PyQt5+QtChart绘制散点图
PyQt5 QtChart-散点图
QScatterSeries类将数据以散点图显示
import sys import random from PyQt5.QtGui import * from PyQt5.QtCore import * from PyQt5.QtWidgets import * from PyQt5.QtCore import Qt from PyQt5.QtChart import jsQScatterSeries, QChart, QChartView, QPolarChart class MyScatterWindow(QWidget): def __init__(self, parent=None): super(MyScatterWindow, self).__init__(parent) self.resize(800, 600) chart = QChart() chartView = QChartView() print(PYQT_VERSION_STR) scatter = QScatterSeries() for value in range(1, 500): scatter.append(value, random.random()*10) #scatter.append(QPointF(value, random.random()*10)) scatter.setName("散点图") scatter.setMarkerSize(8) # 标记大小 # scatter.setMarkerShape(QScatterSeries.MarkerShapeRectangle) #方形标记 scatter.setMarkerShape(QScatterSeries.MarkerShapeCircle) # 圆形标记 pen = QPen() pen.setColor(Qt.red) pen.setWidth(2) scatter.setPen(penjavascript) chart.addSeries(scatter) chart.createDefaultAxes() chartView.setChart(chart) vbox = QVBoxLayout() vbox.addwidget(chartView) self.setLayout(vbox) if __name__ == "__main__": app = QApplication(sys.argv) win = MyScatterWindow() win.show() sys.exit(app.exec_())
效果图
补充
除了散点图,PytQt5和QtChart还可以绘制其他的图表。下面是小编为大家整理的其他图表绘制的示例代码,需要的可以参考一下
PyQt5 QtChart-饼状图
QPieSeries类将数据以饼状图显示
import sys from PyQt5.QtGui import * from PyQt5.QtCore import * from PyQt5.QtWidgets import * from PyQt5.QtCore import Qt from PyQt5.QtChart import QPieSeries, QPieLegen开发者_开发入门dMarker, QChart, QChartView class MyPieWindow(QWidget): def __init__(self, parent=None): super(MyPieWindow, self).__init__(parent) chart = QChart() chartView = QChartView() pieSeries = QPieSeries() slice0 = pieSeries.append("铁:%10", 1) pieSeries.append("铝:%20", 2) pieSeries.append("铜:%70", 7) pieSeries.setLabelsVisible() pieSeries.setPieSize(0.6) slice0.setExploded() # 外伸 slice0.setColor(QColor(255, 0, 150)) chart.setTitle("饼状图") chart.addSeries(pieSeries) chartView.setChart(chart) chartView.setRenderHint(QPainter.Antialiasing) vbox = QVBoxLayout() vbox.addWidget(chartView) self.setLayout(vbox) if __name__ == "__main__": app = QApplication(sys.argv) win = MyPieWindow() win.show() sys.exit(app.exec_())
PyQt5 QtChart-QLihttp://www.devze.comneSeries 折线图
QLineSeries
QLineSeries类将数据序列显示为折线图,其核心代码:
lineSeries = QLineSeries()
lineSeries.append(1, 3)lineSeries.append(5, 8)…chart.addSeries(lineSeries)
常用方法:
- setPointsVisible(True) :设置数据点显示状态
- setPointLabelsVisible(True):设置数据点标签显示状态
- setPointLabelsFormat(“(@xPoint, @yPoint)”):设置数据点标签格式
- setPointLabelsFont(QFont(None, 8)) :设置数据点标签字体
- setPointLabelsColor(QColorwww.devze.com(255, 0,0)) :设置数据点标签颜色
import sys from PyQt5.QtGui import * from PyQt5.QtCore import * from PyQt5.QtWidgets import * from PyQt5.QtChart import * import random class MyWaveWindow(QWidget): def __init__(self, parent=None): super(MyWaveWindow, self).__init__(parent) self.setWindowTitle("折线图") # 创建图表 并设置相关参数 chart = QChart() chart.setTitle("随机折线图") chart.setAnimationOptions(QChart.SeriesAnimations) chart.setAnimationDuration(1000) chart.setAnimationEasingCurve(QEasingCurve.InOutCirc) # chart.setTheme(QChart.ChartThemeBlueCerulean) chart.legend().show() # 创建折线数据序列 lineSeries = QLineSeries() for value in range(0, 100): lineSeries.append(value, round(random.randopythonm()*10, 2)) lineSeries.setPointsVisible(True) lineSeries.setPointLabelsVisible(True) lineSeries.setPointLabelsFormat("(@xPoint, @yPoint)") lineSeries.setPointLabelsFont(QFont(None, 8)) lineSeries.setPointLabelsColor(QColor(255, 0, 0)) chart.addSeries(lineSeries) # 创建轴坐标 # chart.createDefaultAxes() # 创建默认轴 axis_x = QValueAxis() axis_x.setLabelFormat("%d") axis_x.setMinorTickCount(3) axis_x.setRange(0, 100) chart.addAxis(axis_x, Qt.AlignBottom) lineSeries.attachAxis(axis_x) axis_y = QValueAxis() axis_y.setLabelFormat("%d") # axis_y.setTickType(QValueAxis.TicksDynamic) axis_y.setTickCount(20) axis_y.setMinorTickCount(3) axis_y.setRange(0, 10) chart.addAxis(axis_y, Qt.AlignLeft) lineSeries.attachAxis(axis_y) chartView = QChartView(chart) chartView.setRenderHint(QPainter.Antialiasing) layout = QVBoxLayout() layout.addWidget(chartView) self.setLayout(layout) self.resize(800, 600) if __name__ == "__main__": app = QApplication(sys.argv) win = MyWaveWindow() win.show() app.exit(app.exec_())
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