def _style_cells(self):
"""
Style all cells.
"""
if self.circles:
self.setItemDelegate(CircleItemDelegate(Qt.white))
else:
self.setItemDelegate(BorderedItemDelegate(Qt.white))
item = self._item(0, 2)
item.setData(self.headerh, Qt.DisplayRole)
item.setTextAlignment(Qt.AlignCenter)
item.setFlags(Qt.NoItemFlags)
self._set_item(0, 2, item)
item = self._item(2, 0)
item.setData(self.headerv, Qt.DisplayRole)
item.setTextAlignment(Qt.AlignHCenter | Qt.AlignBottom)
item.setFlags(Qt.NoItemFlags)
self.setItemDelegateForColumn(0, gui.VerticalItemDelegate())
self._set_item(2, 0, item)
self.setSpan(0, 2, 1, len(self.classesh) + 1)
self.setSpan(2, 0, len(self.classesv) + 1, 1)
for i in (0, 1):
for j in (0, 1):
item = self._item(i, j)
item.setFlags(Qt.NoItemFlags)
self._set_item(i, j, item)
def __set_vertical_title(self, titlev):
item = QStandardItem()
item.setData(titlev, Qt.DisplayRole)
item.setTextAlignment(Qt.AlignHCenter | Qt.AlignBottom)
self.setItemDelegateForColumn(0, gui.VerticalItemDelegate(extend=True))
self.table_model.setItem(self._n_leading_rows, 0, item)
row_span = self._n_classesv * self._n_agg_func + 1
self.setSpan(self._n_leading_rows, 0, row_span, 1)
def _init_table(self, nclasses):
item = self._item(0, 2)
item.setData("Predicted", Qt.DisplayRole)
item.setTextAlignment(Qt.AlignCenter)
item.setFlags(Qt.NoItemFlags)
self._set_item(0, 2, item)
item = self._item(2, 0)
item.setData("Actual", Qt.DisplayRole)
item.setTextAlignment(Qt.AlignHCenter | Qt.AlignBottom)
item.setFlags(Qt.NoItemFlags)
self.tableview.setItemDelegateForColumn(0, gui.VerticalItemDelegate())
self._set_item(2, 0, item)
self.tableview.setSpan(0, 2, 1, nclasses)
self.tableview.setSpan(2, 0, nclasses, 1)
font = self.tablemodel.invisibleRootItem().font()
bold_font = QFont(font)
bold_font.setBold(True)
for i in (0, 1):
for j in (0, 1):
item = self._item(i, j)
item.setFlags(Qt.NoItemFlags)
self._set_item(i, j, item)
for p, label in enumerate(self.headers):
for i, j in ((1, p + 2), (p + 2, 1)):
item = self._item(i, j)
item.setData(label, Qt.DisplayRole)
item.setFont(bold_font)
item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter)
item.setFlags(Qt.ItemIsEnabled)
if p < len(self.headers) - 1:
item.setData("br"[j == 1], BorderRole)
item.setData(QColor(192, 192, 192), BorderColorRole)
self._set_item(i, j, item)
hor_header = self.tableview.horizontalHeader()
if len(' '.join(self.headers)) < 120:
hor_header.setSectionResizeMode(QHeaderView.ResizeToContents)
else:
hor_header.setDefaultSectionSize(60)
self.tablemodel.setRowCount(nclasses + 3)
self.tablemodel.setColumnCount(nclasses + 3)
def set_results(self, results):
"""Set the input results."""
self.clear()
self.warning([0, 1])
data = None
if results is not None:
if results.data is not None:
data = results.data
if data is not None and not data.domain.has_discrete_class:
data = None
results = None
self.warning(
0, "Confusion Matrix cannot be used for regression results.")
self.results = results
self.data = data
if data is not None:
class_values = data.domain.class_var.values
elif results is not None:
raise NotImplementedError
if results is not None:
nmodels, ntests = results.predicted.shape
self.headers = class_values + \
[unicodedata.lookup("N-ARY SUMMATION")]
# NOTE: The 'learner_names' is set in 'Test Learners' widget.
if hasattr(results, "learner_names"):
self.learners = results.learner_names
else:
self.learners = [
"Learner #%i" % (i + 1) for i in range(nmodels)
]
item = self._item(0, 2)
item.setData("Predicted", Qt.DisplayRole)
item.setTextAlignment(Qt.AlignCenter)
item.setFlags(Qt.NoItemFlags)
self._set_item(0, 2, item)
item = self._item(2, 0)
item.setData("Actual", Qt.DisplayRole)
item.setTextAlignment(Qt.AlignHCenter | Qt.AlignBottom)
item.setFlags(Qt.NoItemFlags)
self.tableview.setItemDelegateForColumn(0,
gui.VerticalItemDelegate())
self._set_item(2, 0, item)
self.tableview.setSpan(0, 2, 1, len(class_values))
self.tableview.setSpan(2, 0, len(class_values), 1)
for i in (0, 1):
for j in (0, 1):
item = self._item(i, j)
item.setFlags(Qt.NoItemFlags)
self._set_item(i, j, item)
for p, label in enumerate(self.headers):
for i, j in ((1, p + 2), (p + 2, 1)):
item = self._item(i, j)
item.setData(label, Qt.DisplayRole)
item.setData(QBrush(QColor(208, 208, 208)),
Qt.BackgroundColorRole)
item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter)
item.setFlags(Qt.ItemIsEnabled)
self._set_item(i, j, item)
hor_header = self.tableview.horizontalHeader()
if len(' '.join(self.headers)) < 120:
hor_header.setResizeMode(QHeaderView.ResizeToContents)
else:
hor_header.setDefaultSectionSize(60)
self.tablemodel.setRowCount(len(class_values) + 3)
self.tablemodel.setColumnCount(len(class_values) + 3)
self.selected_learner = [0]
self._update()
