class DynamicSpline(QChart):
def __init__(self):
super().__init__()
self.m_step = 0
self.m_x = 2
self.m_y = 1
# Инициализировать изображение
self.series = QSplineSeries(self)
red_pen = QPen(Qt.red)
red_pen.setWidth(2)
self.series.setPen(red_pen)
self.axisX = QValueAxis()
self.axisY = QValueAxis()
self.series.append(self.m_x, self.m_y)
self.addSeries(self.series)
self.addAxis(self.axisX, Qt.AlignBottom)
self.addAxis(self.axisY, Qt.AlignLeft)
self.series.attachAxis(self.axisX)
self.series.attachAxis(self.axisY)
self.axisX.setTickCount(5)
self.axisX.setRange(0, 10)
self.axisY.setRange(0, 100)
self.timer = QTimer(self)
self.timer.setInterval(1000)
self.timer.timeout.connect(self.handleTimeout)
self.timer.start()
def handleTimeout(self):
x = self.plotArea().width() / self.axisX.tickCount()
y = (self.axisX.max() - self.axisX.min()) / self.axisX.tickCount()
self.m_x += y
# В PyQt 5.11.3 и выше, QRandomGenerator.global() был переименован в global_()
try:
self.m_y=db_wrk()
except :
self.m_y = QRandomGenerator.global_().bounded(50)
self.series.append(self.m_x, self.m_y)
self.scroll(x, 0)
if self.m_x >= 10:
self.timer.stop()
def db_wrk():
return m_y
class Chart(QChart):
def __init__(self):
super(QChart, self).__init__()
self.m_timer = QTimer()
self.m_series = None
self.m_titles = []
self.m_axis = QValueAxis()
self.m_step = None
self.m_x = 5
self.m_y = 1
random.seed(QTime.currentTime().msec())
self.m_timer.timeout.connect(self.handleTimeout)
self.m_timer.setInterval(1000)
self.m_series = QSplineSeries(self)
green = QPen(Qt.green)
green.setWidth(3)
self.m_series.setPen(green)
self.m_series.append(self.m_x, self.m_y)
self.addSeries(self.m_series)
self.createDefaultAxes()
self.setAxisX(self.m_axis, self.m_series)
self.m_axis.setTickCount(5)
self.axisX().setRange(0, 10)
self.axisY().setRange(-5, 10)
self.m_timer.start()
@pyqtSlot()
def handleTimeout(self):
x = self.plotArea().width() / self.m_axis.tickCount()
y = (self.m_axis.max() - self.m_axis.min()) / self.m_axis.tickCount()
self.m_x += y
self.m_y = random.randint(0, 5) - 2.5
self.m_series.append(self.m_x, self.m_y)
self.scroll(x, 0)
if self.m_x is 100:
self.m_timer.stop()
class DynamicSpline(QChart):
def __init__(self):
super().__init__()
self.m_step = 0
self.m_x = 5
self.m_y = 1
# 初始化图像
self.series = QSplineSeries(self)
green_pen = QPen(Qt.red)
green_pen.setWidth(3)
self.series.setPen(green_pen)
self.axisX = QValueAxis()
self.axisY = QValueAxis()
self.series.append(self.m_x, self.m_y)
self.addSeries(self.series)
self.addAxis(self.axisX, Qt.AlignBottom)
self.addAxis(self.axisY, Qt.AlignLeft)
self.series.attachAxis(self.axisX)
self.series.attachAxis(self.axisY)
self.axisX.setTickCount(5)
self.axisX.setRange(0, 10)
self.axisY.setRange(-5, 10)
self.timer = QTimer(self)
self.timer.setInterval(1000)
self.timer.timeout.connect(self.handleTimeout)
self.timer.start()
def handleTimeout(self):
x = self.plotArea().width() / self.axisX.tickCount()
y = (self.axisX.max() - self.axisX.min()) / self.axisX.tickCount()
self.m_x += y
# 在PyQt5.11.3及以上版本中，QRandomGenerator.global()被重命名为global_()
self.m_y = QRandomGenerator.global_().bounded(5) - 2.5
self.series.append(self.m_x, self.m_y)
self.scroll(x, 0)
if self.m_x >= 100:
self.timer.stop()
