class PyQtGraphDataPlot(QWidget): limits_changed = Signal() def __init__(self, parent=None): super(PyQtGraphDataPlot, self).__init__(parent) self._plot_widget = PlotWidget() self._plot_widget.getPlotItem().addLegend() self._plot_widget.setBackground((255, 255, 255)) self._plot_widget.setXRange(0, 10, padding=0) vbox = QVBoxLayout() vbox.addWidget(self._plot_widget) self.setLayout(vbox) self._plot_widget.getPlotItem().sigRangeChanged.connect( self.limits_changed) self._curves = {} self._current_vline = None def add_curve(self, curve_id, curve_name, curve_color=QColor(Qt.blue), markers_on=False): pen = mkPen(curve_color, width=1) symbol = "o" symbolPen = mkPen(QColor(Qt.black)) symbolBrush = mkBrush(curve_color) # this adds the item to the plot and legend if markers_on: plot = self._plot_widget.plot(name=curve_name, pen=pen, symbol=symbol, symbolPen=symbolPen, symbolBrush=symbolBrush, symbolSize=4) else: plot = self._plot_widget.plot(name=curve_name, pen=pen) self._curves[curve_id] = plot def remove_curve(self, curve_id): curve_id = str(curve_id) if curve_id in self._curves: self._plot_widget.removeItem(self._curves[curve_id]) del self._curves[curve_id] self._update_legend() def _update_legend(self): # clear and rebuild legend (there is no remove item method for the legend...) self._plot_widget.clear() self._plot_widget.getPlotItem().legend.items = [] for curve in self._curves.values(): self._plot_widget.addItem(curve) if self._current_vline: self._plot_widget.addItem(self._current_vline) def redraw(self): pass def set_values(self, curve_id, data_x, data_y): curve = self._curves[curve_id] curve.setData(data_x, data_y) def vline(self, x, color): if self._current_vline: self._plot_widget.removeItem(self._current_vline) self._current_vline = self._plot_widget.addLine(x=x, pen=color) def set_xlim(self, limits): # TODO: this doesn't seem to handle fast updates well self._plot_widget.setXRange(limits[0], limits[1], padding=0) def set_ylim(self, limits): self._plot_widget.setYRange(limits[0], limits[1], padding=0) def get_xlim(self): x_range, _ = self._plot_widget.viewRange() return x_range def get_ylim(self): _, y_range = self._plot_widget.viewRange() return y_range
class PyQtGraphDataPlot(QWidget): limits_changed = Signal() def __init__(self, parent=None): super(PyQtGraphDataPlot, self).__init__(parent) self._plot_widget = PlotWidget() self._plot_widget.getPlotItem().addLegend() self._plot_widget.setBackground((255, 255, 255)) self._plot_widget.setXRange(0, 10, padding=0) vbox = QVBoxLayout() vbox.addWidget(self._plot_widget) self.setLayout(vbox) self._plot_widget.getPlotItem().sigRangeChanged.connect( self.limits_changed) self.bins = 10 self.window = 100 self._curves = {} self._current_vline = None def add_curve(self, curve_id, curve_name, curve_color=QColor(Qt.blue), markers_on=False): pen = mkPen(curve_color, width=1) # this adds the item to the plot and legend plot = self._plot_widget.plot(stepMode=True, fillLevel=0, brush=(0, 0, 255, 150)) self._curves[curve_id] = plot def remove_curve(self, curve_id): curve_id = str(curve_id) if curve_id in self._curves: self._plot_widget.removeItem(self._curves[curve_id]) del self._curves[curve_id] self._update_legend() def _update_legend(self): # clear and rebuild legend (there is no remove item method for the legend...) self._plot_widget.clear() self._plot_widget.getPlotItem().legend.items = [] for curve in self._curves.values(): self._plot_widget.addItem(curve) if self._current_vline: self._plot_widget.addItem(self._current_vline) def redraw(self): pass def set_values(self, curve_id, data_x, data_y): curve = self._curves[curve_id] if len(data_y) > 0: y, x = numpy.histogram(data_y[-self.window:], self.bins) curve.setData(x, y) else: curve.clear() self._plot_widget.autoRange() def vline(self, x, color): if self._current_vline: self._plot_widget.removeItem(self._current_vline) self._current_vline = self._plot_widget.addLine(x=x, pen=color) def set_xlim(self, limits): # TODO: this doesn't seem to handle fast updates well self._plot_widget.setXRange(limits[0], limits[1], padding=0) def set_ylim(self, limits): self._plot_widget.setYRange(limits[0], limits[1], padding=0) def get_xlim(self): x_range, _ = self._plot_widget.viewRange() return x_range def get_ylim(self): _, y_range = self._plot_widget.viewRange() return y_range
class PyQtGraphDataPlot(QWidget): limits_changed = Signal() def __init__(self, parent=None): super(PyQtGraphDataPlot, self).__init__(parent) self._plot_widget = PlotWidget() self._plot_widget.getPlotItem().addLegend() self._plot_widget.setBackground((255, 255, 255)) self._plot_widget.setXRange(0, 10, padding=0) vbox = QVBoxLayout() vbox.addWidget(self._plot_widget) self.setLayout(vbox) self._plot_widget.getPlotItem().sigRangeChanged.connect(self.limits_changed) self._curves = {} self._current_vline = None def add_curve(self, curve_id, curve_name, curve_color=QColor(Qt.blue), markers_on=False): pen = mkPen(curve_color, width=1) symbol = "o" symbolPen = mkPen(QColor(Qt.black)) symbolBrush = mkBrush(curve_color) # this adds the item to the plot and legend if markers_on: plot = self._plot_widget.plot(name=curve_name, pen=pen, symbol=symbol, symbolPen=symbolPen, symbolBrush=symbolBrush, symbolSize=4) else: plot = self._plot_widget.plot(name=curve_name, pen=pen) self._curves[curve_id] = plot def remove_curve(self, curve_id): curve_id = str(curve_id) if curve_id in self._curves: self._plot_widget.removeItem(self._curves[curve_id]) del self._curves[curve_id] self._update_legend() def _update_legend(self): # clear and rebuild legend (there is no remove item method for the legend...) self._plot_widget.clear() self._plot_widget.getPlotItem().legend.items = [] for curve in self._curves.values(): self._plot_widget.addItem(curve) if self._current_vline: self._plot_widget.addItem(self._current_vline) def redraw(self): pass def set_values(self, curve_id, data_x, data_y): curve = self._curves[curve_id] curve.setData(data_x, data_y) def vline(self, x, color): if self._current_vline: self._plot_widget.removeItem(self._current_vline) self._current_vline = self._plot_widget.addLine(x=x, pen=color) def set_xlim(self, limits): # TODO: this doesn't seem to handle fast updates well self._plot_widget.setXRange(limits[0], limits[1], padding=0) def set_ylim(self, limits): self._plot_widget.setYRange(limits[0], limits[1], padding=0) def get_xlim(self): x_range, _ = self._plot_widget.viewRange() return x_range def get_ylim(self): _, y_range = self._plot_widget.viewRange() return y_range