本文整理汇总了Python中pyqtgraph.PlotWidget.addLine方法的典型用法代码示例。如果您正苦于以下问题：Python PlotWidget.addLine方法的具体用法？Python PlotWidget.addLine怎么用？Python PlotWidget.addLine使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类pyqtgraph.PlotWidget的用法示例。
在下文中一共展示了PlotWidget.addLine方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: PyQtGraphDataPlot
# 需要导入模块: from pyqtgraph import PlotWidget [as 别名]
# 或者: from pyqtgraph.PlotWidget import addLine [as 别名]
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