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)
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 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 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 __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 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)