-
Notifications
You must be signed in to change notification settings - Fork 1
/
PyQtChart.py
131 lines (106 loc) · 3.92 KB
/
PyQtChart.py
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
from PyQt5.QtChart import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sqlite3
import sys
def change(str):
time = QDateTime.fromString(str, "yyyy-MM-dd hh:mm:ss")
time.setOffsetFromUtc(8)
return time.toLocalTime().toMSecsSinceEpoch()
class Chart(QChart):
limit = 30
database = '/home/pi/github/DHT22_raspberry/weather.db'
offset = 0.15
def __init__(self):
super().__init__()
conn = sqlite3.connect(Chart.database)
cursor = conn.cursor()
cursor.execute('select * from weather order by id desc limit ?', [Chart.limit])
data = cursor.fetchall()
data.reverse()
conn.commit()
cursor.close()
conn.close()
#self.setAnimationOptions(QChart.AllAnimations)
#chart.legend().hide()
#chart.setTitle('Test')
self.hmin = 100
self.hmax = 0
self.tmin = 100
self.tmax = 0
axisX = QDateTimeAxis()
axisX.setFormat("hh:mm:ss")
self.addAxis(axisX, Qt.AlignBottom)
self.temperature = QSplineSeries()
#self.temperature = QLineSeries()
self.temperature.setUseOpenGL()
self.temperature.setName("Temperature")
for row in data:
print(row[1], row[3])
self.tmin = min(self.tmin, row[3])
self.tmax = max(self.tmax, row[3])
self.temperature.append(QPointF(change(row[1]), row[3]))
self.addSeries(self.temperature)
self.axisL = QValueAxis()
self.addAxis(self.axisL, Qt.AlignLeft)
self.temperature.attachAxis(axisX)
self.temperature.attachAxis(self.axisL)
self.humidity = QSplineSeries()
#self.humidity = QLineSeries()
self.humidity.setUseOpenGL()
self.humidity.setName("Humidity")
for row in data:
print(row[1], row[2])
self.hmin = min(self.hmin, row[2])
self.hmax = max(self.hmax, row[2])
self.humidity.append(QPointF(change(row[1]), row[2]))
self.addSeries(self.humidity)
self.axisR = QValueAxis()
self.addAxis(self.axisR, Qt.AlignRight)
self.humidity.attachAxis(axisX)
self.humidity.attachAxis(self.axisR)
self.updateRange()
self.timer = QTimer(self)
self.timer.timeout.connect(self.update)
self.timer.start(10000)
def update(self):
x = self.plotArea().width() / Chart.limit
print(self.plotArea().width(), Chart.limit)
print('Tick')
conn = sqlite3.connect(Chart.database)
cursor = conn.cursor()
cursor.execute('select * from weather order by id desc limit 1')
data = cursor.fetchall()
self.humidity.append(QPointF(change(data[0][1]), data[0][2]))
self.hmin = min(self.hmin, data[0][2])
self.hmax = max(self.hmax, data[0][2])
print(data[0][1], data[0][2])
self.temperature.append(QPointF(change(data[0][1]), data[0][3]))
self.tmin = min(self.tmin, data[0][3])
self.tmax = max(self.tmax, data[0][3])
print(data[0][1], data[0][3])
conn.commit()
cursor.close()
conn.close()
self.updateRange()
self.scroll(x, 0)
def updateRange(self):
hlength = self.hmax - self.hmin
tlength = self.tmax - self.tmin
hoffset = Chart.offset * hlength
toffset = Chart.offset * tlength
self.axisR.setRange(self.hmin - hoffset, self.hmax + hoffset)
self.axisL.setRange(self.tmin - toffset, self.tmax + toffset)
if __name__ == '__main__':
app = QApplication(sys.argv)
chart = Chart()
chartView = QChartView(chart)
chartView.setRenderHint(QPainter.Antialiasing)
window = QMainWindow()
window.setCentralWidget(chartView)
window.setWindowTitle('Temperature and Humidity')
window.resize(800, 600)
window.showFullScreen()
#window.show()
sys.exit(app.exec_())