source: sasview/src/sas/qtgui/Perspectives/Inversion/InversionPerspective.py @ bb6b037

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 bb6b037 was bb6b037, checked in by krzywon, 6 years ago

Handle data removal from the P(r) perspective.

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File size: 25.4 KB
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1import sys
2import logging
3import pylab
4import numpy as np
5
6from PyQt5 import QtGui, QtCore, QtWidgets
7
8# sas-global
9import sas.qtgui.Utilities.GuiUtils as GuiUtils
10
11# pr inversion GUI elements
12from .InversionUtils import WIDGETS
13from .UI.TabbedInversionUI import Ui_PrInversion
14from .InversionLogic import InversionLogic
15
16# pr inversion calculation elements
17from sas.sascalc.pr.invertor import Invertor
18
19def is_float(value):
20    """Converts text input values to floats. Empty strings throw ValueError"""
21    try:
22        return float(value)
23    except ValueError:
24        return 0.0
25
26NUMBER_OF_TERMS = 10
27REGULARIZATION = 0.0001
28BACKGROUND_INPUT = 0.0
29MAX_DIST = 140.0
30DICT_KEYS = ["Calculator", "PrPlot", "DataPlot"]
31
32
33# TODO: Update help with batch capabilities
34# TODO: Method to export results in some meaningful way
35class InversionWindow(QtWidgets.QDialog, Ui_PrInversion):
36    """
37    The main window for the P(r) Inversion perspective.
38    """
39
40    name = "Inversion"
41    estimateSignal = QtCore.pyqtSignal(tuple)
42    estimateNTSignal = QtCore.pyqtSignal(tuple)
43    calculateSignal = QtCore.pyqtSignal(tuple)
44
45    def __init__(self, parent=None, data=None):
46        super(InversionWindow, self).__init__()
47        self.setupUi(self)
48
49        self.setWindowTitle("P(r) Inversion Perspective")
50
51        self._manager = parent
52        self.communicate = GuiUtils.Communicate()
53
54        self.logic = InversionLogic()
55
56        # The window should not close
57        self._allow_close = False
58
59        # Visible data set items
60        # current QStandardItem showing on the panel
61        self._data = None
62        # Reference to Dmax window for self._data
63        self.dmaxWindow = None
64        # p(r) calculator for self._data
65        self._calculator = Invertor()
66        # Default to background estimate
67        self._calculator.est_bck = True
68        # plots of self._data
69        self.pr_plot = None
70        self.data_plot = None
71        # suggested nTerms
72        self.nTermsSuggested = NUMBER_OF_TERMS
73
74        # Calculation threads used by all data items
75        self.calc_thread = None
76        self.estimation_thread = None
77        self.estimation_thread_nt = None
78
79        # Mapping for all data items
80        # list mapping data to all parameters
81        self._data_list = {}
82        if not isinstance(data, list):
83            data_list = [data]
84        if data is not None:
85            for datum in data_list:
86                self.updateDataList(datum)
87
88        self.enableButtons()
89
90        self.model = QtGui.QStandardItemModel(self)
91        self.mapper = QtWidgets.QDataWidgetMapper(self)
92
93        # Add validators
94        self.setupValidators()
95        # Link user interactions with methods
96        self.setupLinks()
97        # Set values
98        self.setupModel()
99        # Set up the Widget Map
100        self.setupMapper()
101        # Set base window state
102        self.setupWindow()
103
104    ######################################################################
105    # Base Perspective Class Definitions
106
107    def communicator(self):
108        return self.communicate
109
110    def allowBatch(self):
111        return True
112
113    def setClosable(self, value=True):
114        """
115        Allow outsiders close this widget
116        """
117        assert isinstance(value, bool)
118        self._allow_close = value
119
120    def closeEvent(self, event):
121        """
122        Overwrite QDialog close method to allow for custom widget close
123        """
124        if self._allow_close:
125            # reset the closability flag
126            self.setClosable(value=False)
127            # Tell the MdiArea to close the container
128            self.parentWidget().close()
129            event.accept()
130        else:
131            event.ignore()
132            # Maybe we should just minimize
133            self.setWindowState(QtCore.Qt.WindowMinimized)
134
135    ######################################################################
136    # Initialization routines
137
138    def setupLinks(self):
139        """Connect the use controls to their appropriate methods"""
140        self.dataList.currentIndexChanged.connect(self.displayChange)
141        self.calculateAllButton.clicked.connect(self.startThreadAll)
142        self.calculateThisButton.clicked.connect(self.startThread)
143        self.removeButton.clicked.connect(self.removeData)
144        self.helpButton.clicked.connect(self.help)
145        self.estimateBgd.toggled.connect(self.toggleBgd)
146        self.manualBgd.toggled.connect(self.toggleBgd)
147        self.regConstantSuggestionButton.clicked.connect(self.acceptAlpha)
148        self.noOfTermsSuggestionButton.clicked.connect(self.acceptNoTerms)
149        self.explorerButton.clicked.connect(self.openExplorerWindow)
150
151        self.backgroundInput.editingFinished.connect(
152            lambda: self.set_background(self.backgroundInput.text()))
153        self.minQInput.editingFinished.connect(
154            lambda: self._calculator.set_qmin(is_float(self.minQInput.text())))
155        self.regularizationConstantInput.editingFinished.connect(
156            lambda: self._calculator.set_alpha(is_float(self.regularizationConstantInput.text())))
157        self.maxDistanceInput.editingFinished.connect(
158            lambda: self._calculator.set_dmax(is_float(self.maxDistanceInput.text())))
159        self.maxQInput.editingFinished.connect(
160            lambda: self._calculator.set_qmax(is_float(self.maxQInput.text())))
161        self.slitHeightInput.editingFinished.connect(
162            lambda: self._calculator.set_slit_height(is_float(self.slitHeightInput.text())))
163        self.slitWidthInput.editingFinished.connect(
164            lambda: self._calculator.set_slit_width(is_float(self.slitHeightInput.text())))
165
166        self.model.itemChanged.connect(self.model_changed)
167        self.estimateNTSignal.connect(self._estimateNTUpdate)
168        self.estimateSignal.connect(self._estimateUpdate)
169        self.calculateSignal.connect(self._calculateUpdate)
170
171    def setupMapper(self):
172        # Set up the mapper.
173        self.mapper.setOrientation(QtCore.Qt.Vertical)
174        self.mapper.setModel(self.model)
175
176        # Filename
177        self.mapper.addMapping(self.dataList, WIDGETS.W_FILENAME)
178        # Background
179        self.mapper.addMapping(self.backgroundInput, WIDGETS.W_BACKGROUND_INPUT)
180        self.mapper.addMapping(self.estimateBgd, WIDGETS.W_ESTIMATE)
181        self.mapper.addMapping(self.manualBgd, WIDGETS.W_MANUAL_INPUT)
182
183        # Qmin/Qmax
184        self.mapper.addMapping(self.minQInput, WIDGETS.W_QMIN)
185        self.mapper.addMapping(self.maxQInput, WIDGETS.W_QMAX)
186
187        # Slit Parameter items
188        self.mapper.addMapping(self.slitWidthInput, WIDGETS.W_SLIT_WIDTH)
189        self.mapper.addMapping(self.slitHeightInput, WIDGETS.W_SLIT_HEIGHT)
190
191        # Parameter Items
192        self.mapper.addMapping(self.regularizationConstantInput, WIDGETS.W_REGULARIZATION)
193        self.mapper.addMapping(self.regConstantSuggestionButton, WIDGETS.W_REGULARIZATION_SUGGEST)
194        self.mapper.addMapping(self.explorerButton, WIDGETS.W_EXPLORE)
195        self.mapper.addMapping(self.maxDistanceInput, WIDGETS.W_MAX_DIST)
196        self.mapper.addMapping(self.noOfTermsInput, WIDGETS.W_NO_TERMS)
197        self.mapper.addMapping(self.noOfTermsSuggestionButton, WIDGETS.W_NO_TERMS_SUGGEST)
198
199        # Output
200        self.mapper.addMapping(self.rgValue, WIDGETS.W_RG)
201        self.mapper.addMapping(self.iQ0Value, WIDGETS.W_I_ZERO)
202        self.mapper.addMapping(self.backgroundValue, WIDGETS.W_BACKGROUND_OUTPUT)
203        self.mapper.addMapping(self.computationTimeValue, WIDGETS.W_COMP_TIME)
204        self.mapper.addMapping(self.chiDofValue, WIDGETS.W_CHI_SQUARED)
205        self.mapper.addMapping(self.oscillationValue, WIDGETS.W_OSCILLATION)
206        self.mapper.addMapping(self.posFractionValue, WIDGETS.W_POS_FRACTION)
207        self.mapper.addMapping(self.sigmaPosFractionValue, WIDGETS.W_SIGMA_POS_FRACTION)
208
209        # Main Buttons
210        self.mapper.addMapping(self.removeButton, WIDGETS.W_REMOVE)
211        self.mapper.addMapping(self.calculateAllButton, WIDGETS.W_CALCULATE_ALL)
212        self.mapper.addMapping(self.calculateThisButton, WIDGETS.W_CALCULATE_VISIBLE)
213        self.mapper.addMapping(self.helpButton, WIDGETS.W_HELP)
214
215        self.mapper.toFirst()
216
217    def setupModel(self):
218        """
219        Update boxes with initial values
220        """
221        item = QtGui.QStandardItem(str(BACKGROUND_INPUT))
222        self.model.setItem(WIDGETS.W_BACKGROUND_INPUT, item)
223        item = QtGui.QStandardItem("")
224        self.model.setItem(WIDGETS.W_QMIN, item)
225        item = QtGui.QStandardItem("")
226        self.model.setItem(WIDGETS.W_QMAX, item)
227        item = QtGui.QStandardItem("")
228        self.model.setItem(WIDGETS.W_SLIT_WIDTH, item)
229        item = QtGui.QStandardItem("")
230        self.model.setItem(WIDGETS.W_SLIT_HEIGHT, item)
231        item = QtGui.QStandardItem(str(NUMBER_OF_TERMS))
232        self.model.setItem(WIDGETS.W_NO_TERMS, item)
233        item = QtGui.QStandardItem(str(REGULARIZATION))
234        self.model.setItem(WIDGETS.W_REGULARIZATION, item)
235        item = QtGui.QStandardItem(str(MAX_DIST))
236        self.model.setItem(WIDGETS.W_MAX_DIST, item)
237        item = QtGui.QStandardItem("")
238        self.model.setItem(WIDGETS.W_RG, item)
239        item = QtGui.QStandardItem("")
240        self.model.setItem(WIDGETS.W_I_ZERO, item)
241        item = QtGui.QStandardItem("")
242        self.model.setItem(WIDGETS.W_BACKGROUND_OUTPUT, item)
243        item = QtGui.QStandardItem("")
244        self.model.setItem(WIDGETS.W_COMP_TIME, item)
245        item = QtGui.QStandardItem("")
246        self.model.setItem(WIDGETS.W_CHI_SQUARED, item)
247        item = QtGui.QStandardItem("")
248        self.model.setItem(WIDGETS.W_OSCILLATION, item)
249        item = QtGui.QStandardItem("")
250        self.model.setItem(WIDGETS.W_POS_FRACTION, item)
251        item = QtGui.QStandardItem("")
252        self.model.setItem(WIDGETS.W_SIGMA_POS_FRACTION, item)
253
254    def setupWindow(self):
255        """Initialize base window state on init"""
256        self.enableButtons()
257        self.estimateBgd.setChecked(True)
258
259    def setupValidators(self):
260        """Apply validators to editable line edits"""
261        self.noOfTermsInput.setValidator(QtGui.QIntValidator())
262        self.regularizationConstantInput.setValidator(GuiUtils.DoubleValidator())
263        self.maxDistanceInput.setValidator(GuiUtils.DoubleValidator())
264        self.minQInput.setValidator(GuiUtils.DoubleValidator())
265        self.maxQInput.setValidator(GuiUtils.DoubleValidator())
266        self.slitHeightInput.setValidator(GuiUtils.DoubleValidator())
267        self.slitWidthInput.setValidator(GuiUtils.DoubleValidator())
268
269    ######################################################################
270    # Methods for updating GUI
271
272    def enableButtons(self):
273        """
274        Enable buttons when data is present, else disable them
275        """
276        self.calculateAllButton.setEnabled(self.logic.data_is_loaded)
277        self.calculateThisButton.setEnabled(self.logic.data_is_loaded)
278        self.removeButton.setEnabled(self.logic.data_is_loaded)
279        self.explorerButton.setEnabled(self.logic.data_is_loaded)
280        self.regConstantSuggestionButton.setEnabled(
281            self._calculator.suggested_alpha != self._calculator.alpha)
282        self.noOfTermsSuggestionButton.setEnabled(
283            self._calculator.nfunc != self.nTermsSuggested)
284
285    def populateDataComboBox(self, filename, data_ref):
286        """
287        Append a new file name to the data combobox
288        :param filename: data filename
289        :param data_ref: QStandardItem reference for data set to be added
290        """
291        self.dataList.addItem(filename, data_ref)
292
293    def acceptNoTerms(self):
294        """Send estimated no of terms to input"""
295        self.model.setItem(WIDGETS.W_NO_TERMS, QtGui.QStandardItem(
296            self.noOfTermsSuggestionButton.text()))
297
298    def acceptAlpha(self):
299        """Send estimated alpha to input"""
300        self.model.setItem(WIDGETS.W_REGULARIZATION, QtGui.QStandardItem(
301            self.regConstantSuggestionButton.text()))
302
303    def displayChange(self, data_index=0):
304        """Switch to another item in the data list"""
305        self.updateDataList(self._data)
306        self.setCurrentData(self.dataList.itemData(data_index))
307
308    ######################################################################
309    # GUI Interaction Events
310
311    def update_calculator(self):
312        """Update all p(r) params"""
313        self._calculator.set_x(self.logic.data.x)
314        self._calculator.set_y(self.logic.data.y)
315        self._calculator.set_err(self.logic.data.dy)
316        self.set_background(self.backgroundInput.text())
317
318    def set_background(self, value):
319        self._calculator.background = is_float(value)
320
321    def model_changed(self):
322        """Update the values when user makes changes"""
323        if not self.mapper:
324            msg = "Unable to update P{r}. The connection between the main GUI "
325            msg += "and P(r) was severed. Attempting to restart P(r)."
326            logging.warning(msg)
327            self.setClosable(True)
328            self.close()
329            InversionWindow.__init__(self.parent(), list(self._data_list.keys()))
330            exit(0)
331        if self.pr_plot is not None:
332            title = self.pr_plot.name
333            GuiUtils.updateModelItemWithPlot(self._data, self.pr_plot, title)
334        if self.data_plot is not None:
335            title = self.data_plot.name
336            GuiUtils.updateModelItemWithPlot(self._data, self.data_plot, title)
337        if self.dmaxWindow is not None:
338            self.dmaxWindow.nfunc = self.getNFunc()
339            self.dmaxWindow.pr_state = self._calculator
340        self.mapper.toLast()
341
342    def help(self):
343        """
344        Open the P(r) Inversion help browser
345        """
346        tree_location = "/user/sasgui/perspectives/pr/pr_help.html"
347
348        # Actual file anchor will depend on the combo box index
349        # Note that we can be clusmy here, since bad current_fitter_id
350        # will just make the page displayed from the top
351        self._manager.showHelp(tree_location)
352
353    def toggleBgd(self):
354        """
355        Toggle the background between manual and estimated
356        """
357        if self.estimateBgd.isChecked():
358            self.manualBgd.setChecked(False)
359            self.backgroundInput.setEnabled(False)
360            self._calculator.set_est_bck = True
361        elif self.manualBgd.isChecked():
362            self.estimateBgd.setChecked(False)
363            self.backgroundInput.setEnabled(True)
364            self._calculator.set_est_bck = False
365        else:
366            pass
367
368    def openExplorerWindow(self):
369        """
370        Open the Explorer window to see correlations between params and results
371        """
372        from .DMaxExplorerWidget import DmaxWindow
373        self.dmaxWindow = DmaxWindow(self._calculator, self.getNFunc(), self)
374        self.dmaxWindow.show()
375
376    ######################################################################
377    # Response Actions
378
379    def setData(self, data_item=None, is_batch=False):
380        """
381        Assign new data set(s) to the P(r) perspective
382        Obtain a QStandardItem object and parse it to get Data1D/2D
383        Pass it over to the calculator
384        """
385        assert data_item is not None
386
387        if not isinstance(data_item, list):
388            msg = "Incorrect type passed to the P(r) Perspective"
389            raise AttributeError(msg)
390
391        for data in data_item:
392            if data in self._data_list.keys():
393                # Don't add data if it's already in
394                continue
395            # Create initial internal mappings
396            self.logic.data = GuiUtils.dataFromItem(data)
397            # Estimate q range
398            qmin, qmax = self.logic.computeDataRange()
399            self._calculator.set_qmin(qmin)
400            self._calculator.set_qmax(qmax)
401            self.updateDataList(data)
402            self.populateDataComboBox(self.logic.data.filename, data)
403        self.dataList.setCurrentIndex(len(self.dataList) - 1)
404        self.setCurrentData(data)
405
406    def updateDataList(self, dataRef):
407        """Save the current data state of the window into self._data_list"""
408        if dataRef is None:
409            return
410        self._data_list[dataRef] = {
411            DICT_KEYS[0]: self._calculator,
412            DICT_KEYS[1]: self.pr_plot,
413            DICT_KEYS[2]: self.data_plot
414        }
415
416    def getNFunc(self):
417        """Get the n_func value from the GUI object"""
418        try:
419            nfunc = int(self.noOfTermsInput.text())
420        except ValueError:
421            logging.error("Incorrect number of terms specified: %s"
422                          %self.noOfTermsInput.text())
423            self.noOfTermsInput.setText(str(NUMBER_OF_TERMS))
424            nfunc = NUMBER_OF_TERMS
425        return nfunc
426
427    def setCurrentData(self, data_ref):
428        """Get the data by reference and display as necessary"""
429        if data_ref is None:
430            return
431        if not isinstance(data_ref, QtGui.QStandardItem):
432            msg = "Incorrect type passed to the P(r) Perspective"
433            raise AttributeError(msg)
434        # Data references
435        self._data = data_ref
436        self.logic.data = GuiUtils.dataFromItem(data_ref)
437        self._calculator = self._data_list[data_ref].get(DICT_KEYS[0])
438        self.pr_plot = self._data_list[data_ref].get(DICT_KEYS[1])
439        self.data_plot = self._data_list[data_ref].get(DICT_KEYS[2])
440        self.performEstimate()
441
442    def updateGuiValues(self):
443        pr = self._calculator
444        out = self._calculator.out
445        cov = self._calculator.cov
446        elapsed = self._calculator.elapsed
447        alpha = self._calculator.suggested_alpha
448        self.model.setItem(WIDGETS.W_QMIN,
449                           QtGui.QStandardItem("{:.4g}".format(pr.get_qmin())))
450        self.model.setItem(WIDGETS.W_QMAX,
451                           QtGui.QStandardItem("{:.4g}".format(pr.get_qmax())))
452        self.model.setItem(WIDGETS.W_BACKGROUND_INPUT,
453                           QtGui.QStandardItem("{:.3f}".format(pr.background)))
454        self.model.setItem(WIDGETS.W_BACKGROUND_OUTPUT,
455                           QtGui.QStandardItem("{:.3g}".format(pr.background)))
456        self.model.setItem(WIDGETS.W_COMP_TIME,
457                           QtGui.QStandardItem("{:.4g}".format(elapsed)))
458        self.regConstantSuggestionButton.setText("{:-3.2g}".format(alpha))
459        self.noOfTermsSuggestionButton.setText(
460            "{:n}".format(self.nTermsSuggested))
461        self.model.setItem(WIDGETS.W_COMP_TIME,
462                           QtGui.QStandardItem("{:.2g}".format(elapsed)))
463
464        if isinstance(pr.chi2, np.ndarray):
465            self.model.setItem(WIDGETS.W_CHI_SQUARED,
466                               QtGui.QStandardItem("{:.3g}".format(pr.chi2[0])))
467        if out is not None:
468            self.model.setItem(WIDGETS.W_RG,
469                               QtGui.QStandardItem("{:.3g}".format(pr.rg(out))))
470            self.model.setItem(WIDGETS.W_I_ZERO,
471                               QtGui.QStandardItem(
472                                   "{:.3g}".format(pr.iq0(out))))
473            self.model.setItem(WIDGETS.W_OSCILLATION, QtGui.QStandardItem(
474                "{:.3g}".format(pr.oscillations(out))))
475            self.model.setItem(WIDGETS.W_POS_FRACTION, QtGui.QStandardItem(
476                "{:.3g}".format(pr.get_positive(out))))
477            if cov is not None:
478                self.model.setItem(WIDGETS.W_SIGMA_POS_FRACTION,
479                                   QtGui.QStandardItem(
480                                       "{:.3g}".format(
481                                           pr.get_pos_err(out, cov))))
482        self.enableButtons()
483
484    def removeData(self):
485        """Remove the existing data reference from the P(r) Persepective"""
486        if self.dmaxWindow is not None:
487            self.dmaxWindow.close()
488            self.dmaxWindow = None
489        current_data = self._data
490        self.dataList.removeItem(self.dataList.currentIndex())
491        self._data_list.pop(current_data)
492        # Last file removed
493        if len(self._data_list) == 0:
494            self._data = None
495            self.pr_plot = None
496            self.data_plot = None
497            self._calculator = Invertor()
498            self.logic.data = None
499            self.nTermsSuggested = NUMBER_OF_TERMS
500            self.noOfTermsSuggestionButton.setText("{:n}".format(
501                self.nTermsSuggested))
502            self.regConstantSuggestionButton.setText("{:-3.2g}".format(
503                REGULARIZATION))
504            self.updateGuiValues()
505            self.setupModel()
506        else:
507            self.dataList.setCurrentIndex(0)
508            self.updateGuiValues()
509
510    ######################################################################
511    # Thread Creators
512    def startThreadAll(self):
513        for data_ref in self._data_list.keys():
514            self.setCurrentData(data_ref)
515            self.startThread()
516
517    def startThread(self):
518        """
519            Start a calculation thread
520        """
521        from .Thread import CalcPr
522
523        # Set data before running the calculations
524        self.update_calculator()
525
526        # If a thread is already started, stop it
527        if self.calc_thread is not None and self.calc_thread.isrunning():
528            self.calc_thread.stop()
529        pr = self._calculator.clone()
530        nfunc = self.getNFunc()
531        self.calc_thread = CalcPr(pr, nfunc,
532                                  error_func=self._threadError,
533                                  completefn=self._calculateCompleted,
534                                  updatefn=None)
535        self.calc_thread.queue()
536        self.calc_thread.ready(2.5)
537
538    def performEstimateNT(self):
539        """
540        Perform parameter estimation
541        """
542        from .Thread import EstimateNT
543
544        self.update_calculator()
545
546        # If a thread is already started, stop it
547        if (self.estimation_thread_nt is not None and
548                self.estimation_thread_nt.isrunning()):
549            self.estimation_thread_nt.stop()
550        pr = self._calculator.clone()
551        # Skip the slit settings for the estimation
552        # It slows down the application and it doesn't change the estimates
553        pr.slit_height = 0.0
554        pr.slit_width = 0.0
555        nfunc = self.getNFunc()
556
557        self.estimation_thread_nt = EstimateNT(pr, nfunc,
558                                            error_func=self._threadError,
559                                            completefn=self._estimateNTCompleted,
560                                            updatefn=None)
561        self.estimation_thread_nt.queue()
562        self.estimation_thread_nt.ready(2.5)
563
564    def performEstimate(self):
565        """
566            Perform parameter estimation
567        """
568        from .Thread import EstimatePr
569
570        # If a thread is already started, stop it
571        if (self.estimation_thread is not None and
572                self.estimation_thread.isrunning()):
573            self.estimation_thread.stop()
574        self.estimation_thread = EstimatePr(self._calculator.clone(),
575                                            self.getNFunc(),
576                                            error_func=self._threadError,
577                                            completefn=self._estimateCompleted,
578                                            updatefn=None)
579        self.estimation_thread.queue()
580        self.estimation_thread.ready(2.5)
581
582    ######################################################################
583    # Thread Complete
584
585    def _estimateCompleted(self, alpha, message, elapsed):
586        ''' Send a signal to the main thread for model update'''
587        self.estimateSignal.emit((alpha, message, elapsed))
588
589    def _estimateUpdate(self, output_tuple):
590        """
591        Parameter estimation completed,
592        display the results to the user
593
594        :param alpha: estimated best alpha
595        :param elapsed: computation time
596        """
597        alpha, message, elapsed = output_tuple
598        if message:
599            logging.info(message)
600        self.performEstimateNT()
601
602    def _estimateNTCompleted(self, nterms, alpha, message, elapsed):
603        ''' Send a signal to the main thread for model update'''
604        self.estimateNTSignal.emit((nterms, alpha, message, elapsed))
605
606    def _estimateNTUpdate(self, output_tuple):
607        """
608        Parameter estimation completed,
609        display the results to the user
610
611        :param alpha: estimated best alpha
612        :param nterms: estimated number of terms
613        :param elapsed: computation time
614        """
615        nterms, alpha, message, elapsed = output_tuple
616        self._calculator.elapsed = elapsed
617        self._calculator.suggested_alpha = alpha
618        self.nTermsSuggested = nterms
619        # Save useful info
620        self.updateGuiValues()
621        if message:
622            logging.info(message)
623
624    def _calculateCompleted(self, out, cov, pr, elapsed):
625        ''' Send a signal to the main thread for model update'''
626        self.calculateSignal.emit((out, cov, pr, elapsed))
627
628    def _calculateUpdate(self, output_tuple):
629        """
630        Method called with the results when the inversion is done
631
632        :param out: output coefficient for the base functions
633        :param cov: covariance matrix
634        :param pr: Invertor instance
635        :param elapsed: time spent computing
636        """
637        out, cov, pr, elapsed = output_tuple
638        # Save useful info
639        cov = np.ascontiguousarray(cov)
640        pr.cov = cov
641        pr.out = out
642        pr.elapsed = elapsed
643
644        # Save Pr invertor
645        self._calculator = pr
646
647        # Create new P(r) and fit plots
648        if self.pr_plot is None:
649            self.pr_plot = self.logic.newPRPlot(out, self._calculator, cov)
650        if self.data_plot is None:
651            self.data_plot = self.logic.new1DPlot(out, self._calculator)
652        self.updateDataList(self._data)
653        self.updateGuiValues()
654
655    def _threadError(self, error):
656        """
657            Call-back method for calculation errors
658        """
659        logging.warning(error)
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