def main(): maxlen = 500 data_x = RingBuffer(maxlen, datetime.datetime.utcnow(), dtype=datetime.datetime) data_y = RingBuffer(maxlen) y = 100 # initial value fig, ax = plt.subplots() line, = ax.plot(data_x.all[::-1], data_y.all[::-1], linestyle='-', marker='+', color='r', markeredgecolor='b') delta_y = 20 ax.set_ylim([y - delta_y, y + delta_y]) while True: x = datetime.datetime.utcnow() y = y + np.random.uniform(-1, 1) data_x.append(x) data_y.append(y) line.set_xdata(data_x.all[::-1]) xmin, xmax = data_x.min(), data_x.max() if xmax > xmin: ax.set_xlim([xmin, xmax]) line.set_ydata(data_y.all[::-1]) ymin, ymax = data_y.min(), data_y.max() if ymax > ymin: ax.set_ylim([ymin, ymax]) plt.pause(0.001)
class RandomWalkPlot: def __init__(self, win): #self.plot = pg.plot() self.plot = win.addPlot(title="Updating plot") self.ptr = 0 #pen = 'r' pen = pg.mkPen('b', style=QtCore.Qt.SolidLine) self.curve = self.plot.plot(pen=pen, symbol='+') self.timer = QtCore.QTimer() self.timer.timeout.connect(self.update) self.timer.start(50) self.value = 1000 # initial value N = 100 # number of elements into circular buffer self.data_y = RingBuffer(N, self.value) def update(self): self.value += np.random.uniform(-1, 1) self.data_y.append(self.value) self.curve.setData(y=self.data_y) # size is increasing up to N
def test_min_max(): N = 5 ring = RingBuffer(size_max=N, default_value=-1) ring.append(2) ring.append(1) ring.append(4) ring.append(3) assert ring.min() == 1 assert ring.min(all=True) == -1 assert ring.max() == 4
def test_ring(): N = 10 def print_overflow(*args, **kwargs): print("OVERFLOW of %s" % args[0]) #raise NotImplementedError ring = RingBuffer(size_max=N, default_value=0.0, dtype=float, overflow=print_overflow) for i in range(1, N + 5): ring.append(i) assert ring[0] == i if i < N: assert not ring.full else: assert ring.full assert isinstance(ring.all, np.ndarray) assert isinstance(ring.partial, np.ndarray)
def main(): maxlen = 50 #data_x = RingBuffer(maxlen) data_y = RingBuffer(maxlen) y = 100 # initial value fig, ax = plt.subplots() line, = ax.plot(data_y.all[::-1]) delta_y = 20 ax.set_ylim([y - delta_y, y + delta_y]) while True: y = y + np.random.uniform(-1, 1) data_y.append(y) line.set_ydata(data_y.all[::-1]) plt.pause(0.001)
def main(device, baudrate): logging.basicConfig(level=logging.INFO) sensors00 = SensorsArduino(device=device, baudrate=baudrate, adc_channels_number=2) print("capabilities: %s" % sensors00.capabilities) sensors00.connect() sensors00.ADC[0].calibrate(lambda value: linear_function_with_limit(value, 520.0, 603.0, 0.0, 100.0)) maxlen = 100 data_x = RingBuffer(maxlen, datetime.datetime.utcnow(), dtype=datetime.datetime) data_y = RingBuffer(maxlen) y = 100 # initial value fig, ax = plt.subplots() line, = ax.plot(data_x.all[::-1], data_y.all[::-1], linestyle='-', marker='+', color='r', markeredgecolor='b') #ax.set_ylim([0, 1023]) ax.set_ylim([0, 100]) t_last = datetime.datetime.utcnow() while True: t = datetime.datetime.utcnow() try: if sensors00.update() and sensors00.ADC[0].has_new_data: print(sensors00._bin_msg._data) y = sensors00.ADC[0].value #y = limit(y, 1800.0, 24000.0, 0.0, 100.0) logger.info("%s %s %s" % (t, y, t - t_last)) data_x.append(t) data_y.append(y) line.set_xdata(data_x.all[::-1]) xmin, xmax = data_x.min(), data_x.max() if xmax > xmin: ax.set_xlim([xmin, xmax]) line.set_ydata(data_y.all[::-1]) #ymin, ymax = data_y.min(), data_y.max() #if ymax > ymin: # ax.set_ylim([ymin, ymax]) plt.pause(0.001) except Exception as e: logger.error(traceback.format_exc()) #raise e t_last = t
class MyApplication(QtGui.QApplication): def __init__(self, *args, **kwargs): super(MyApplication, self).__init__(*args, **kwargs) #self.t = QTime() #self.t.start() maxlen = 50 self.data_x = RingBuffer(maxlen) self.data_y = RingBuffer(maxlen) self.win = pg.GraphicsWindow(title="Basic plotting examples") self.win.resize(1000, 600) self.win.setWindowTitle('Plot with PyQtGraph') self.plot = self.win.addPlot(title='Timed data') #self.plot.setYRange(0, 150) #self.curve = self.plot.plot() pen = pg.mkPen('r', style=QtCore.Qt.SolidLine) self.curve = self.plot.plot(pen=pen, symbol='+') self.timer = QTimer() self.timer.timeout.connect(self.update) self.timer.start(100) self.y = 100 def update(self): #self.data.append({'x': self.t.elapsed(), 'y': np.random.randint(0, 100)}) x = now_timestamp() self.y = self.y + np.random.uniform(-1, 1) self.data_x.append(x) self.data_y.append(self.y) #self.curve.setData(x=self.data_x, y=self.data_y) self.curve.setData(y=self.data_y)
class MyApplication(QtGui.QApplication): def __init__(self, *args, **kwargs): super(MyApplication, self).__init__(*args, **kwargs) #self.t = QTime() #self.t.start() maxlen = 50 self.data_x = RingBuffer(maxlen) self.data_y = RingBuffer(maxlen) self.win = pg.GraphicsWindow(title="Basic plotting examples") self.win.resize(1000, 600) self.win.setWindowTitle('Plot with PyQtGraph') self.plot = self.win.addPlot(title='Timed data', axisItems={'bottom': TimeAxisItem(orientation='bottom')}) #self.plot.setYRange(0, 150) #self.curve = self.plot.plot() pen = pg.mkPen('r', style=QtCore.Qt.SolidLine) self.curve = self.plot.plot(pen=pen, symbol='+') self.timer = QTimer() self.timer.timeout.connect(self.update) self.timer.start(100) self.y = 100 def update(self): #self.data.append({'x': self.t.elapsed(), 'y': np.random.randint(0, 100)}) x = now_timestamp() self.y = self.y + np.random.uniform(-1, 1) self.data_x.append(x) self.data_y.append(self.y) self.curve.setData(x=self.data_x, y=self.data_y)