线和条形图示例

示例显示了如何组合不同的图表并设置坐标轴。

在本例中，我们组合了折线图和条形图，并使用类别轴作为两者的共同坐标轴。

下载 此示例

lineandbar.py

# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

"""PySide6 port of the line/bar example from Qt v5.x"""

import sys
from PySide6.QtCore import QPoint, Qt
from PySide6.QtGui import QPainter
from PySide6.QtWidgets import QMainWindow, QApplication
from PySide6.QtCharts import (QBarCategoryAxis, QBarSeries, QBarSet, QChart,
                              QChartView, QLineSeries, QValueAxis)


class TestChart(QMainWindow):
    def __init__(self):
        super().__init__()

        self.set0 = QBarSet("Jane")
        self.set1 = QBarSet("John")
        self.set2 = QBarSet("Axel")
        self.set3 = QBarSet("Mary")
        self.set4 = QBarSet("Sam")

        self.set0.append([1, 2, 3, 4, 5, 6])
        self.set1.append([5, 0, 0, 4, 0, 7])
        self.set2.append([3, 5, 8, 13, 8, 5])
        self.set3.append([5, 6, 7, 3, 4, 5])
        self.set4.append([9, 7, 5, 3, 1, 2])

        self._bar_series = QBarSeries()
        self._bar_series.append(self.set0)
        self._bar_series.append(self.set1)
        self._bar_series.append(self.set2)
        self._bar_series.append(self.set3)
        self._bar_series.append(self.set4)

        self._line_series = QLineSeries()
        self._line_series.setName("trend")
        self._line_series.append(QPoint(0, 4))
        self._line_series.append(QPoint(1, 15))
        self._line_series.append(QPoint(2, 20))
        self._line_series.append(QPoint(3, 4))
        self._line_series.append(QPoint(4, 12))
        self._line_series.append(QPoint(5, 17))

        self.chart = QChart()
        self.chart.addSeries(self._bar_series)
        self.chart.addSeries(self._line_series)
        self.chart.setTitle("Line and barchart example")

        self.categories = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
        self._axis_x = QBarCategoryAxis()
        self._axis_x.append(self.categories)
        self.chart.addAxis(self._axis_x, Qt.AlignBottom)
        self._line_series.attachAxis(self._axis_x)
        self._bar_series.attachAxis(self._axis_x)
        self._axis_x.setRange("Jan", "Jun")

        self._axis_y = QValueAxis()
        self.chart.addAxis(self._axis_x, Qt.AlignLeft)
        self._line_series.attachAxis(self._axis_y)
        self._bar_series.attachAxis(self._axis_y)
        self._axis_y.setRange(0, 20)

        self.chart.legend().setVisible(True)
        self.chart.legend().setAlignment(Qt.AlignBottom)

        self._chart_view = QChartView(self.chart)
        self._chart_view.setRenderHint(QPainter.Antialiasing)

        self.setCentralWidget(self._chart_view)


if __name__ == "__main__":
    app = QApplication(sys.argv)

    window = TestChart()
    window.show()
    window.resize(440, 300)

    sys.exit(app.exec())