1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#!/usr/bin/python
import numpy as np
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore
from utils import FrameCounter
app = pg.mkQApp("Infinite Line Performance")
p = pg.plot()
p.setWindowTitle('pyqtgraph performance: InfiniteLine')
p.setRange(QtCore.QRectF(0, -10, 5000, 20))
p.setLabel('bottom', 'Index', units='B')
curve = p.plot()
# Add a large number of horizontal InfiniteLine to plot
for i in range(100):
line = pg.InfiniteLine(pos=np.random.randint(5000), movable=True)
p.addItem(line)
data = np.random.normal(size=(50, 5000))
ptr = 0
def update():
global ptr
curve.setData(data[ptr % 10])
ptr += 1
framecnt.update()
timer = QtCore.QTimer()
timer.timeout.connect(update)
timer.start(0)
framecnt = FrameCounter()
framecnt.sigFpsUpdate.connect(lambda fps: p.setTitle(f'{fps:.1f} fps'))
if __name__ == '__main__':
pg.exec()
|
