Skip to content

_data_model

Bases: QAbstractTableModel

Source code in src/napari_layer_table/_data_model.py 
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
class pandasModel(QtCore.QAbstractTableModel):

    #signalMyDataChanged = QtCore.pyqtSignal(object, object, object)
    signalMyDataChanged = QtCore.Signal(object, object, object)
    """Emit on user editing a cell."""

    def __init__(self, data : pd.DataFrame):
        """Data model for a pandas dataframe.

        Args:
            data (pd.dataframe): pandas dataframe
        """
        QtCore.QAbstractTableModel.__init__(self)

        self._data = data

    def rowCount(self, parent=None):
        return self._data.shape[0]

    def columnCount(self, parnet=None):
        return self._data.shape[1]

    def data(self, index, role=QtCore.Qt.DisplayRole):
        """
        QtDocs: "Returns the data stored under the given role for the item referred to by the index."

        Parameters
        ----------
        index : PyQt5.QtCore.QModelIndex
        role : 
        """
        #logger.info(f'index:{index.row()} {index.column()} {index}')
        if index.isValid():
            if role == QtCore.Qt.ToolTipRole:
                # no tooltips here
                pass
            #elif role in [QtCore.Qt.DisplayRole, QtCore.Qt.EditRole]:
            elif role in [QtCore.Qt.DisplayRole]:
                columnName = self._data.columns[index.column()]

                realRow = index.row()
                retVal = self._data.loc[realRow, columnName]

                #time.sleep(0.1)

                if columnName == 'accept' and realRow==1:
                    # logger.info(' ======================================= accept column')
                    # print('  index.row():', index.row())
                    # print('  index.column():', index.column())
                    # print('  realRow:', realRow)
                    # print('  columnName:', columnName)
                    # print(f'  self._data.loc[realRow] is:')

                    print(f'  (0) retVal is: "{retVal}"')

                    # comment this and toggle with 'a' does not work
                    print(self._data.loc[realRow])

                    print(f'  (1) retVal is: "{retVal}"')

                    # print(f'  self._data.loc[realRow, columnName] is "{self._data.loc[realRow, columnName]}"')
                    # print('  self._data["accept"]: is')
                    # print(self._data["accept"])
                    # print('  self._data["x"]: is')
                    # print(self._data["x"])
                    # logger.info('  ========================================self._data is:')
                    # print(self._data)
                    # print('')

                    pass

                return str(retVal)
                #return str(retVal)
                #return QtCore.QVariant(retVal)

                # if columnName == 'accept':
                #     logger.info(f'orig retVal: "{retVal}" {type(retVal)}')
                #     print('  self._data:')
                #     print(self._data)

                if isinstance(retVal, np.float64):
                    retVal = float(retVal)
                elif isinstance(retVal, np.int64):
                    retVal = int(retVal)
                elif isinstance(retVal, np.bool_):
                    retVal = str(retVal)
                elif isinstance(retVal, list):
                    retVal = str(retVal)
                elif isinstance(retVal, str) and retVal == 'nan':
                    # logger.info('nan error 1')
                    retVal = ''

                elif isinstance(retVal, float) and math.isnan(retVal):
                    # don't show 'nan' in table
                    logger.info('nan error 2')
                    retVal = ''
                # added march 22
                elif isinstance(retVal, str):
                    logger.info(f'new mar 22 returning {retVal} {type(retVal)}')
                    #retVal = retVal

                if columnName == 'accept':
                    logger.info(f'  returning realRow:{realRow} columnName:{columnName} retVal: "{retVal}"')

                return retVal

            elif role == QtCore.Qt.FontRole:
                #realRow = self._data.index[index.row()]
                realRow = index.row()
                columnName = self._data.columns[index.column()]
                if columnName == 'Symbol':
                    # make symbols larger
                    return QtCore.QVariant(QtGui.QFont('Arial', pointSize=14))
                return QtCore.QVariant()

            elif role == QtCore.Qt.ForegroundRole:
                columnName = self._data.columns[index.column()]
                colorColumns = ['Symbol', 'Shape Type']
                #if columnName == 'Symbol':
                if columnName in colorColumns:
                    # don't get col from index, get from name
                    realRow = self._data.index[index.row()]
                    face_color = self._data.loc[realRow, 'Face Color'] # rgba
                    # TODO: face_color is sometimes a scalar
                    # try:
                    #  _color = (np.array(color.getRgb()) / 255).astype(np.float32)
                    try:
                        #r = int(face_color[0] * 255)
                        #g = int(face_color[1] * 255)
                        #b = int(face_color[2] * 255)
                        #alpha = int(face_color[3] * 255)
                        #theColor = QtCore.QVariant(QtGui.QColor(r, g, b, alpha))
                        # swap AA
                        # napari uses proper order #RRGGBBAA
                        # pyqt uses stange order #AARRGGBB
                        face_color = face_color[0] + face_color[7:9] + face_color[1:7]
                        theColor = QtCore.QVariant(QtGui.QColor(face_color))
                        return theColor
                    except (IndexError) as e:
                        logger.error(f'expecting "Face Color"" as list of rgba, got scalar of {face_color}')
                        return QtCore.QVariant()
                return QtCore.QVariant()

            elif role == QtCore.Qt.BackgroundRole:
                realRow = self._data.index[index.row()]

                columnName = self._data.columns[index.column()]
                if columnName == 'Face Color':
                    realRow = self._data.index[index.row()]
                    face_color = self._data.loc[realRow, 'Face Color'] # rgba
                    face_color = face_color[0] + face_color[7:9] + face_color[1:7]
                    theColor = QtCore.QVariant(QtGui.QColor(face_color))
                    return theColor         
                #elif index.row() % 2 == 0:
                elif realRow % 2 == 0:
                    return QtCore.QVariant(QtGui.QColor('#444444'))
                else:
                    return QtCore.QVariant(QtGui.QColor('#666666'))
        #
        return QtCore.QVariant()

    def setData(self, index, value, role=QtCore.Qt.EditRole):
        """Respond to user/keyboard edits.

            Qt docs: "Sets the role data for the item at index to value."

            True if value is changed. Calls layoutChanged after update.

        Returns:
            (bool): False if value is not different from original value.
        """
        logger.info('THIS DOES NOT GET CAALLED    !!!!!!!!!!!!!')
        if index.isValid():
            if role == QtCore.Qt.EditRole:
                rowIdx = index.row()
                columnIdx = index.column()

                # in general, DO NOT USE iloc, use loc as it is absolute (i,j)
                columnName = self._data.columns[index.column()]
                realRow = index.row()
                v = self._data.loc[realRow, columnName]
                if isinstance(v, np.float64):
                    try:
                        if value == '':
                            value = np.nan
                        else:
                            value = float(value)
                    except (ValueError) as e:
                        logger.info('  No action -->> please enter a number')
                        #self.signalUpdateStatus.emit('Please enter a number')
                        return False

                # set
                self._data.loc[realRow, columnName] = value
                #self._data.iloc[rowIdx, columnIdx] = value

                # emit change
                emitRowDict = self.myGetRowDict(realRow)
                self.signalMyDataChanged.emit(columnName, value, emitRowDict)

                return True

        #
        return QtCore.QVariant()

    def flags(self, index):
        if not index.isValid():
            logger.warning(f'index is not valid: {index}')

        rowIdx = index.row()
        columnIdx = index.column()

        # use to check isEditable
        try:
            columnName = self._data.columns[columnIdx]
        except(IndexError) as e:
            logger.warning(f'IndexError for columnIdx:{columnIdx} len:{len(self._data.columns)}')
            print('  self._data.columns:', self._data.columns)
            raise

        theRet = QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable

        # isEditable = True
        # isCheckbox = False
        # if isEditable:
        #     theRet |= QtCore.Qt.ItemIsEditable
        # if isCheckbox:
        #     #logger.info(f'isCheckbox {columnIdx}')
        #     theRet |= QtCore.Qt.ItemIsUserCheckable

        # flags |= QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsUserCheckable | Qt.ItemIsEnabled

        return theRet

    def headerData(self, col, orientation, role):
        if role == QtCore.Qt.DisplayRole:
            if orientation == QtCore.Qt.Horizontal:
                try:
                    return self._data.columns[col]
                except(IndexError) as e:
                    logger.warning(f'IndexError for col:{col} len:{len(self._data.columns)}, shape:{self._data.shape}')
                    #raise
            elif orientation == QtCore.Qt.Vertical:
                # this is to show pandas 'index' column
                return col

        return QtCore.QVariant()

    def old_sort(self, Ncol, order):
        """Not used when we have a sort model proxy.
        """
        logger.info(f'Ncol:{Ncol} order:{order}')
        self.layoutAboutToBeChanged.emit()
        self._data = self._data.sort_values(self._data.columns[Ncol], ascending=not order)
        self.layoutChanged.emit()

    def myCopyTable(self):
        """Copy model data to clipboard.
        """
        dfCopy = self._data.copy()
        dfCopy.to_clipboard(sep='\t', index=False)
        logger.info(f'Copied table to clipboard with shape: {dfCopy.shape}')
        pprint(dfCopy)

    def myAppendRow(self, dfRow : pd.DataFrame = None):
        """Append one row to internal DataFrame.

        Args:
            dfRow (pd.DataFrame): One row DataFrame to append.
        """
        if dfRow.empty:
            return

        logger.info('')
        # append one empty row
        newRowIdx = len(self._data)
        self.beginInsertRows(QtCore.QModelIndex(), newRowIdx, newRowIdx)

        self._data = pd.concat([self._data, dfRow], ignore_index=True)

        self.endInsertRows()

    def myDeleteRows(self, rows: list):
        """Delete a list of rows from model.

        Args:
            rows (list of int): row indices to delete

        TODO: get update of rows to work
        """
        logger.info('qqqqqqq  wwwwwww')
        # minRow = min(rows)
        # maxRow = max(rows)
        # want this
        # self.beginRemoveRows(QtCore.QModelIndex(), minRow, maxRow)
        self.beginResetModel()

        self._data = self._data.drop(rows)
        self._data = self._data.reset_index(drop=True)

        # want this
        # self.endRemoveRows()
        self.endResetModel()

    def mySetRow(self, rowList: List[int], df: pd.DataFrame, ignoreAccept : bool = False):
        """Set a number of rows from a pandas dataframe.

        Args:
            rowList (list of int): row indices to change
            df (pd.Dataframe): DataFrame with new values for each row in rowList.
                Rows of dataframe correspond to enumeration of rowList list
            ignoreAccept (bool): If True then do not assign 'accept' column
                This is used when user moves a point
                Napari layer does not know about accept
        """

        # logger.info(f'  === (0) received rowList and df, df type is {type(df)}')
        # logger.info(f'                       rowList:{rowList}')
        # logger.info('  df')
        # print(df)

        # print('   before we do anything, self._data is:')
        # print(self._data)

        # print('          Mar 22, HERE IS WERE WE SET DATA AND IT DOES NOT GET UPDATED XXXXXXXXXXXXXX')

        for dfIdx, rowIdx in enumerate(rowList):
            # on switching to v2, was giving error
            # our df has row indices matching the changed rows (same as rowList)

            # ARRRGGGGG, 20230323, without copy this does not work !!!!!
            #oneRow = df.loc[rowIdx].copy()
            oneRow = df.loc[rowIdx]

            # print('(0.0) oneRow is type', type(oneRow), 'and had values of:')
            # print(oneRow)

            #IndexError: iloc cannot enlarge its target object
            try:
                # logger.info(f'  setting rowIdx:{rowIdx} to oneRow from df')
                # print(f'      setting one row to new values oneRow is:')
                # print(oneRow)
                # print(f'=== (1) row {rowIdx} before set is:')
                # print(self._data.loc[rowIdx])

                #
                # set
                #
                #oneRow['accept'] = 999
                #self._data.loc[rowIdx] = oneRow

                # accept column is owned by layer table and is not in lanapri layer

                # oneRow is a pandas.core.series.Series
                if ignoreAccept:
                    _oneRowDict = oneRow.to_dict()
                    for k,v in _oneRowDict.items():
                        if k == 'accept':
                            continue
                        self._data.loc[rowIdx, k] = v
                else:
                    self._data.loc[rowIdx] = oneRow

                # print('  === (2) row after set is:')
                # print(self._data.loc[rowIdx])

                # print('  === (2.5) "accept" col after set self._data["accept"] is')
                # print(self._data['accept'])
                # print(self._data['x'])

                # print('   self._data.columns is:')
                # print(self._data.columns)

                # print('  === (2) self._data after set is:')
                # print(self._data)

            except (ValueError) as e:
                logger.error(e)
                logger.error(f'rowIdx: {rowIdx}')
                logger.error(f'oneRow: {oneRow}')

            startIdx = self.index(rowIdx, 0)  # QModelIndex
            stopIdx = self.index(rowIdx, self._data.shape[1]-1)  # QModelIndex

            #stopIdx = self.index(rowIdx+1, self._data.shape[1]-1)  # QModelIndex

            #print('  startIdx:', startIdx.row(), startIdx.column())
            #print('  stopIdx:', stopIdx.row(), stopIdx.column())

            # logger.info(f'  XXXXXXXX startIdx:{startIdx.row()} {startIdx.column()}')
            # logger.info(f'  XXXXXXXX stopIdx:{stopIdx.row()} {stopIdx.column()}')

            # does nothing
            #self.dataChanged.emit(startIdx, stopIdx)

            # print('           -->> self.dataChanged.emit with:')
            # print('            startIdx:', startIdx.row(), startIdx.column())
            # print('            stopIdx:', stopIdx.row(), stopIdx.column())
            #self.dataChanged.emit(startIdx, stopIdx, [QtCore.Qt.DisplayRole])
            self.dataChanged.emit(startIdx, stopIdx)

            # logger.info('(4) at end')
            # print(self._data)
            # print(self._data['accept'])

        return True

    def old_myGetValue(self, rowIdx, colStr):
        val = None
        if colStr not in self._data.columns:  #  columns is a list
            logger.error(f'Got bad column name: "{colStr}"')
        elif len(self._data)-1 < rowIdx:
            logger.error(f'Got bad row:{rowIdx} from possible {len(self._data)}')
        else:
            val = self._data.loc[rowIdx, colStr]
        return val

    def myGetData(self):
        return self._data

signalMyDataChanged = QtCore.Signal(object, object, object) class-attribute instance-attribute

Emit on user editing a cell.

__init__(data)

Data model for a pandas dataframe.

Parameters:

Name Type Description Default
data dataframe

pandas dataframe

 required
Source code in src/napari_layer_table/_data_model.py 
16
17
18
19
20
21
22
23
24
def __init__(self, data : pd.DataFrame):
    """Data model for a pandas dataframe.

    Args:
        data (pd.dataframe): pandas dataframe
    """
    QtCore.QAbstractTableModel.__init__(self)

    self._data = data

data(index, role=QtCore.Qt.DisplayRole)

QtDocs: "Returns the data stored under the given role for the item referred to by the index."

Parameters

index : PyQt5.QtCore.QModelIndex role :

Source code in src/napari_layer_table/_data_model.py 
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
def data(self, index, role=QtCore.Qt.DisplayRole):
    """
    QtDocs: "Returns the data stored under the given role for the item referred to by the index."

    Parameters
    ----------
    index : PyQt5.QtCore.QModelIndex
    role : 
    """
    #logger.info(f'index:{index.row()} {index.column()} {index}')
    if index.isValid():
        if role == QtCore.Qt.ToolTipRole:
            # no tooltips here
            pass
        #elif role in [QtCore.Qt.DisplayRole, QtCore.Qt.EditRole]:
        elif role in [QtCore.Qt.DisplayRole]:
            columnName = self._data.columns[index.column()]

            realRow = index.row()
            retVal = self._data.loc[realRow, columnName]

            #time.sleep(0.1)

            if columnName == 'accept' and realRow==1:
                # logger.info(' ======================================= accept column')
                # print('  index.row():', index.row())
                # print('  index.column():', index.column())
                # print('  realRow:', realRow)
                # print('  columnName:', columnName)
                # print(f'  self._data.loc[realRow] is:')

                print(f'  (0) retVal is: "{retVal}"')

                # comment this and toggle with 'a' does not work
                print(self._data.loc[realRow])

                print(f'  (1) retVal is: "{retVal}"')

                # print(f'  self._data.loc[realRow, columnName] is "{self._data.loc[realRow, columnName]}"')
                # print('  self._data["accept"]: is')
                # print(self._data["accept"])
                # print('  self._data["x"]: is')
                # print(self._data["x"])
                # logger.info('  ========================================self._data is:')
                # print(self._data)
                # print('')

                pass

            return str(retVal)
            #return str(retVal)
            #return QtCore.QVariant(retVal)

            # if columnName == 'accept':
            #     logger.info(f'orig retVal: "{retVal}" {type(retVal)}')
            #     print('  self._data:')
            #     print(self._data)

            if isinstance(retVal, np.float64):
                retVal = float(retVal)
            elif isinstance(retVal, np.int64):
                retVal = int(retVal)
            elif isinstance(retVal, np.bool_):
                retVal = str(retVal)
            elif isinstance(retVal, list):
                retVal = str(retVal)
            elif isinstance(retVal, str) and retVal == 'nan':
                # logger.info('nan error 1')
                retVal = ''

            elif isinstance(retVal, float) and math.isnan(retVal):
                # don't show 'nan' in table
                logger.info('nan error 2')
                retVal = ''
            # added march 22
            elif isinstance(retVal, str):
                logger.info(f'new mar 22 returning {retVal} {type(retVal)}')
                #retVal = retVal

            if columnName == 'accept':
                logger.info(f'  returning realRow:{realRow} columnName:{columnName} retVal: "{retVal}"')

            return retVal

        elif role == QtCore.Qt.FontRole:
            #realRow = self._data.index[index.row()]
            realRow = index.row()
            columnName = self._data.columns[index.column()]
            if columnName == 'Symbol':
                # make symbols larger
                return QtCore.QVariant(QtGui.QFont('Arial', pointSize=14))
            return QtCore.QVariant()

        elif role == QtCore.Qt.ForegroundRole:
            columnName = self._data.columns[index.column()]
            colorColumns = ['Symbol', 'Shape Type']
            #if columnName == 'Symbol':
            if columnName in colorColumns:
                # don't get col from index, get from name
                realRow = self._data.index[index.row()]
                face_color = self._data.loc[realRow, 'Face Color'] # rgba
                # TODO: face_color is sometimes a scalar
                # try:
                #  _color = (np.array(color.getRgb()) / 255).astype(np.float32)
                try:
                    #r = int(face_color[0] * 255)
                    #g = int(face_color[1] * 255)
                    #b = int(face_color[2] * 255)
                    #alpha = int(face_color[3] * 255)
                    #theColor = QtCore.QVariant(QtGui.QColor(r, g, b, alpha))
                    # swap AA
                    # napari uses proper order #RRGGBBAA
                    # pyqt uses stange order #AARRGGBB
                    face_color = face_color[0] + face_color[7:9] + face_color[1:7]
                    theColor = QtCore.QVariant(QtGui.QColor(face_color))
                    return theColor
                except (IndexError) as e:
                    logger.error(f'expecting "Face Color"" as list of rgba, got scalar of {face_color}')
                    return QtCore.QVariant()
            return QtCore.QVariant()

        elif role == QtCore.Qt.BackgroundRole:
            realRow = self._data.index[index.row()]

            columnName = self._data.columns[index.column()]
            if columnName == 'Face Color':
                realRow = self._data.index[index.row()]
                face_color = self._data.loc[realRow, 'Face Color'] # rgba
                face_color = face_color[0] + face_color[7:9] + face_color[1:7]
                theColor = QtCore.QVariant(QtGui.QColor(face_color))
                return theColor         
            #elif index.row() % 2 == 0:
            elif realRow % 2 == 0:
                return QtCore.QVariant(QtGui.QColor('#444444'))
            else:
                return QtCore.QVariant(QtGui.QColor('#666666'))
    #
    return QtCore.QVariant()

myAppendRow(dfRow=None)

Append one row to internal DataFrame.

Parameters:

Name Type Description Default
dfRow DataFrame

One row DataFrame to append.

 None
Source code in src/napari_layer_table/_data_model.py 
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
def myAppendRow(self, dfRow : pd.DataFrame = None):
    """Append one row to internal DataFrame.

    Args:
        dfRow (pd.DataFrame): One row DataFrame to append.
    """
    if dfRow.empty:
        return

    logger.info('')
    # append one empty row
    newRowIdx = len(self._data)
    self.beginInsertRows(QtCore.QModelIndex(), newRowIdx, newRowIdx)

    self._data = pd.concat([self._data, dfRow], ignore_index=True)

    self.endInsertRows()

myCopyTable()

Copy model data to clipboard.

Source code in src/napari_layer_table/_data_model.py 
266
267
268
269
270
271
272
def myCopyTable(self):
    """Copy model data to clipboard.
    """
    dfCopy = self._data.copy()
    dfCopy.to_clipboard(sep='\t', index=False)
    logger.info(f'Copied table to clipboard with shape: {dfCopy.shape}')
    pprint(dfCopy)

myDeleteRows(rows)

Delete a list of rows from model.

Parameters:

Name Type Description Default
rows list of int

row indices to delete

 required

TODO: get update of rows to work

Source code in src/napari_layer_table/_data_model.py 
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
def myDeleteRows(self, rows: list):
    """Delete a list of rows from model.

    Args:
        rows (list of int): row indices to delete

    TODO: get update of rows to work
    """
    logger.info('qqqqqqq  wwwwwww')
    # minRow = min(rows)
    # maxRow = max(rows)
    # want this
    # self.beginRemoveRows(QtCore.QModelIndex(), minRow, maxRow)
    self.beginResetModel()

    self._data = self._data.drop(rows)
    self._data = self._data.reset_index(drop=True)

    # want this
    # self.endRemoveRows()
    self.endResetModel()

mySetRow(rowList, df, ignoreAccept=False)

Set a number of rows from a pandas dataframe.

Parameters:

Name Type Description Default
rowList list of int

row indices to change

 required
df Dataframe

DataFrame with new values for each row in rowList. Rows of dataframe correspond to enumeration of rowList list

 required
ignoreAccept bool

If True then do not assign 'accept' column This is used when user moves a point Napari layer does not know about accept

 False
Source code in src/napari_layer_table/_data_model.py 
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
def mySetRow(self, rowList: List[int], df: pd.DataFrame, ignoreAccept : bool = False):
    """Set a number of rows from a pandas dataframe.

    Args:
        rowList (list of int): row indices to change
        df (pd.Dataframe): DataFrame with new values for each row in rowList.
            Rows of dataframe correspond to enumeration of rowList list
        ignoreAccept (bool): If True then do not assign 'accept' column
            This is used when user moves a point
            Napari layer does not know about accept
    """

    # logger.info(f'  === (0) received rowList and df, df type is {type(df)}')
    # logger.info(f'                       rowList:{rowList}')
    # logger.info('  df')
    # print(df)

    # print('   before we do anything, self._data is:')
    # print(self._data)

    # print('          Mar 22, HERE IS WERE WE SET DATA AND IT DOES NOT GET UPDATED XXXXXXXXXXXXXX')

    for dfIdx, rowIdx in enumerate(rowList):
        # on switching to v2, was giving error
        # our df has row indices matching the changed rows (same as rowList)

        # ARRRGGGGG, 20230323, without copy this does not work !!!!!
        #oneRow = df.loc[rowIdx].copy()
        oneRow = df.loc[rowIdx]

        # print('(0.0) oneRow is type', type(oneRow), 'and had values of:')
        # print(oneRow)

        #IndexError: iloc cannot enlarge its target object
        try:
            # logger.info(f'  setting rowIdx:{rowIdx} to oneRow from df')
            # print(f'      setting one row to new values oneRow is:')
            # print(oneRow)
            # print(f'=== (1) row {rowIdx} before set is:')
            # print(self._data.loc[rowIdx])

            #
            # set
            #
            #oneRow['accept'] = 999
            #self._data.loc[rowIdx] = oneRow

            # accept column is owned by layer table and is not in lanapri layer

            # oneRow is a pandas.core.series.Series
            if ignoreAccept:
                _oneRowDict = oneRow.to_dict()
                for k,v in _oneRowDict.items():
                    if k == 'accept':
                        continue
                    self._data.loc[rowIdx, k] = v
            else:
                self._data.loc[rowIdx] = oneRow

            # print('  === (2) row after set is:')
            # print(self._data.loc[rowIdx])

            # print('  === (2.5) "accept" col after set self._data["accept"] is')
            # print(self._data['accept'])
            # print(self._data['x'])

            # print('   self._data.columns is:')
            # print(self._data.columns)

            # print('  === (2) self._data after set is:')
            # print(self._data)

        except (ValueError) as e:
            logger.error(e)
            logger.error(f'rowIdx: {rowIdx}')
            logger.error(f'oneRow: {oneRow}')

        startIdx = self.index(rowIdx, 0)  # QModelIndex
        stopIdx = self.index(rowIdx, self._data.shape[1]-1)  # QModelIndex

        #stopIdx = self.index(rowIdx+1, self._data.shape[1]-1)  # QModelIndex

        #print('  startIdx:', startIdx.row(), startIdx.column())
        #print('  stopIdx:', stopIdx.row(), stopIdx.column())

        # logger.info(f'  XXXXXXXX startIdx:{startIdx.row()} {startIdx.column()}')
        # logger.info(f'  XXXXXXXX stopIdx:{stopIdx.row()} {stopIdx.column()}')

        # does nothing
        #self.dataChanged.emit(startIdx, stopIdx)

        # print('           -->> self.dataChanged.emit with:')
        # print('            startIdx:', startIdx.row(), startIdx.column())
        # print('            stopIdx:', stopIdx.row(), stopIdx.column())
        #self.dataChanged.emit(startIdx, stopIdx, [QtCore.Qt.DisplayRole])
        self.dataChanged.emit(startIdx, stopIdx)

        # logger.info('(4) at end')
        # print(self._data)
        # print(self._data['accept'])

    return True

old_sort(Ncol, order)

Not used when we have a sort model proxy.

Source code in src/napari_layer_table/_data_model.py 
258
259
260
261
262
263
264
def old_sort(self, Ncol, order):
    """Not used when we have a sort model proxy.
    """
    logger.info(f'Ncol:{Ncol} order:{order}')
    self.layoutAboutToBeChanged.emit()
    self._data = self._data.sort_values(self._data.columns[Ncol], ascending=not order)
    self.layoutChanged.emit()

setData(index, value, role=QtCore.Qt.EditRole)

Respond to user/keyboard edits.

Qt docs: "Sets the role data for the item at index to value."

True if value is changed. Calls layoutChanged after update.

Returns:

Type Description
bool

False if value is not different from original value.
Source code in src/napari_layer_table/_data_model.py 
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
def setData(self, index, value, role=QtCore.Qt.EditRole):
    """Respond to user/keyboard edits.

        Qt docs: "Sets the role data for the item at index to value."

        True if value is changed. Calls layoutChanged after update.

    Returns:
        (bool): False if value is not different from original value.
    """
    logger.info('THIS DOES NOT GET CAALLED    !!!!!!!!!!!!!')
    if index.isValid():
        if role == QtCore.Qt.EditRole:
            rowIdx = index.row()
            columnIdx = index.column()

            # in general, DO NOT USE iloc, use loc as it is absolute (i,j)
            columnName = self._data.columns[index.column()]
            realRow = index.row()
            v = self._data.loc[realRow, columnName]
            if isinstance(v, np.float64):
                try:
                    if value == '':
                        value = np.nan
                    else:
                        value = float(value)
                except (ValueError) as e:
                    logger.info('  No action -->> please enter a number')
                    #self.signalUpdateStatus.emit('Please enter a number')
                    return False

            # set
            self._data.loc[realRow, columnName] = value
            #self._data.iloc[rowIdx, columnIdx] = value

            # emit change
            emitRowDict = self.myGetRowDict(realRow)
            self.signalMyDataChanged.emit(columnName, value, emitRowDict)

            return True

    #
    return QtCore.QVariant()