def getSeries(self):
# 创建Series
series0 = QLineSeries(self)
series1 = QLineSeries(self)
# 添加数据
series0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(9, 7) \
<< QPointF(12, 6) << QPointF(16, 7) << QPointF(18, 5)
series1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(8, 2) \
<< QPointF(12, 3) << QPointF(16, 4) << QPointF(18, 3)
# 创建区域图
series = QAreaSeries(series0, series1)
series.setName('Batman')
# 画笔
pen = QPen(0x059605)
pen.setWidth(3)
series.setPen(pen)
# 设置画刷
gradient = QLinearGradient(QPointF(0, 0), QPointF(0, 1))
gradient.setColorAt(0.0, QColor(0x3cc63c))
gradient.setColorAt(1.0, QColor(0x26f626))
gradient.setCoordinateMode(QGradient.ObjectBoundingMode)
series.setBrush(gradient)
return series
def main():
import sys
app = QApplication(sys.argv)
series0 = QLineSeries()
series1 = QLineSeries()
series0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(
9, 7) << QPointF(12, 6) << QPointF(16, 7) << QPointF(18, 5)
series1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(
8, 2) << QPointF(12, 3) << QPointF(16, 4) << QPointF(18, 3)
series = QAreaSeries(series0, series1)
series.setName("Batman")
pen = QPen(0x059605)
pen.setWidth(3)
series.setPen(pen)
gradient = QLinearGradient(QPointF(0, 0), QPointF(0, 1))
gradient.setColorAt(0.0, QColor(0x3CC63C))
gradient.setColorAt(1.0, QColor(0x26F626))
gradient.setCoordinateMode(QGradient.ObjectBoundingMode)
series.setBrush(gradient)
chart = QChart()
chart.addSeries(series)
chart.setTitle("Simple areachart example")
chart.createDefaultAxes()
chart.axes(Qt.Horizontal)[0].setRange(0, 20)
chart.axes(Qt.Vertical)[0].setRange(0, 10)
chartView = QChartView(chart)
chartView.setRenderHint(QPainter.Antialiasing)
window = QMainWindow()
window.setCentralWidget(chartView)
window.resize(400, 300)
window.show()
sys.exit(app.exec_())
def do_redrawFill(self):
self.chart.removeAllSeries() #删除所有序列
pen=QPen(self.__colorLine) #线条颜色
pen.setWidth(2)
seriesFullWave = QLineSeries() #全波形
seriesFullWave.setUseOpenGL(True)
seriesFullWave.setPen(pen)
seriesPositive = QLineSeries() #正半部分曲线
seriesPositive.setUseOpenGL(True)
seriesPositive.setVisible(False) #不显示
seriesNegative = QLineSeries() #负半部分曲线
seriesNegative.setUseOpenGL(True)
seriesNegative.setVisible(False) #不显示即可
seriesZero = QLineSeries() #零均值线
seriesZero.setUseOpenGL(True)
seriesZero.setVisible(False) #不显示即可
## 填充数据
vx=0
intv=0.001 #1000Hz采样，数据点间隔时间
pointCount=len(self.__vectData)
for i in range(pointCount):
value=self.__vectData[i]
seriesFullWave.append(vx,value) #完整波形
seriesZero.append(vx,0) #零值线
if value>0:
seriesPositive.append(vx,value) #正半部分波形
seriesNegative.append(vx,0)
else:
seriesPositive.append(vx,0)
seriesNegative.append(vx,value) #负半部分波形
vx =vx+intv
self.__axisX.setRange(0,vx)
## 创建QAreaSeries序列，设置上、下界的QLineSeries对象
pen.setStyle(Qt.NoPen) #无线条,隐藏填充区域的边线
if self.ui.radioFill_Pos.isChecked(): #positive fill
series = QAreaSeries(seriesPositive, seriesZero) #QAreaSeries
series.setColor(self.__colorFill) #填充色
series.setPen(pen) #不显示线条
self.chart.addSeries(series)
series.attachAxis(self.__axisX)
series.attachAxis(self.__axisY)
elif self.ui.radioFill_Neg.isChecked(): #negative fill
series = QAreaSeries(seriesZero,seriesNegative)
series.setColor(self.__colorFill)
series.setPen(pen) #不显示线条
self.chart.addSeries(series)
series.attachAxis(self.__axisX)
series.attachAxis(self.__axisY)
elif self.ui.radioFill_Both.isChecked(): #both fill
series = QAreaSeries(seriesZero,seriesFullWave)
series.setColor(self.__colorFill)
series.setPen(pen) #不显示线条
self.chart.addSeries(series)
series.attachAxis(self.__axisX)
series.attachAxis(self.__axisY)
series.clicked.connect(self.do_area_clicked) #关联槽函数
## 构建QAreaSeries的两个QLineSeries序列必须添加到chart里，否则程序崩溃
self.chart.addSeries(seriesZero) #隐藏
self.chart.addSeries(seriesPositive) #隐藏
self.chart.addSeries(seriesNegative) #隐藏
self.chart.addSeries(seriesFullWave) #全波形曲线，显示
seriesPositive.attachAxis(self.__axisX)
seriesPositive.attachAxis(self.__axisY)
seriesNegative.attachAxis(self.__axisX)
seriesNegative.attachAxis(self.__axisY)
seriesZero.attachAxis(self.__axisX)
seriesZero.attachAxis(self.__axisY)
seriesFullWave.attachAxis(self.__axisX)
seriesFullWave.attachAxis(self.__axisY)