source: sasview/src/sas/qtgui/Perspectives/Inversion/InversionPerspective.py @ ba4e3ba

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 ba4e3ba was ba4e3ba, checked in by krzywon, 6 years ago

P(r) fixes.
  • Property mode set to 100644
File size: 25.5 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", "DMaxWindow", "NFuncEst"]
31
32
33# TODO: Explore window not working
34# TODO: Update help with batch capabilities
35# TODO: Method to export results in some meaningful way
36class InversionWindow(QtWidgets.QDialog, Ui_PrInversion):
37    """
38    The main window for the P(r) Inversion perspective.
39    """
40
41    name = "Inversion"
42    estimateSignal = QtCore.pyqtSignal(tuple)
43    estimateNTSignal = QtCore.pyqtSignal(tuple)
44    calculateSignal = QtCore.pyqtSignal(tuple)
45
46    def __init__(self, parent=None, data=None):
47        super(InversionWindow, self).__init__()
48        self.setupUi(self)
49
50        self.setWindowTitle("P(r) Inversion Perspective")
51
52        self._manager = parent
53        self.communicate = GuiUtils.Communicate()
54
55        self.logic = InversionLogic()
56
57        # The window should not close
58        self._allow_close = False
59
60        # Visible data set items
61        # current QStandardItem showing on the panel
62        self._data = None
63        # current Data1D as referenced by self._data
64        self._data_set = None
65        # Reference to Dmax window for self._data
66        self.dmaxWindow = None
67        # p(r) calculator for self._data
68        self._calculator = Invertor()
69        # Default to background estimate
70        self._calculator.set_est_bck(True)
71        # plots of self._data
72        self.pr_plot = None
73        self.data_plot = None
74        # suggested nTerms
75        self.nTermsSuggested = NUMBER_OF_TERMS
76
77        # Calculation threads used by all data items
78        self.calc_thread = None
79        self.estimation_thread = None
80
81        # Mapping for all data items
82        # list mapping data to all parameters
83        self._data_list = {}
84        if not isinstance(data, list):
85            data_list = [data]
86        if data is not None:
87            for datum in data_list:
88                self.updateDataList(datum)
89
90        self.enableButtons()
91
92        self.model = QtGui.QStandardItemModel(self)
93        self.mapper = QtWidgets.QDataWidgetMapper(self)
94
95        # Add validators
96        self.setupValidators()
97        # Link user interactions with methods
98        self.setupLinks()
99        # Set values
100        self.setupModel()
101        # Set up the Widget Map
102        self.setupMapper()
103        # Set base window state
104        self.setupWindow()
105
106    ######################################################################
107    # Base Perspective Class Definitions
108
109    def communicator(self):
110        return self.communicate
111
112    def allowBatch(self):
113        return True
114
115    def setClosable(self, value=True):
116        """
117        Allow outsiders close this widget
118        """
119        assert isinstance(value, bool)
120        self._allow_close = value
121
122    def closeEvent(self, event):
123        """
124        Overwrite QDialog close method to allow for custom widget close
125        """
126        if self._allow_close:
127            # reset the closability flag
128            self.setClosable(value=False)
129            # Tell the MdiArea to close the container
130            self.parentWidget().close()
131            event.accept()
132        else:
133            event.ignore()
134            # Maybe we should just minimize
135            self.setWindowState(QtCore.Qt.WindowMinimized)
136
137    ######################################################################
138    # Initialization routines
139
140    def setupLinks(self):
141        """Connect the use controls to their appropriate methods"""
142        self.dataList.currentIndexChanged.connect(self.displayChange)
143        self.calculateAllButton.clicked.connect(self.startThreadAll)
144        self.calculateThisButton.clicked.connect(self.startThread)
145        self.removeButton.clicked.connect(self.removeData)
146        self.helpButton.clicked.connect(self.help)
147        self.estimateBgd.toggled.connect(self.toggleBgd)
148        self.manualBgd.toggled.connect(self.toggleBgd)
149        self.regConstantSuggestionButton.clicked.connect(self.acceptAlpha)
150        self.noOfTermsSuggestionButton.clicked.connect(self.acceptNoTerms)
151        self.explorerButton.clicked.connect(self.openExplorerWindow)
152
153        self.backgroundInput.editingFinished.connect(
154            lambda: self._calculator.set_background(is_float(self.backgroundInput.text())))
155        self.minQInput.editingFinished.connect(
156            lambda: self._calculator.set_qmin(is_float(self.minQInput.text())))
157        self.regularizationConstantInput.editingFinished.connect(
158            lambda: self._calculator.set_alpha(is_float(self.regularizationConstantInput.text())))
159        self.maxDistanceInput.editingFinished.connect(
160            lambda: self._calculator.set_dmax(is_float(self.maxDistanceInput.text())))
161        self.maxQInput.editingFinished.connect(
162            lambda: self._calculator.set_qmax(is_float(self.maxQInput.text())))
163        self.slitHeightInput.editingFinished.connect(
164            lambda: self._calculator.set_slit_height(is_float(self.slitHeightInput.text())))
165        self.slitWidthInput.editingFinished.connect(
166            lambda: self._calculator.set_slit_width(is_float(self.slitHeightInput.text())))
167
168        self.model.itemChanged.connect(self.model_changed)
169        self.estimateNTSignal.connect(self._estimateNTUpdate)
170        self.estimateSignal.connect(self._estimateUpdate)
171        self.calculateSignal.connect(self._calculateUpdate)
172
173    def setupMapper(self):
174        # Set up the mapper.
175        self.mapper.setOrientation(QtCore.Qt.Vertical)
176        self.mapper.setModel(self.model)
177
178        # Filename
179        self.mapper.addMapping(self.dataList, WIDGETS.W_FILENAME)
180        # Background
181        self.mapper.addMapping(self.backgroundInput, WIDGETS.W_BACKGROUND_INPUT)
182        self.mapper.addMapping(self.estimateBgd, WIDGETS.W_ESTIMATE)
183        self.mapper.addMapping(self.manualBgd, WIDGETS.W_MANUAL_INPUT)
184
185        # Qmin/Qmax
186        self.mapper.addMapping(self.minQInput, WIDGETS.W_QMIN)
187        self.mapper.addMapping(self.maxQInput, WIDGETS.W_QMAX)
188
189        # Slit Parameter items
190        self.mapper.addMapping(self.slitWidthInput, WIDGETS.W_SLIT_WIDTH)
191        self.mapper.addMapping(self.slitHeightInput, WIDGETS.W_SLIT_HEIGHT)
192
193        # Parameter Items
194        self.mapper.addMapping(self.regularizationConstantInput, WIDGETS.W_REGULARIZATION)
195        self.mapper.addMapping(self.regConstantSuggestionButton, WIDGETS.W_REGULARIZATION_SUGGEST)
196        self.mapper.addMapping(self.explorerButton, WIDGETS.W_EXPLORE)
197        self.mapper.addMapping(self.maxDistanceInput, WIDGETS.W_MAX_DIST)
198        self.mapper.addMapping(self.noOfTermsInput, WIDGETS.W_NO_TERMS)
199        self.mapper.addMapping(self.noOfTermsSuggestionButton, WIDGETS.W_NO_TERMS_SUGGEST)
200
201        # Output
202        self.mapper.addMapping(self.rgValue, WIDGETS.W_RG)
203        self.mapper.addMapping(self.iQ0Value, WIDGETS.W_I_ZERO)
204        self.mapper.addMapping(self.backgroundValue, WIDGETS.W_BACKGROUND_OUTPUT)
205        self.mapper.addMapping(self.computationTimeValue, WIDGETS.W_COMP_TIME)
206        self.mapper.addMapping(self.chiDofValue, WIDGETS.W_CHI_SQUARED)
207        self.mapper.addMapping(self.oscillationValue, WIDGETS.W_OSCILLATION)
208        self.mapper.addMapping(self.posFractionValue, WIDGETS.W_POS_FRACTION)
209        self.mapper.addMapping(self.sigmaPosFractionValue, WIDGETS.W_SIGMA_POS_FRACTION)
210
211        # Main Buttons
212        self.mapper.addMapping(self.removeButton, WIDGETS.W_REMOVE)
213        self.mapper.addMapping(self.calculateAllButton, WIDGETS.W_CALCULATE_ALL)
214        self.mapper.addMapping(self.calculateThisButton, WIDGETS.W_CALCULATE_VISIBLE)
215        self.mapper.addMapping(self.helpButton, WIDGETS.W_HELP)
216
217        self.mapper.toFirst()
218
219    def setupModel(self):
220        """
221        Update boxes with initial values
222        """
223        item = QtGui.QStandardItem("")
224        self.model.setItem(WIDGETS.W_FILENAME, item)
225        item = QtGui.QStandardItem(str(BACKGROUND_INPUT))
226        self.model.setItem(WIDGETS.W_BACKGROUND_INPUT, item)
227        item = QtGui.QStandardItem("")
228        self.model.setItem(WIDGETS.W_QMIN, item)
229        item = QtGui.QStandardItem("")
230        self.model.setItem(WIDGETS.W_QMAX, item)
231        item = QtGui.QStandardItem("")
232        self.model.setItem(WIDGETS.W_SLIT_WIDTH, item)
233        item = QtGui.QStandardItem("")
234        self.model.setItem(WIDGETS.W_SLIT_HEIGHT, item)
235        item = QtGui.QStandardItem(str(NUMBER_OF_TERMS))
236        self.model.setItem(WIDGETS.W_NO_TERMS, item)
237        item = QtGui.QStandardItem(str(REGULARIZATION))
238        self.model.setItem(WIDGETS.W_REGULARIZATION, item)
239        item = QtGui.QStandardItem(str(MAX_DIST))
240        self.model.setItem(WIDGETS.W_MAX_DIST, item)
241        item = QtGui.QStandardItem("")
242        self.model.setItem(WIDGETS.W_RG, item)
243        item = QtGui.QStandardItem("")
244        self.model.setItem(WIDGETS.W_I_ZERO, item)
245        item = QtGui.QStandardItem("")
246        self.model.setItem(WIDGETS.W_BACKGROUND_OUTPUT, item)
247        item = QtGui.QStandardItem("")
248        self.model.setItem(WIDGETS.W_COMP_TIME, item)
249        item = QtGui.QStandardItem("")
250        self.model.setItem(WIDGETS.W_CHI_SQUARED, item)
251        item = QtGui.QStandardItem("")
252        self.model.setItem(WIDGETS.W_OSCILLATION, item)
253        item = QtGui.QStandardItem("")
254        self.model.setItem(WIDGETS.W_POS_FRACTION, item)
255        item = QtGui.QStandardItem("")
256        self.model.setItem(WIDGETS.W_SIGMA_POS_FRACTION, item)
257
258    def setupWindow(self):
259        """Initialize base window state on init"""
260        self.enableButtons()
261        self.estimateBgd.setChecked(True)
262
263    def setupValidators(self):
264        """Apply validators to editable line edits"""
265        self.noOfTermsInput.setValidator(QtGui.QIntValidator())
266        self.regularizationConstantInput.setValidator(GuiUtils.DoubleValidator())
267        self.maxDistanceInput.setValidator(GuiUtils.DoubleValidator())
268        self.minQInput.setValidator(GuiUtils.DoubleValidator())
269        self.maxQInput.setValidator(GuiUtils.DoubleValidator())
270        self.slitHeightInput.setValidator(GuiUtils.DoubleValidator())
271        self.slitWidthInput.setValidator(GuiUtils.DoubleValidator())
272
273    ######################################################################
274    # Methods for updating GUI
275
276    def enableButtons(self):
277        """
278        Enable buttons when data is present, else disable them
279        """
280        self.calculateAllButton.setEnabled(self.logic.data_is_loaded)
281        self.calculateThisButton.setEnabled(self.logic.data_is_loaded)
282        self.removeButton.setEnabled(self.logic.data_is_loaded)
283        self.explorerButton.setEnabled(self.logic.data_is_loaded)
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):
304        """Switch to another item in the data list"""
305        ref_item = self.dataList.itemData(self.dataList.currentIndex())
306        self.updateDataList(ref_item)
307        self.setCurrentData(ref_item)
308
309    ######################################################################
310    # GUI Interaction Events
311
312    def update_calculator(self):
313        """Update all p(r) params"""
314        self._calculator.set_x(self._data_set.x)
315        self._calculator.set_y(self._data_set.y)
316        self._calculator.set_err(self._data_set.dy)
317
318    def model_changed(self):
319        """Update the values when user makes changes"""
320        if not self.mapper:
321            msg = "Unable to update P{r}. The connection between the main GUI "
322            msg += "and P(r) was severed. Attempting to restart P(r)."
323            logging.warning(msg)
324            self.setClosable(True)
325            self.close()
326            InversionWindow.__init__(self.parent(), list(self._data_list.keys()))
327            exit(0)
328        if self.pr_plot is not None:
329            title = self.pr_plot.name
330            GuiUtils.updateModelItemWithPlot(self._data, self.pr_plot, title)
331        if self.data_plot is not None:
332            title = self.data_plot.name
333            GuiUtils.updateModelItemWithPlot(self._data, self.data_plot, title)
334        if self.dmaxWindow is not None:
335            self.dmaxWindow.pr_state = self._calculator
336            self.dmaxWindow.nfunc = self.getNFunc()
337            self.dmaxWindow.modelChanged()
338        self.mapper.toFirst()
339
340    def help(self):
341        """
342        Open the P(r) Inversion help browser
343        """
344        tree_location = "/user/sasgui/perspectives/pr/pr_help.html"
345
346        # Actual file anchor will depend on the combo box index
347        # Note that we can be clusmy here, since bad current_fitter_id
348        # will just make the page displayed from the top
349        self._manager.showHelp(tree_location)
350
351    def toggleBgd(self):
352        """
353        Toggle the background between manual and estimated
354        """
355        sender = self.sender()
356        if sender is self.estimateBgd:
357            self.backgroundInput.setEnabled(False)
358            self._calculator.set_est_bck = True
359        else:
360            self.backgroundInput.setEnabled(True)
361            self._calculator.set_est_bck = False
362
363    def openExplorerWindow(self):
364        """
365        Open the Explorer window to see correlations between params and results
366        """
367        from .DMaxExplorerWidget import DmaxWindow
368        self.dmaxWindow = DmaxWindow(self._calculator, self.getNFunc(), self)
369        self.dmaxWindow.show()
370
371    ######################################################################
372    # Response Actions
373
374    def setData(self, data_item=None, is_batch=False):
375        """
376        Assign new data set(s) to the P(r) perspective
377        Obtain a QStandardItem object and parse it to get Data1D/2D
378        Pass it over to the calculator
379        """
380        assert data_item is not None
381
382        if not isinstance(data_item, list):
383            msg = "Incorrect type passed to the P(r) Perspective"
384            raise AttributeError(msg)
385
386        for data in data_item:
387            if data in self._data_list.keys():
388                # Don't add data if it's already in
389                return
390            # Create initial internal mappings
391            self._data_set = GuiUtils.dataFromItem(data)
392            self.logic = InversionLogic(self._data_set)
393            self.populateDataComboBox(self._data_set.filename, data)
394            # Estimate q range
395            qmin, qmax = self.logic.computeDataRange()
396            self._calculator.set_qmin(qmin)
397            self._calculator.set_qmax(qmax)
398            self.updateDataList(data)
399            self.setCurrentData(data)
400            # Estimate initial values from data
401            self.performEstimate()
402        self.enableButtons()
403        self.updateGuiValues()
404
405    def updateDataList(self, dataRef):
406        """Save the current data state of the window into self._data_list"""
407        if dataRef is None:
408            return
409        self._data_list[dataRef] = {
410            DICT_KEYS[0]: self._calculator,
411            DICT_KEYS[1]: self.pr_plot,
412            DICT_KEYS[2]: self.data_plot,
413            DICT_KEYS[3]: self.dmaxWindow,
414            DICT_KEYS[4]: self.nTermsSuggested
415        }
416
417    def getNFunc(self):
418        """Get the n_func value from the GUI object"""
419        try:
420            nfunc = int(self.noOfTermsInput.text())
421        except ValueError:
422            logging.error("Incorrect number of terms specified: %s" %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._data_set = 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.dmaxWindow = self._data_list[data_ref].get(DICT_KEYS[3])
441        self.nTermsSuggested = self._data_list[data_ref].get(DICT_KEYS[4])
442        self.logic.set_data = self._data_set
443        self.updateGuiValues()
444
445    def updateGuiValues(self):
446        pr = self._calculator
447        out = self._calculator.out
448        cov = self._calculator.cov
449        elapsed = self._calculator.elapsed
450        alpha = self._calculator.suggested_alpha
451        nterms = self._calculator.nfunc
452        self.model.setItem(WIDGETS.W_QMIN,
453                           QtGui.QStandardItem("{:.4g}".format(pr.get_qmin())))
454        self.model.setItem(WIDGETS.W_QMAX,
455                           QtGui.QStandardItem("{:.4g}".format(pr.get_qmax())))
456        self.model.setItem(WIDGETS.W_BACKGROUND_INPUT,
457                           QtGui.QStandardItem("{:.3f}".format(pr.background)))
458        self.model.setItem(WIDGETS.W_BACKGROUND_OUTPUT,
459                           QtGui.QStandardItem("{:.3g}".format(pr.background)))
460        self.model.setItem(WIDGETS.W_COMP_TIME,
461                           QtGui.QStandardItem("{:.4g}".format(elapsed)))
462        if alpha != 0:
463            self.regConstantSuggestionButton.setText("{:-3.2g}".format(alpha))
464        self.regConstantSuggestionButton.setEnabled(alpha != self._calculator.alpha)
465        if nterms != self.nTermsSuggested:
466            self.noOfTermsSuggestionButton.setText(
467                "{:n}".format(self.nTermsSuggested))
468        self.noOfTermsSuggestionButton.setEnabled(nterms != self.nTermsSuggested)
469        self.model.setItem(WIDGETS.W_COMP_TIME,
470                           QtGui.QStandardItem("{:.2g}".format(elapsed)))
471
472        if isinstance(pr.chi2, np.ndarray):
473            self.model.setItem(WIDGETS.W_CHI_SQUARED,
474                               QtGui.QStandardItem("{:.3g}".format(pr.chi2[0])))
475        if out is not None:
476            self.model.setItem(WIDGETS.W_RG,
477                               QtGui.QStandardItem("{:.3g}".format(pr.rg(out))))
478            self.model.setItem(WIDGETS.W_I_ZERO,
479                               QtGui.QStandardItem(
480                                   "{:.3g}".format(pr.iq0(out))))
481            self.model.setItem(WIDGETS.W_OSCILLATION, QtGui.QStandardItem(
482                "{:.3g}".format(pr.oscillations(out))))
483            self.model.setItem(WIDGETS.W_POS_FRACTION, QtGui.QStandardItem(
484                "{:.3g}".format(pr.get_positive(out))))
485            if cov is not None:
486                self.model.setItem(WIDGETS.W_SIGMA_POS_FRACTION,
487                                   QtGui.QStandardItem(
488                                       "{:.3g}".format(
489                                           pr.get_pos_err(out, cov))))
490
491    def removeData(self):
492        """Remove the existing data reference from the P(r) Persepective"""
493        if self.dmaxWindow is not None:
494            self.dmaxWindow = None
495        self.dataList.removeItem(self.dataList.currentIndex())
496        self._data_list.pop(self._data)
497        # Last file removed
498        if len(self._data_list) == 0:
499            self._data = None
500            self.pr_plot = None
501            self._data_set = None
502            self._calculator = Invertor()
503            self.logic.data = None
504            self.enableButtons()
505        else:
506            self.dataList.setCurrentIndex(0)
507            self.updateGuiValues()
508
509    ######################################################################
510    # Thread Creators
511    def startThreadAll(self):
512        for data_ref in self._data_list.keys():
513            self.setCurrentData(data_ref)
514            self.startThread()
515
516    def startThread(self):
517        """
518            Start a calculation thread
519        """
520        from .Thread import CalcPr
521
522        # Set data before running the calculations
523        self.update_calculator()
524
525        # If a thread is already started, stop it
526        if self.calc_thread is not None and self.calc_thread.isrunning():
527            self.calc_thread.stop()
528        pr = self._calculator.clone()
529        nfunc = self.getNFunc()
530        self.calc_thread = CalcPr(pr, nfunc,
531                                  error_func=self._threadError,
532                                  completefn=self._calculateCompleted,
533                                  updatefn=None)
534        self.calc_thread.queue()
535        self.calc_thread.ready(2.5)
536
537    def performEstimateNT(self):
538        """
539        Perform parameter estimation
540        """
541        from .Thread import EstimateNT
542
543        # If a thread is already started, stop it
544        if (self.estimation_thread is not None and
545                self.estimation_thread.isrunning()):
546            self.estimation_thread.stop()
547        pr = self._calculator.clone()
548        # Skip the slit settings for the estimation
549        # It slows down the application and it doesn't change the estimates
550        pr.slit_height = 0.0
551        pr.slit_width = 0.0
552        nfunc = self.getNFunc()
553
554        self.estimation_thread = EstimateNT(pr, nfunc,
555                                            error_func=self._threadError,
556                                            completefn=self._estimateNTCompleted,
557                                            updatefn=None)
558        self.estimation_thread.queue()
559        self.estimation_thread.ready(2.5)
560
561    def performEstimate(self):
562        """
563            Perform parameter estimation
564        """
565        from .Thread import EstimatePr
566
567        self.startThread()
568
569        # If a thread is already started, stop it
570        if (self.estimation_thread is not None and
571                self.estimation_thread.isrunning()):
572            self.estimation_thread.stop()
573        pr = self._calculator.clone()
574        nfunc = self.getNFunc()
575        self.estimation_thread = EstimatePr(pr, nfunc,
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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