(self):
122	""" Validator for Wavelength
123	if TOF, wavelength = min - max else only one number """
124	text_edit = self.txtWavelength # self.sender()
125	if text_edit.isModified():
126	text_edit.setStyleSheet(BG_WHITE)
127	input_string = str(text_edit.text())
128	if self.cbWaveColor.currentText() != 'TOF':
129	input_wavelength = re.match('\d+\.?\d*', input_string)
130	if input_wavelength is None:
131	text_edit.setStyleSheet(BG_RED)
132	self.cmdCompute.setEnabled(False)
133	logging.info('Wavelength has to be a number.')
134	else:
135	text_edit.setStyleSheet(BG_WHITE)
136	self.cmdCompute.setEnabled(True)
137	else:
138	interval_wavelength = re.match('^\d+\.?\d\s-\s\d+\.?\d$',
139	input_string)
140
141	if interval_wavelength is None:
142	text_edit.setStyleSheet(BG_RED)
143	self.cmdCompute.setEnabled(False)
144	logging.info("Wavelength's input has to be an interval: "
145	"min - max.")
146	else:
147	# check on min < max
148	[wavelength_min, wavelength_max] = \
149	re.findall('\d+\.?\d*', interval_wavelength.group())
150
151	if float(wavelength_min) >= float(wavelength_max):
152	text_edit.setStyleSheet(BG_RED)
153	self.cmdCompute.setEnabled(False)
154	logging.info("Wavelength: min must be smaller than max.")
155
156	else:
157	text_edit.setStyleSheet(BG_WHITE)
158	self.cmdCompute.setEnabled(True)
159
160	def checkWavelengthSpread(self):
161	""" Validator for WavelengthSpread
162	Input can be a 'number or min - max (; Number of bins)' """
163	text_edit = self.sender()
164
165	if text_edit.isModified():
166	text_edit.setStyleSheet(BG_WHITE)
167	if self.cbWaveColor.currentText() != 'TOF':
168	pattern = '^\d+\.?\d(\|;\s\d+)$'
169	input_string = str(text_edit.text())
170	wavelength_spread_input = re.match(pattern, input_string)
171
172	if wavelength_spread_input is None:
173	text_edit.setStyleSheet(BG_RED)
174	self.cmdCompute.setEnabled(False)
175	logging.info('Wavelength spread has to be specified: '
176	'single value or value; integer number of bins.')
177
178	else:
179	split_input = wavelength_spread_input.group().split(';')
180	self.num_wave = split_input[1] if len(split_input) > 1 else 10
181	text_edit.setStyleSheet(BG_WHITE)
182	self.cmdCompute.setEnabled(True)
183	else:
184	pattern = '^\d+\.?\d\s-\s\d+\.?\d(\|;\s*\d+)$'
185	input_string = str(text_edit.text())
186	wavelength_spread_input = re.match(pattern, input_string)
187
188	if wavelength_spread_input is None:
189	text_edit.setStyleSheet(BG_RED)
190	self.cmdCompute.setEnabled(False)
191	logging.info("Wavelength spread has to be specified: "
192	"doublet separated by '-' with optional "
193	"number of bins (given after ';'). "
194	"For example, 0.1 - 0.1 (; 20).")
195
196	else:
197	split_input = wavelength_spread_input.group().split(';')
198	self.num_wave = split_input[1] if len(
199	split_input) > 1 else 10
200	text_edit.setStyleSheet(BG_WHITE)
201	self.cmdCompute.setEnabled(True)
202
203	def checkPixels(self):
204	""" Validator for detector pixel size and number """
205	text_edit = self.sender()
206
207	if text_edit.isModified():
208	text_edit.setStyleSheet(BG_WHITE)
209	pattern = '^\d+\.?\d,\s\d+\.?\d*$'
210	input_string = str(text_edit.text())
211	pixels_input = re.match(pattern, input_string)
212
213	if pixels_input is None:
214	text_edit.setStyleSheet(BG_RED)
215	self.cmdCompute.setEnabled(False)
216	logging.info('The input for the detector should contain 2 '
217	'values separated by a comma.')
218
219	else:
220	text_edit.setStyleSheet(BG_WHITE)
221	self.cmdCompute.setEnabled(True)
222
223	def checkQx_y(self):
224	""" Validator for qx and qy inputs """
225	Q_modified = [self.txtQx.isModified(), self.txtQy.isModified()]
226	if any(Q_modified):
227	pattern = '^-?\d+\.?\d(,\s-?\d+\.?\d)$'
228	text_edit = self.txtQx if Q_modified[0] else self.txtQy
229	input_string = str(text_edit.text())
230	q_input = re.match(pattern, input_string)
231	if q_input is None:
232	text_edit.setStyleSheet(BG_RED)
233	self.cmdCompute.setEnabled(False)
234	logging.info('Qx and Qy should contain one or more comma-separated numbers.')
235	else:
236	text_edit.setStyleSheet(BG_WHITE)
237	self.cmdCompute.setEnabled(True)
238	qx = str(self.txtQx.text()).split(',')
239	qy = str(self.txtQy.text()).split(',')
240
241	if len(qx) == 1 and len(qy) > 1:
242	fill_qx = ', '.join([qx[0]] * len(qy))
243	self.txtQx.setText(fill_qx)
244
245	elif len(qy) == 1 and len(qx) > 1:
246	fill_qy = ', '.join([qy[0]] * len(qx))
247	self.txtQy.setText(fill_qy)
248
249	elif len(qx) != len(qy):
250	text_edit.setStyleSheet(BG_RED)
251	self.cmdCompute.setEnabled(False)
252	logging.info(
253	'Qx and Qy should have the same number of elements.')
254
255	else:
256	text_edit.setStyleSheet(BG_WHITE)
257	self.cmdCompute.setEnabled(True)
258
259	def checkAperture(self):
260	""" Validator for Sample and Source apertures"""
261	text_edit = self.sender()
262
263	if text_edit.isModified():
264	text_edit.setStyleSheet(BG_WHITE)
265	input_string = str(text_edit.text())
266	pattern = '^\d+\.?\d(\|,\s\d+)$'
267	aperture_input = re.match(pattern, input_string)
268
269	if aperture_input is None:
270	text_edit.setStyleSheet(BG_RED)
271	self.cmdCompute.setEnabled(False)
272	logging.info('A circular aperture is defined by a single '
273	'value (diameter). A rectangular aperture is '
274	'defined by 2 values separated by a comma.')
275
276	else:
277	text_edit.setStyleSheet(BG_WHITE)
278	self.cmdCompute.setEnabled(True)
279
280	# #################################
281	# Slots associated with signals from comboboxes
282	# #################################
283
284	def onSelectWaveColor(self):
285	""" Modify layout of GUI when TOF selected: add elements
286	and modify default entry of Wavelength """
287	list_wdata = self.resolution.get_wave_list()
288	min_lambda = min(list_wdata[0])
289
290	min_wspread = min(list_wdata[1])
291	max_wspread = max(list_wdata[1])
292
293	if self.cbWaveColor.currentText() == 'TOF':
294	self.cbCustomSpectrum.setVisible(True)
295	self.lblSpectrum.setVisible(True)
296	# Get information about wavelength and spread
297
298	if len(list_wdata[0]) < 2:
299	max_lambda = 2 * min_lambda
300	else:
301	max_lambda = max(list_wdata[0])
302	self.txtWavelength.setText('{} - {}'.format(min_lambda, max_lambda))
303	self.txtWavelengthSpread.setText('{} - {}'.format(min_wspread,
304	max_wspread))
305
306	else:
307	self.cbCustomSpectrum.setVisible(False)
308	self.lblSpectrum.setVisible(False)
309	# modify Wavelength line edit only if set for TOF (2 elements)
310
311	if len(self.txtWavelength.text().split('-')) >= 2:
312	self.txtWavelength.setText(str(min_lambda))
313	self.txtWavelengthSpread.setText(str(min_wspread))
314
315	def onSelectCustomSpectrum(self):
316	""" On Spectrum Combobox event"""
317	if self.cbCustomSpectrum.currentText() == 'Add New':
318	datafile = QtWidgets.QFileDialog.getOpenFileName(
319	self, "Choose a spectral distribution file","",
320	"All files (.)", None,
321	QtWidgets.QFileDialog.DontUseNativeDialog)[0]
322
323	if datafile is None or str(datafile) == '':
324	logging.info("No spectral distribution data chosen.")
325	self.cbCustomSpectrum.setCurrentIndex(0)
326	self.resolution.set_spectrum(self.spectrum_dic['Flat'])
327	return
328
329	basename = os.path.basename(datafile)
330
331	input_f = open(datafile, 'r')
332	buff = input_f.read()
333	lines = buff.split('\n')
334
335	wavelength = []
336	intensity = []
337
338	for line in lines:
339	toks = line.split()
340	try:
341	wave = float(toks[0])
342	intens = float(toks[1])
343	wavelength.append(wave)
344	intensity.append(intens)
345	except:
346	logging.info('Could not extract values from file')
347	if wavelength and intensity:
348	if basename not in list(self.spectrum_dic.keys()):
349	self.cbCustomSpectrum.addItem(basename)
350	self.spectrum_dic[basename] = [wavelength, intensity]
351	self.resolution.set_spectrum(self.spectrum_dic[basename])
352	return
353
354	# #################################
355	# Slots associated with signals from push buttons
356	# #################################
357
358	def onHelp(self):
359	"""
360	Bring up the Resolution Calculator Documentation whenever
361	the HELP button is clicked.
362	Calls Documentation Window with the path of the location within the
363	documentation tree (after /doc/ ....".
364	"""
365	location = "/user/qtgui/Calculators/resolution_calculator_help.html"
366	self.manager.showHelp(location)
367
368	def onReset(self):
369	# by default Spectrum label and cbCustomSpectrum are not visible
370	self.cbCustomSpectrum.setVisible(False)
371	self.lblSpectrum.setVisible(False)
372	# Comboboxes
373	self.cbCustomSpectrum.setCurrentIndex([self.cbCustomSpectrum.itemText(i)
374	for i in range(self.cbCustomSpectrum.count())].index('Flat'))
375	self.cbSource.setCurrentIndex([self.cbSource.itemText(i) for i in
376	range(self.cbSource.count())].index('Neutron'))
377	self.cbWaveColor.setCurrentIndex([self.cbWaveColor.itemText(i) for i
378	in range(self.cbWaveColor.count())].index('Monochromatic'))
379	# LineEdits
380	self.txtDetectorPixSize.setText('0.5, 0.5')
381	self.txtDetectorSize.setText('128, 128')
382	self.txtSample2DetectorDistance.setText('1000')
383	self.txtSampleApertureSize.setText('1.27')
384	self.txtSampleOffset.setText('0')
385	self.txtSource2SampleDistance.setText('1627')
386	self.txtSourceApertureSize.setText('3.81')
387	self.txtWavelength.setText('6.0')
388	self.txtWavelengthSpread.setText('0.125')
389	self.txtQx.setText('0.0')
390	self.txtQy.setText('0.0')
391	self.txt1DSigma.setText('0.0008289')
392	self.txtSigma_x.setText('0.0008288')
393	self.txtSigma_y.setText('0.0008288')
394	self.txtSigma_lamd.setText('3.168e-05')
395
396	self.image = None
397	self.source_mass = _SOURCE_MASS
398	self.det_coordinate = 'cartesian'
399	self.num_wave = 10
400	self.spectrum_dic = {}
401	self.spectrum_dic['Add new'] = ''
402	self.spectrum_dic['Flat'] = self.resolution.get_default_spectrum()
403	self.resolution.set_spectrum(self.spectrum_dic['Flat'])
404	# Reset plot
405	self.onCompute()
406
407	# TODO Keep legacy validators??
408	def onCompute(self):
409	"""
410	Execute the computation of resolution
411	"""
412	# Q min max list default
413	qx_min = []
414	qx_max = []
415	qy_min = []
416	qy_max = []
417	# possible max qrange
418	self.resolution.qxmin_limit = 0
419	self.resolution.qxmax_limit = 0
420	self.resolution.qymin_limit = 0
421	self.resolution.qymax_limit = 0
422
423	try:
424	# Get all the values to compute
425	wavelength = self._str2longlist(self.txtWavelength.text())
426
427	source = self.cbSource.currentText()
428	mass = self.source_mass[str(source)]
429	self.resolution.set_neutron_mass(float(mass))
430
431	wavelength_spread = self._str2longlist(\
432	self.txtWavelengthSpread.text().split(';')[0])
433	# Validate the wave inputs
434	wave_input = self._validate_q_input(wavelength, wavelength_spread)
435	if wave_input is not None:
436	wavelength, wavelength_spread = wave_input
437
438	self.resolution.set_wave(wavelength)
439	self.resolution.set_wave_spread(wavelength_spread)
440
441	# use legacy validator for correct input assignment
442
443	source_aperture_size = self.txtSourceApertureSize.text()
444	source_aperture_size = self._str2longlist(source_aperture_size)
445	self.resolution.set_source_aperture_size(source_aperture_size)
446
447	sample_aperture_size = self.txtSampleApertureSize.text()
448	sample_aperture_size = self._string2list(sample_aperture_size)
449	self.resolution.set_sample_aperture_size(sample_aperture_size)
450
451	source2sample_distance = self.txtSource2SampleDistance.text()
452	source2sample_distance = self._string2list(source2sample_distance)
453	self.resolution.set_source2sample_distance(source2sample_distance)
454
455	sample2sample_distance = self.txtSampleOffset.text()
456	sample2sample_distance = self._string2list(sample2sample_distance)
457	self.resolution.set_sample2sample_distance(sample2sample_distance)
458
459	sample2detector_distance = self.txtSample2DetectorDistance.text()
460	sample2detector_distance = self._string2list(
461	sample2detector_distance)
462	self.resolution.set_sample2detector_distance(
463	sample2detector_distance)
464
465	detector_size = self.txtDetectorSize.text()
466	detector_size = self._string2list(detector_size)
467	self.resolution.set_detector_size(detector_size)
468
469	detector_pix_size = self.txtDetectorPixSize.text()
470	detector_pix_size = self._string2list(detector_pix_size)
471	self.resolution.set_detector_pix_size(detector_pix_size)
472
473	self.qx = self._string2inputlist(self.txtQx.text())
474	self.qy = self._string2inputlist(self.txtQy.text())
475
476	# Find min max of qs
477	xmin = min(self.qx)
478	xmax = max(self.qx)
479	ymin = min(self.qy)
480	ymax = max(self.qy)
481	if not self._validate_q_input(self.qx, self.qy):
482	raise ValueError("Invalid Q input")
483	except:
484	msg = "An error occurred during the resolution computation."
485	msg += "Please check your inputs..."
486	logging.warning(msg)
487	return
488
489	# Validate the q inputs
490	q_input = self._validate_q_input(self.qx, self.qy)
491	if q_input is not None:
492	self.qx, self.qy = q_input
493
494	# Make list of q min max for mapping
495	for i in range(len(self.qx)):
496	qx_min.append(xmin)
497	qx_max.append(xmax)
498	for i in range(len(self.qy)):
499	qy_min.append(ymin)
500	qy_max.append(ymax)
501
502	# Compute the resolution
503	if self.image is not None:
504	self.resolution.reset_image()
505
506	# Compute and get the image plot
507	try:
508	cal_res = threads.deferToThread(self.map_wrapper,
509	self.calc_func,
510	self.qx,
511	self.qy,
512	qx_min,
513	qx_max,
514	qy_min, qy_max)
515
516	cal_res.addCallback(self.complete)
517	cal_res.addErrback(self.calculateFailed)
518
519	# logging.info("Computation is in progress...")
520	self.cmdCompute.setText('Wait...')
521	self.cmdCompute.setEnabled(False)
522	except:
523	raise
524
525	def calculateFailed(self, reason):
526	print("calculateFailed Failed with:\n", reason)
527	pass
528
529	def complete(self, image):
530	"""
531	Complete computation
532	"""
533	self.image = image
534
535	# Get and format the sigmas
536	sigma_r = self.formatNumber(self.resolution.sigma_1)
537	sigma_phi = self.formatNumber(self.resolution.sigma_2)
538	sigma_lamd = self.formatNumber(self.resolution.sigma_lamd)
539	sigma_1d = self.formatNumber(self.resolution.sigma_1d)
540
541	# Set output values
542	self.txtSigma_x.setText(str(sigma_r))
543	self.txtSigma_y.setText(str(sigma_phi))
544	self.txtSigma_lamd.setText(str(sigma_lamd))
545	self.txt1DSigma.setText(str(sigma_1d))
546
547	self.cmdCompute.setText('Compute')
548	self.cmdCompute.setEnabled(True)
549
550	self.new2DPlot()
551
552	return
553
554	def map_wrapper(self, func, qx, qy, qx_min, qx_max, qy_min, qy_max):
555	"""
556	Prepare the Mapping for the computation
557	: params qx, qy, qx_min, qx_max, qy_min, qy_max:
558	: return: image (numpy array)
559	"""
560	image = list(map(func, qx, qy,
561	qx_min, qx_max,
562	qy_min, qy_max))[0]
563
564	return image
565
566	def calc_func(self, qx, qy, qx_min, qx_max, qy_min, qy_max):
567	"""
568	Perform the calculation for a given set of Q values.
569	: return: image (numpy array)
570	"""
571	try:
572	qx_value = float(qx)
573	qy_value = float(qy)
574	except :
575	raise ValueError
576
577	# calculate 2D resolution distribution image
578	image = self.resolution.compute_and_plot(qx_value, qy_value,
579	qx_min, qx_max, qy_min,
580	qy_max,
581	self.det_coordinate)
582	return image
583
584	# #################################
585	# Legacy validators
586	# #################################
587	def _string2list(self, input_string):
588	"""
589	Change NNN, NNN to list,ie. [NNN, NNN] where NNN is a number
590	"""
591	new_numbers_list = []
592	# check the number of floats
593	try:
594	strg = float(input_string)
595	new_numbers_list.append(strg)
596	except:
597	string_split = input_string.split(',')
598	if len(string_split) == 1 or len(string_split) == 2:
599	new_numbers_list = [float(item) for item in string_split]
600	else:
601	msg = "The numbers must be one or two (separated by ',')"
602	logging.info(msg)
603	raise RuntimeError(msg)
604
605	return new_numbers_list
606
607	def _string2inputlist(self, input_string):
608	"""
609	Change NNN, NNN,... to list,ie. [NNN, NNN,...] where NNN is a number
610	: return new_list: string like list
611	"""
612	new_list = []
613	string_split = input_string.split(',')
614	try:
615	new_list = [float(t) for t in string_split]
616	except:
617	logging.error(sys.exc_info()[1])
618	return new_list
619
620	def _str2longlist(self, input_string):
621	"""
622	Change NNN, NNN,... to list, NNN - NNN ; NNN to list, or float to list
623	: return new_string: string like list
624	"""
625	try:
626	# is float
627	out = [float(input_string)]
628	return out
629	except:
630	if self.cbWaveColor.currentText() == 'Monochromatic':
631	logging.warning("Wrong format of inputs.")
632	else:
633	try:
634	# has a '-'
635	if input_string.count('-') > 0:
636	value = input_string.split('-')
637	if value[1].count(';') > 0:
638	# has a ';'
639	last_list = value[1].split(';')
640	num = numpy.ceil(float(last_list[1]))
641	max_value = float(last_list[0])
642	self.num_wave = num
643	else:
644	# default num
645	num = self.num_wave
646	max_value = float(value[1])
647	min_value = float(value[0])
648	# make a list
649	bin_size = numpy.fabs(max_value - min_value) / (num - 1)
650	out = [min_value + bin_size * bnum for bnum in
651	range(num)]
652	return out
653	if input_string.count(',') > 0:
654	out = self._string2inputlist(input_string)
655	return out
656	except:
657	logging.error(sys.exc_info()[1])
658
659	def _validate_q_input(self, qx, qy):
660	"""
661	Check if q inputs are valid
662	: params qx: qx as a list
663	: params qy: qy as a list
664	: return: True/False
665	"""
666	# check qualifications
667	if qx.__class__.__name__ != 'list':
668	return None
669	if qy.__class__.__name__ != 'list':
670	return None
671	if len(qx) < 1:
672	return None
673	if len(qy) < 1:
674	return None
675	# allow one input
676	if len(qx) == 1 and len(qy) > 1:
677	qx = [qx[0] for ind in range(len(qy))]
678
679	if len(qy) == 1 and len(qx) > 1:
680	qy = [qy[0] for ind in range(len(qx))]
681	# check length
682	if len(qx) != len(qy):
683	return None
684	if qx is None or qy is None:
685	return None
686	return qx, qy
687
688	def formatNumber(self, value=None):
689	"""
690	Return a float in a standardized, human-readable formatted string
691	"""
692	try:
693	value = float(value)
694	except:
695	output = None
696	return output
697
698	output = "%-7.4g" % value
699	return output.lstrip().rstrip()
700
701	# #################################
702	# Plot
703	# #################################
704
705	def createTemplate2DPlot(self):
706	"""
707	Create a template for 2D data
708	"""
709	self.plotter = Plotter2DWidget(self, quickplot=True)
710	self.plotter.scale = 'linear'
711	self.plotter.cmap = None
712	layout = QtWidgets.QHBoxLayout()
713	layout.setContentsMargins(0, 0, 0, 0)
714	self.graphicsView.setLayout(layout)
715	layout.addWidget(self.plotter)
716
717	def new2DPlot(self):
718	"""
719	Create a new 2D data instance based on computing results
720	"""
721	qx_min, qx_max, qy_min, qy_max = self.resolution.get_detector_qrange()
722
723	dx_size = (qx_max - qx_min) / (1000 - 1)
724	dy_size = (qy_max - qy_min) / (1000 - 1)
725	x_val = numpy.arange(qx_min, qx_max, dx_size)
726	y_val = numpy.arange(qy_max, qy_min, -dy_size)
727
728	if len(self.plotter.ax.patches):
729	self.plotter.ax.patches[0].remove()
730
731	self.drawLines()
732
733	self.plotter.data = Data2D(image=self.image,
734	qx_data=x_val,
735	qy_data=y_val,
736	xmin=qx_min, xmax=qx_max,
737	ymin=qy_min, ymax=qy_max)
738
739	self.plotter.plot()
740	self.plotter.show()
741	self.plotter.update()
742
743	def drawLines(self):
744	"""
745	Draw lines in image if applicable
746	"""
747	wave_list, _ = self.resolution.get_wave_list()
748	if len(wave_list) > 1 and wave_list[-1] == max(wave_list):
749	color = 'g'
750	# draw a green rectangle(limit for the longest wavelength
751	# to be involved) for tof inputs
752	# Get the params from resolution
753	# plotting range for largest wavelength
754	qx_min = self.resolution.qx_min
755	qx_max = self.resolution.qx_max
756	qy_min = self.resolution.qy_min
757	qy_max = self.resolution.qy_max
758	# detector range
759	detector_qx_min = self.resolution.detector_qx_min
760	detector_qx_max = self.resolution.detector_qx_max
761	detector_qy_min = self.resolution.detector_qy_min
762	detector_qy_max = self.resolution.detector_qy_max
763
764	rect = patches.Rectangle((detector_qx_min + 0.0002,
765	detector_qy_min + 0.0002),
766	detector_qx_max - detector_qx_min,
767	detector_qy_max - detector_qy_min,
768	linewidth=2,
769	edgecolor=color, facecolor='none')
770	self.plotter.ax.add_patch(rect)
771	else:
772	qx_min, qx_max, qy_min, qy_max = self.resolution.get_detector_qrange()
773	# detector range
774	detector_qx_min = self.resolution.qxmin_limit
775	detector_qx_max = self.resolution.qxmax_limit
776	detector_qy_min = self.resolution.qymin_limit
777	detector_qy_max = self.resolution.qymax_limit
778
779	xmin = min(self.qx)
780	xmax = max(self.qx)
781	ymin = min(self.qy)
782	ymax = max(self.qy)
783
784	if xmin < detector_qx_min or xmax > detector_qx_max or \
785	ymin < detector_qy_min or ymax > detector_qy_max:
786	# message
787	msg = 'At least one q value located out side of\n'
788	msg += " the detector range (%s < qx < %s, %s < qy < %s),\n" % \
789	(self.formatNumber(detector_qx_min),
790	self.formatNumber(detector_qx_max),
791	self.formatNumber(detector_qy_min),
792	self.formatNumber(detector_qy_max))
793	msg += " is ignored in computation.\n"
794
795	logging.warning(msg)
796
797	# Draw zero axis lines.
798	if qy_min < 0 <= qy_max:
799	self.plotter.ax.axhline(linewidth=1)
800
801	if qx_min < 0 <= qx_max:
802	self.plotter.ax.axvline(linewidth=1)

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SasView

source: sasview/src/sas/qtgui/Calculators/ResolutionCalculatorPanel.py @ 1309205b

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