def axis_view(orientation): ax = AxisItem(orientation=orientation, maxTickLength=7) ax.mousePressed.connect(self._activate_cut_line) ax.mouseMoved.connect(self._activate_cut_line) ax.mouseReleased.connect(self._activate_cut_line) ax.setRange(1.0, 0.0) return ax
def __setup(self): # Setup the subwidgets/groups/layout smax = max( (np.nanmax(g.scores) for g in self.__groups if g.scores.size), default=1) smax = 1 if np.isnan(smax) else smax smin = min( (np.nanmin(g.scores) for g in self.__groups if g.scores.size), default=-1) smin = -1 if np.isnan(smin) else smin smin = min(smin, 0) font = self.font() font.setPixelSize(self.__barHeight) foreground = self.palette().brush(QPalette.WindowText) ax = AxisItem(parent=self, orientation="top", maxTickLength=7) ax.setRange(smin, smax) self.__topScale = ax layout = self.__layout assert layout is self.layout() layout.addItem(ax, 0, 2) for i, group in enumerate(self.__groups): silhouettegroup = BarPlotItem(parent=self) silhouettegroup.setBrush(QBrush(QColor(*group.color))) silhouettegroup.setPen(self.__pen) silhouettegroup.setDataRange(smin, smax) silhouettegroup.setPlotData(group.scores) silhouettegroup.setPreferredBarSize(self.__barHeight) silhouettegroup.setData(0, group.indices) layout.addItem(silhouettegroup, i + 1, 2) if group.label: layout.addItem(Line(orientation=Qt.Vertical), i + 1, 1) text = group.label if group.scores.size: text += f" ({np.mean(group.scores):.3f})" label = QGraphicsSimpleTextItem(text, self) label.setBrush(foreground) label.setPen(QPen(Qt.NoPen)) label.setRotation(-90) item = SimpleLayoutItem( label, anchor=(0., 1.0), anchorItem=(0., 0.), ) item.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) layout.addItem(item, i + 1, 0, Qt.AlignCenter) textlist = _SilhouettePlotTextListWidget(self, font=font, elideMode=Qt.ElideRight, alignment=Qt.AlignLeft | Qt.AlignVCenter) textlist.setMaximumWidth(750) textlist.setFlag(TextListWidget.ItemClipsChildrenToShape, False) sp = textlist.sizePolicy() sp.setVerticalPolicy(QSizePolicy.Ignored) textlist.setSizePolicy(sp) if group.rownames is not None: textlist.setItems(group.items) textlist.setVisible(self.__rowNamesVisible) else: textlist.setVisible(False) layout.addItem(textlist, i + 1, 3) ax = AxisItem(parent=self, orientation="bottom", maxTickLength=7) ax.setRange(smin, smax) self.__bottomScale = ax layout.addItem(ax, len(self.__groups) + 1, 2)
class ViolinPlot(QGraphicsWidget): LABEL_COLUMN, VIOLIN_COLUMN, LEGEND_COLUMN = range(3) VIOLIN_COLUMN_WIDTH, OFFSET = 300, 80 MAX_N_ITEMS = 100 selection_cleared = Signal() selection_changed = Signal(float, float, str) resized = Signal() def __init__(self): super().__init__() self.__violin_column_width = self.VIOLIN_COLUMN_WIDTH # type: int self.__range = None # type: Optional[Tuple[float, float]] self.__violin_items = [] # type: List[ViolinItem] self.__variable_items = [] # type: List[VariableItem] self.__bottom_axis = AxisItem(parent=self, orientation="bottom", maxTickLength=7, pen=QPen(Qt.black)) self.__bottom_axis.setLabel("Impact on model output") self.__vertical_line = QGraphicsLineItem(self.__bottom_axis) self.__vertical_line.setPen(QPen(Qt.gray)) self.__legend = Legend(self) self.__layout = QGraphicsGridLayout() self.__layout.addItem(self.__legend, 0, ViolinPlot.LEGEND_COLUMN) self.__layout.setVerticalSpacing(0) self.setLayout(self.__layout) self.parameter_setter = ParameterSetter(self) @property def violin_column_width(self): return self.__violin_column_width @violin_column_width.setter def violin_column_width(self, view_width: int): j = ViolinPlot.LABEL_COLUMN w = max([self.__layout.itemAt(i, j).item.boundingRect().width() for i in range(len(self.__violin_items))] + [0]) width = view_width - self.legend.sizeHint().width() - self.OFFSET - w self.__violin_column_width = max(self.VIOLIN_COLUMN_WIDTH, width) @property def bottom_axis(self): return self.__bottom_axis @property def labels(self): return self.__variable_items @property def legend(self): return self.__legend def set_data(self, x: np.ndarray, colors: np.ndarray, names: List[str], n_attrs: float, view_width: int): self.violin_column_width = view_width abs_max = np.max(np.abs(x)) * 1.05 self.__range = (-abs_max, abs_max) self._set_violin_items(x, colors, names) self._set_labels(names) self._set_bottom_axis() self.set_n_visible(n_attrs) def set_n_visible(self, n: int): for i in range(len(self.__violin_items)): violin_item = self.__layout.itemAt(i, ViolinPlot.VIOLIN_COLUMN) violin_item.setVisible(i < n) text_item = self.__layout.itemAt(i, ViolinPlot.LABEL_COLUMN).item text_item.setVisible(i < n) self.set_vertical_line() def rescale(self, view_width: int): self.violin_column_width = view_width with temp_seed(0): for item in self.__violin_items: item.rescale(self.violin_column_width) self.__bottom_axis.setWidth(self.violin_column_width) x = self.violin_column_width / 2 self.__vertical_line.setLine(x, 0, x, self.__vertical_line.line().y2()) def show_legend(self, show: bool): self.__legend.setVisible(show) self.__bottom_axis.setWidth(self.violin_column_width) x = self.violin_column_width / 2 self.__vertical_line.setLine(x, 0, x, self.__vertical_line.line().y2()) def _set_violin_items(self, x: np.ndarray, colors: np.ndarray, labels: List[str]): with temp_seed(0): for i in range(x.shape[1]): item = ViolinItem(self, labels[i], self.__range, self.violin_column_width) item.set_data(x[:, i], colors[:, i]) item.selection_changed.connect(self.select) self.__violin_items.append(item) self.__layout.addItem(item, i, ViolinPlot.VIOLIN_COLUMN) if i == self.MAX_N_ITEMS: break def _set_labels(self, labels: List[str]): for i, (label, _) in enumerate(zip(labels, self.__violin_items)): text = VariableItem(self, label) item = SimpleLayoutItem(text) item.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) self.__layout.addItem(item, i, ViolinPlot.LABEL_COLUMN, Qt.AlignRight | Qt.AlignVCenter) self.__variable_items.append(item) def _set_bottom_axis(self): self.__bottom_axis.setRange(*self.__range) self.__layout.addItem(self.__bottom_axis, len(self.__violin_items), ViolinPlot.VIOLIN_COLUMN) def set_vertical_line(self): x = self.violin_column_width / 2 height = 0 for i in range(len(self.__violin_items)): violin_item = self.__layout.itemAt(i, ViolinPlot.VIOLIN_COLUMN) text_item = self.__layout.itemAt(i, ViolinPlot.LABEL_COLUMN).item if violin_item.isVisible(): height += max(text_item.boundingRect().height(), violin_item.preferredSize().height()) self.__vertical_line.setLine(x, 0, x, -height) def deselect(self): self.selection_cleared.emit() def select(self, *args): self.selection_changed.emit(*args) def select_from_settings(self, x1: float, x2: float, attr_name: str): point_r_diff = 2 * self.__range[1] / (self.violin_column_width / 2) for item in self.__violin_items: if item.attr_name == attr_name: item.add_selection_rect(x1 - point_r_diff, x2 + point_r_diff) break self.select(x1, x2, attr_name) def apply_visual_settings(self, settings: Dict): for key, value in settings.items(): self.parameter_setter.set_parameter(key, value)
class FeaturesPlot(QGraphicsWidget): BOTTOM_AXIS_LABEL = "Feature Importance" LABEL_COLUMN, ITEM_COLUMN = range(2) ITEM_COLUMN_WIDTH, OFFSET = 300, 80 selection_cleared = Signal() selection_changed = Signal(object) resized = Signal() def __init__(self): super().__init__() self._item_column_width = self.ITEM_COLUMN_WIDTH self._range: Optional[Tuple[float, float]] = None self._items: List[FeatureItem] = [] self._variable_items: List[VariableItem] = [] self._bottom_axis = AxisItem(parent=self, orientation="bottom", maxTickLength=7, pen=QPen(Qt.black)) self._bottom_axis.setLabel(self.BOTTOM_AXIS_LABEL) self._vertical_line = QGraphicsLineItem(self._bottom_axis) self._vertical_line.setPen(QPen(Qt.gray)) self._layout = QGraphicsGridLayout() self._layout.setVerticalSpacing(0) self.setLayout(self._layout) self.parameter_setter = BaseParameterSetter(self) @property def item_column_width(self) -> int: return self._item_column_width @item_column_width.setter def item_column_width(self, view_width: int): j = FeaturesPlot.LABEL_COLUMN w = max([ self._layout.itemAt(i, j).item.boundingRect().width() for i in range(len(self._items)) ] + [0]) width = view_width - self.OFFSET - w self._item_column_width = max(self.ITEM_COLUMN_WIDTH, width) @property def x0_scaled(self) -> float: min_max = self._range[1] - self._range[0] return -self._range[0] * self.item_column_width / min_max @property def bottom_axis(self) -> AxisItem: return self._bottom_axis @property def labels(self) -> List[VariableItem]: return self._variable_items def set_data(self, x: np.ndarray, names: List[str], n_attrs: int, view_width: int, *plot_args): self.item_column_width = view_width self._set_range(x, *plot_args) self._set_items(x, names, *plot_args) self._set_labels(names) self._set_bottom_axis() self.set_n_visible(n_attrs) def _set_range(self, *_): raise NotImplementedError def _set_items(self, *_): raise NotImplementedError def set_n_visible(self, n: int): for i in range(len(self._items)): item = self._layout.itemAt(i, FeaturesPlot.ITEM_COLUMN) item.setVisible(i < n) text_item = self._layout.itemAt(i, FeaturesPlot.LABEL_COLUMN).item text_item.setVisible(i < n) self.set_vertical_line() def rescale(self, view_width: int): self.item_column_width = view_width for item in self._items: item.rescale(self.item_column_width) self._bottom_axis.setWidth(self.item_column_width) x = self.x0_scaled self._vertical_line.setLine(x, 0, x, self._vertical_line.line().y2()) self.updateGeometry() def set_height(self, height: float): for i in range(len(self._items)): item = self._layout.itemAt(i, FeaturesPlot.ITEM_COLUMN) item.set_height(height) self.set_vertical_line() self.updateGeometry() def _set_labels(self, labels: List[str]): for i, (label, _) in enumerate(zip(labels, self._items)): text = VariableItem(self, label) item = SimpleLayoutItem(text) item.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) self._layout.addItem(item, i, FeaturesPlot.LABEL_COLUMN, Qt.AlignRight | Qt.AlignVCenter) self._variable_items.append(item) def _set_bottom_axis(self): self._bottom_axis.setRange(*self._range) self._layout.addItem(self._bottom_axis, len(self._items), FeaturesPlot.ITEM_COLUMN) def set_vertical_line(self): height = 0 for i in range(len(self._items)): item = self._layout.itemAt(i, FeaturesPlot.ITEM_COLUMN) text_item = self._layout.itemAt(i, FeaturesPlot.LABEL_COLUMN).item if item.isVisible(): height += max(text_item.boundingRect().height(), item.preferredSize().height()) self._vertical_line.setLine(self.x0_scaled, 0, self.x0_scaled, -height) def deselect(self): self.selection_cleared.emit() def select(self, *args): self.selection_changed.emit(*args) def select_from_settings(self, *_): raise NotImplementedError def apply_visual_settings(self, settings: Dict): for key, value in settings.items(): self.parameter_setter.set_parameter(key, value)