class MainWindow(QMainWindow):
def __init__(self, device):
super(MainWindow, self).__init__()
self.series = QLineSeries()
self.chart = QChart()
self.chart.addSeries(self.series)
self.axisX = QValueAxis()
self.axisX.setRange(0, sampleCount)
self.axisX.setLabelFormat("%g")
self.axisX.setTitleText("Samples")
self.axisY = QValueAxis()
self.axisY.setRange(-1, 1)
self.axisY.setTitleText("Audio level")
self.chart.setAxisX(self.axisX, self.series)
self.chart.setAxisY(self.axisY, self.series)
self.chart.legend().hide()
self.chart.setTitle("Data from the microphone ({})".format(
device.deviceName()))
formatAudio = QAudioFormat()
formatAudio.setSampleRate(8000)
formatAudio.setChannelCount(1)
formatAudio.setSampleSize(8)
formatAudio.setCodec("audio/pcm")
formatAudio.setByteOrder(QAudioFormat.LittleEndian)
formatAudio.setSampleType(QAudioFormat.UnSignedInt)
self.audioInput = QAudioInput(device, formatAudio, self)
self.ioDevice = self.audioInput.start()
self.ioDevice.readyRead.connect(self._readyRead)
self.chartView = QChartView(self.chart)
self.setCentralWidget(self.chartView)
self.buffer = [QPointF(x, 0) for x in range(sampleCount)]
self.series.append(self.buffer)
def closeEvent(self, event):
if self.audioInput is not None:
self.audioInput.stop()
event.accept()
def _readyRead(self):
data = self.ioDevice.readAll()
availableSamples = data.size() // resolution
start = 0
if (availableSamples < sampleCount):
start = sampleCount - availableSamples
for s in range(start):
self.buffer[s].setY(self.buffer[s + availableSamples].y())
dataIndex = 0
for s in range(start, sampleCount):
value = (ord(data[dataIndex]) - 128) / 128
self.buffer[s].setY(value)
dataIndex = dataIndex + resolution
self.series.replace(self.buffer)
def __init__(self, parent, quotes, trades, data_range, currency_name):
QWidget.__init__(self, parent)
self.setMinimumWidth(600)
self.setMinimumHeight(400)
self.quotes_series = QLineSeries()
for point in quotes: # Conversion to 'float' in order not to get 'int' overflow on some platforms
self.quotes_series.append(float(point['timestamp']),
point['quote'])
self.trade_series = QScatterSeries()
for point in trades: # Conversion to 'float' in order not to get 'int' overflow on some platforms
self.trade_series.append(float(point['timestamp']), point['price'])
self.trade_series.setMarkerSize(5)
self.trade_series.setBorderColor(CustomColor.LightRed)
self.trade_series.setBrush(CustomColor.DarkRed)
axisX = QDateTimeAxis()
axisX.setTickCount(11)
axisX.setRange(QDateTime().fromSecsSinceEpoch(data_range[0]),
QDateTime().fromSecsSinceEpoch(data_range[1]))
axisX.setFormat("yyyy/MM/dd")
axisX.setLabelsAngle(-90)
axisX.setTitleText("Date")
axisY = QValueAxis()
axisY.setTickCount(11)
axisY.setRange(data_range[2], data_range[3])
axisY.setTitleText("Price, " + currency_name)
self.chartView = QChartView()
self.chartView.chart().addSeries(self.quotes_series)
self.chartView.chart().addSeries(self.trade_series)
self.chartView.chart().addAxis(axisX, Qt.AlignBottom)
self.chartView.chart().setAxisX(axisX, self.quotes_series)
self.chartView.chart().setAxisX(axisX, self.trade_series)
self.chartView.chart().addAxis(axisY, Qt.AlignLeft)
self.chartView.chart().setAxisY(axisY, self.quotes_series)
self.chartView.chart().setAxisY(axisY, self.trade_series)
self.chartView.chart().legend().hide()
self.chartView.setViewportMargins(0, 0, 0, 0)
self.chartView.chart().layout().setContentsMargins(
0, 0, 0, 0) # To remove extra spacing around chart
self.chartView.chart().setBackgroundRoundness(
0) # To remove corner rounding
self.chartView.chart().setMargins(QMargins(
0, 0, 0, 0)) # Allow chart to fill all space
self.layout = QHBoxLayout(self)
self.layout.setContentsMargins(0, 0, 0,
0) # Remove extra space around layout
self.layout.addWidget(self.chartView)
self.setLayout(self.layout)
def __init__(self):
QMainWindow.__init__(self)
low = QBarSet("Min")
high = QBarSet("Max")
low.append([-52, -50, -45.3, -37.0, -25.6, -8.0,
-6.0, -11.8, -19.7, -32.8, -43.0, -48.0])
high.append([11.9, 12.8, 18.5, 26.5, 32.0, 34.8,
38.2, 34.8, 29.8, 20.4, 15.1, 11.8])
series = QStackedBarSeries()
series.append(low)
series.append(high)
chart = QChart()
chart.addSeries(series)
chart.setTitle("Temperature records in celcius")
chart.setAnimationOptions(QChart.SeriesAnimations)
categories = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
"Aug", "Sep", "Oct", "Nov", "Dec"]
axisX = QBarCategoryAxis()
axisX.append(categories)
axisX.setTitleText("Month")
chart.addAxis(axisX, Qt.AlignBottom)
axisY = QValueAxis()
axisY.setRange(-52, 52)
axisY.setTitleText("Temperature [°C]")
chart.addAxis(axisY, Qt.AlignLeft)
series.attachAxis(axisX)
series.attachAxis(axisY)
chart.legend().setVisible(True)
chart.legend().setAlignment(Qt.AlignBottom)
chart_view = QChartView(chart)
chart_view.setRenderHint(QPainter.Antialiasing)
self.setCentralWidget(chart_view)
class TestChart(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.series = QLineSeries()
self.series.append([
QPointF(1.0, 1.0),
QPointF(2.0, 73.0),
QPointF(3.0, 268.0),
QPointF(4.0, 17.0),
QPointF(5.0, 4325.0),
QPointF(6.0, 723.0)
])
self.chart = QChart()
self.chart.addSeries(self.series)
self.chart.legend().hide()
self.chart.setTitle("Logarithmic axis example")
self.axisX = QValueAxis()
self.axisX.setTitleText("Data point")
self.axisX.setLabelFormat("%i")
self.axisX.setTickCount(self.series.count())
self.chart.addAxis(self.axisX, Qt.AlignBottom)
self.series.attachAxis(self.axisX)
self.axisY = QLogValueAxis()
self.axisY.setTitleText("Values")
self.axisY.setLabelFormat("%g")
self.axisY.setBase(8.0)
self.axisY.setMinorTickCount(-1)
self.chart.addAxis(self.axisY, Qt.AlignLeft)
self.series.attachAxis(self.axisY)
self.chartView = QChartView(self.chart)
self.chartView.setRenderHint(QPainter.Antialiasing)
self.setCentralWidget(self.chartView)